2003 Chevrolet Trailblazer Alternators and Starters

Name: A/C Control Relay
Brand: ACDelco
SKU: R1142578446ACD
Price: 18.50 USD

Below you will find various in-demand Chevrolet Alternators and Starters, components and accessories for your 2003 Trailblazer. Advance Auto Parts has popular Trailblazer parts like Alternator Parts, Starter Parts, Ignition Lock Parts and more. You’ll also find aftermarket and OEM Alternators and Starters for other Trailblazer model years including 2002, 2004, 2005, 2006, 2007, 2008, 2009, 2022, 2023 and more. Select a category of 2003 Chevrolet Trailblazer Alternators and Starters below and start saving instantly.

Popular 2003 Chevrolet Trailblazer Alternators and Starters Categories

Alternators

Starters

Ignition Lock Cylinders

Starter Relays

Alternator Pigtails

Essential Alternators and Starters for 2003 Chevrolet Trailblazers

from

$18.50

A/C Control Relay

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$463.61

ACDelco GM OE Light Duty Alternators components are newly manufactured and are a GM recommended replacement for your vehicle’s original alternator. Alternators provide power to the vehicle’s electrical systems and charges the battery while the engine is running. These original alternators are engineered to fit your specific GM vehicle and will provide the same performance, durability, and service life you expect from General Motors.

Product Features:

100% newly manufactured as an exact replacement for your GM vehicle’s original alternator
Components are tested to meet original specification requirements, for remarkable durability
GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function

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$156.99

Carquest Premium alternators are premium constructed, original equipment (O.E.) replacement parts with industry-leading warranties. Our Carquest Premium alternators are designed to meet or exceed OE specifications for fit, form and function. Our alternators are remanufactured by an IATF/TS 16949 certified supplier that meets the highest standards achievable. We replace all wear components (brushes, bushings and bearings) with new components to ensure long-life. All critical components are electronically tested during assembly and the entire unit is 100% tested, ensuring proper performance backed by an industry-leading warranty. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.

Product Features:

Each unit is triple-tested to ensure quality and performance
All wear components (brushes, bushings, and bearings) are replaced with all NEW components in the remanufacturing process
Tech Hotline with trained ASE Certified Technicians: Call Carquest Technical Support at 1-800-228-9672

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$249.99

Carquest Professional alternators are 100% new units that are built to meet or exceed original equipment (O.E.) specifications. Our new alternators are engineered and built by an IATF/TS 16949 certified supplier that meets the highest standards achievable. Carquest Professional alternators are re-engineered to include improvements and enhancements (where applicable) to the OE design to extend longevity and service life. Our new alternators are built with all new components and are 100% triple tested to ensure high quality that is backed by an industry-leading warranty. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.

Product Features:

Designed to meet or exceed OE specifications for fit, form and function
Manufactured by an IATF/TS 16949 supplier that meets or exceeds the highest standards in the industry
All new components are utilized to ensure long service life
Housings are 100% new with dimensions computer gauged and measured to ensure proper fitment
Internal electronics are upgraded for heavy duty reliability (where applicable)
Regulators and rectifiers are 100% electronically load tested for reliable charging performance
Application-specific technical bulletins included where applicable
All units are 100% triple tested to ensure quality and performance
Technical support team staffed with ASE Certified Technicians: 1-800-228-9672
Rotors and stators are load tested and double insulated for maximum charging performance

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$163.69

Alternator

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$501.99

GM Genuine Parts Remanufactured Alternators are designed, engineered, and tested to rigorous standards, and are backed by General Motors. Remanufacturing alternators is an industry standard practice that involves disassembly of existing units, and replacing components that are most prone to wear with new components. Damaged and obsolete parts are replaced and are end of line tested to ensure they perform to GM specifications. In addition, remanufacturing returns components back into service rather than processing as scrap or simply disposing of them. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

Product Features:

Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional
Remanufacturing is an industry standard practice that returns parts into service rather than scrapping them
Tested to ensure they perform to GM specifications

from

$167.99

Carquest Standard alternators are designed and built to meet original equipment (O.E.) specifications, while providing great value. Our alternators are remanufactured by an IATF/TS 16949 certified supplier that meets the highest standards achievable. All of our Carquest Standard alternators are inspected and 100% tested to ensure they are built to meet OEM fit, form and function. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.

Product Features:

Designed to meet OE specifications for fit, form and function
Remanufactured by an IATF/TS 16949 supplier that meets or exceeds the highest standards in the industry
Application-specific technical bulletins included where applicable
All units are 100% triple tested to ensure quality and performance
Technical support team staffed with ASE Certified Technicians: 1-800-228-9672

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$135.99

Steering column jammed or ignition switch not working? This ignition lock housing is a direct replacement for an inoperable original equipment lock housing to help restore ignition lock functions.

Product Features:

Direct replacement – this ignition lock housing matches the fit and function of the original equipment lock housing.
Durable materials – this lock housing is made from quality materials for reliable service.
Easy to install – no special tools required to install this lock housing
Quality tested – this part has undergone vehicle try-on and material testing

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$53.99

CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

Product Features:

Computer-Aided Design (CAD), laser scanning and 3D printing ┐ utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) ┐ in the connector terminal design process ensures speed-to-market and a precise connector fit guaranteed.
Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
100% end-of-line tested to ensure confidence and product reliability, every time.

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$142.99

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$61.99

This ignition lock cylinder is designed to match the fit, function and performance of the original equipment part on specified vehicles. It is engineered to help restore ignition lock function when an original cylinder is broken or worn out.

Product Features:

Direct replacement – this ignition lock cylinder matches the fit and function of the original equipment assembly on certain vehicle years, makes and models.
Ideal solution – engineered to help restore and ensure the functionality of the lock cylinder.
Durable construction – designed and manufactured to strict specifications for reliable performance
Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience

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$54.99

High-quality products that meet OE appearance and performance to provide professional technicians and DIYers with a cost-effective solution.

Product Features:

Designed to OE standards for ease of installation
Professional quality construction using solid brass tumblers, chrome plated brass keys, die-cast zinc lock cores and multiple, randomly assigned key codes ensures superior operation
Decades of industry leading research and development focused on meeting the technician’s needs
With industry leading expertise, when original equipment fails our products are designed to fix the inherent failure issues
BWD is a global manufacturer of original equipment ignition products, complete quality control is maintained through the manufacturing process from componentry to finished product

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$42.99

This alternator connector is designed to match the appearance and function of the original hardware on specified applications. Made of quality materials, it is engineered for reliable performance and durability.

Product Features:

Direct replacement – this alternator connector matches the appearance and function of the factory hardware on specified applications.
Ideal solution – this connector is a reliable replacement for an original part that is missing or has failed due to fatigue
Durable construction – this part is made from quality materials to ensure reliable performance and long service life
Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience

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$40.99

ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Product Features:

Protective outer coverings help provide long-lasting durability
Color-coded wires allow for easy installation
GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function

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$43.99

Premium quality materials for longer service life
Sealed connections (where applicable) to prevent environmental corrosion and performance issues
Global coverage for import and/or domestic applications
OE specified wire gauge to ensure a reliable electrical connection
Designed to meet or exceed OE specifications in form, fit and function

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$37.99

Premium quality materials for longer service life
Sealed connections (where applicable) to prevent environmental corrosion and performance issues
Global coverage for import and/or domestic applications
OE specified wire gauge to ensure a reliable electrical connection
Designed to meet or exceed OE specifications in form, fit and function

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$379.37

ACDelco Professional, premium NEW Starters are manufactured with all new components and are the ideal high quality replacement for many vehicles on the road today. Key components are greased and lubricated to help ensure improved performance and long life reliability even in the toughest conditions. Starters have 100% new solenoids, computer tested for contact life, coil balance, and pull strength, and 100% new drive gears/clutches, assembled under tight specifications using machine tolerances that are torque tested. These Professional, premium aftermarket NEW starters are manufactured to meet or exceed your expectations for fit, form, and function.

Product Features:

NEW units are manufactured under the guidelines of ISO Quality Standards to ensure consistent quality
All components are 100% NEW to provide improved performance and long life reliability
Engineering enhancements to internal components provide the latest, most efficient unit for your vehicle
Key components are 100% greased and lubricated to ensure long term reliability in harsh conditions
All dimensions and key mounting surfaces and contact points are gauged and measured to ensure proper fit

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$214.99

Carquest Professional starters are 100% new units that are built to meet or exceed original equipment (O.E.) specifications. Our new starters are engineered and built by an IATF/TS 16949 certified supplier that meets the highest standards achievable. Carquest Professional starters are re-engineered to include improvements and enhancements (where applicable) to the OE design to extend longevity and service life. Our new starters are built with all new components and are 100% triple-tested to ensure high quality that is backed by an industry-leading warranty. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.

Product Features:

Designed to meet or exceed OE specifications for fit, form and function
Manufactured by an IATF/TS 16949 supplier that meets or exceeds the highest standards in the industry
Housings are 100% new with dimensions computer gauged and measured to ensure proper fitment
All new components are utilized to ensure long service life
Internal electronics are upgraded for heavy duty reliability (where applicable)
Armatures and commutators are 100% load tested
Application-specific technical bulletins included where applicable
All units are 100% triple tested to ensure quality and performance
Technical support team staffed with ASE Certified Technicians: 1-800-228-10531

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$403.10

NEW units are manufactured under the guidelines of ISO Quality Standards to ensure consistent quality
All components are 100% NEW to provide improved performance and long life reliability
Engineering enhancements to internal components provide the latest, most efficient unit for your vehicle
Key components are 100% greased and lubricated to ensure long term reliability in harsh conditions
All dimensions and key mounting surfaces and contact points are gauged and measured to ensure proper fit

from

$179.99

Carquest Premium alternators are premium constructed, original equipment (O.E.) replacement parts with industry-leading warranties. Our Carquest Premium alternators are designed to meet or exceed OE specifications for fit, form and function. Our alternators are remanufactured by an IATF/TS 16949 certified supplier that meets the highest standards achievable. We replace all wear components (brushes, bushings and bearings) with new components to ensure long-life. All critical components are electronically tested during assembly and the entire unit is 100% tested, ensuring proper performance backed by a Limited Lifetime Warranty. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.

Product Features:

Each unit is triple-tested to ensure quality and performance
All wear components (brushes, bushings, and bearings) are replaced with all NEW components in the remanufacturing process
Tech Hotline with trained ASE Certified Technicians: Call Carquest Technical Support at 1-800-228-9672

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$206.99

Designed to meet or exceed OE specifications for fit, form and function
Manufactured by an IATF/TS 16949 supplier that meets or exceeds the highest standards in the industry
Housings are 100% new with dimensions computer gauged and measured to ensure proper fitment
All new components are utilized to ensure long service life
Internal electronics are upgraded for heavy duty reliability (where applicable)
Armatures and commutators are 100% load tested
Application-specific technical bulletins included where applicable
All units are 100% triple tested to ensure quality and performance
Technical support team staffed with ASE Certified Technicians: 1-800-228-10533

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$237.84

ACDelco’s Professional Remanufactured Starters are the ideal high quality replacement for many vehicles on the road today. ACDelco’s Professional Remanufactured Starters have 100% new copper and bronze sintered, oil-impregnated bushings, plus the solenoid contacts are 100% new with copper terminals and plated hardware. Remanufacturing starters is an industry standard practice that involves disassembly of existing units, and replacing components that are most prone to wear and failure with new components. Damaged and obsolete parts are replaced and are 100% end of line tested to ensure they perform to ACDelco specifications. In addition, remanufacturing also benefits the environment by returning components back into service rather than processing as scrap or simply disposing of them. These premium aftermarket reman starters are manufactured to fit a wide range of vehicles and will provide the same performance, durability, and service life you expect from ACDelco.

Product Features:

Remanufactured using consistent quality processes; not just rebuilt
Starters have 100% new copper and bronze sintered and oil-impregnated armature bushings
Solenoid contacts are 100% NEW with copper terminals and plated hardware
Performance-tested and inspected to ensure they meet ACDelco quality design and component specifications

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$195.01

When your vehicle needs a new starter, you need to treat your car right. Replace it with a Premium Quality remanufactured starter from OE+. All of our starters are completely remanufactured to meet or exceed O.E. specifications. The solenoid is completely remanufactured or replaced with new. The brush plate holder is cleaned and plated for corrosion prevention. The armature is tested and recoated. The commutator is remachined or replaced for proper brush contact. The drive is completely remanufactured or replaced. The gear is chamfer checked. All housings are cleaned and refinished to prevent corrosion.

Product Features:

OE-Equivalent Direct Fit Application.
Fully tested to meet OE specifications.
Provides exceptional reliability.

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$217.99

ACDelco Gold (Professional) Remanufactured Starters are the high quality alternative to Original Equipment (OE) parts. These starters have new bronze sintered and oil-impregnated bushings. Solenoid contacts are new with copper terminals and plated hardware. Remanufacturing starters is an industry standard practice that involves disassembly of existing units, and replacing components that are most prone to wear with new components. Damaged and obsolete parts are replaced and are end of line tested to ensure they perform to ACDelco specifications. In addition, remanufacturing returns components back into service rather than processing as scrap or simply disposing of them. ACDelco Gold (Professional) parts are manufactured to meet your expectations for fit, form, and function, making them a smart choice for General Motors vehicles, as well as most makes and models, including special applications. These high-quality parts are backed by General Motors. Some ACDelco Gold parts may have formerly appeared as ACDelco Professional.

Product Features:

Remanufactured using consistent quality processes; not just rebuilt
Starters have new bronze sintered and oil-impregnated armature bushings
Solenoid contacts are new with copper terminals and plated hardware
Performance-tested and inspected to ensure they meet your expectations for quality design and component specifications

from

$217.36

Starter

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$227.47

Starter

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$332.99

GM Genuine Parts Remanufactured Starter Motors are designed, engineered, and tested to rigorous standards and are backed by General Motors. Remanufacturing starter motors is an industry standard practice that involves disassembly of existing units, and replacing components that are most prone to wear with new components. Damaged and obsolete parts are replaced and are end of line tested to ensure they perform to GM specifications. In addition, remanufacturing returns components back into service rather than processing as scrap or simply disposing of them. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

Product Features:

Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional.
Remanufacturing is an industry standard practice that returns parts into service rather than scrapping them
Tested to ensure they perform to GM specifications

from

$161.99

Remanufactured using consistent quality processes; not just rebuilt
Starters have new bronze sintered and oil-impregnated armature bushings
Solenoid contacts are new with copper terminals and plated hardware
Performance-tested and inspected to ensure they meet your expectations for quality design and component specifications

Upgrade your 2003 Chevrolet Trailblazer with Top-Quality Alternators and Starters

When it comes to maintaining or upgrading your 2003 Chevrolet Trailblazer, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Chevrolet or enhancing its overall performance, Alternators and Starters are key to keeping your Trailblazer functioning at its best. At Advance Auto Parts, we offer a wide selection of 25 Alternators and Starters for the 2003 Chevrolet Trailblazer, designed to meet your needs without breaking the bank. From Alternator Part replacements to Starter Parts upgrades, we’ve got you covered with parts that fit your vehicle perfectly and ensure long-lasting performance.

Affordable Prices and Wide Selection

Shopping for Alternators and Starters for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Alternators and Starters for your 2003 Chevrolet Trailblazer at great prices. Our Alternators and Starters inventory for this model ranges from just $18.50 to $501.99, with an average price of $184.08. Our 25 Alternators and Starters in stock come from 9 trusted brands, so you’re sure to find the right part for your 2003 Chevrolet Trailblazer without overspending.

Top Brands and High Customer Satisfaction

Advance Auto Parts takes pride in offering only the best brands in the automotive industry. For your 2003 Chevrolet Trailblazer, we stock popular OEM and aftermarket Alternators and Starters from top names like Carquest Premium, and more. Carquest Premium Alternators and Starters start at just $37.99 and boast an impressive 4 stars average rating from customers. With 76 customer reviews and counting, our 2003 Chevrolet Trailblazer Alternators and Starters have a strong track record of reliability, ensuring you can trust your purchase.

Explore Related Parts and More

While you’re here, don’t forget to check out other essential categories that go hand in hand with Alternators and Starter upgrades. Explore related part types like Batteries and Chargers, Oil and Lubricants and more to make sure your 2003 Chevrolet Trailblazer is always ready to roll. We’re committed to providing you with everything you need to keep your Trailblazer in top shape, all in one place. Start shopping confidently below for your 2003 Chevrolet Trailblazer!

Best-Selling Alternator Parts for 2003 Chevrolet Trailblazers

Enhance the driving experience in your Chevrolet with 11 quality Alternator Part components, starting at $37.99.

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from

$42.99

Direct replacement – this alternator connector matches the appearance and function of the factory hardware on specified applications.
Ideal solution – this connector is a reliable replacement for an original part that is missing or has failed due to fatigue
Durable construction – this part is made from quality materials to ensure reliable performance and long service life
Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience

from

$216.99

Designed to meet or exceed OE specifications for fit, form and function
Remanufactured by an IATF/TS 16949 supplier that meets or exceeds the highest standards in the industry
Regulators and rectifiers are 100% electronically load tested for reliable charging performance
100% new OE-quality brushes and bearings are used to ensure long service life
Rotors and stators are load tested and double insulated for maximum charging performance
Slip rings are precision polished for maximum brush contact and service life
Application-specific technical bulletins included where applicable
All units are 100% triple tested to ensure quality and performance
Technical support team staffed with ASE Certified Technicians: 1-800-228-9672

from

$167.99

Designed to meet OE specifications for fit, form and function
Remanufactured by an IATF/TS 16949 supplier that meets or exceeds the highest standards in the industry
Application-specific technical bulletins included where applicable
All units are 100% triple tested to ensure quality and performance
Technical support team staffed with ASE Certified Technicians: 1-800-228-9672

from

$242.99

Designed to meet or exceed OE specifications for fit, form and function
Manufactured by an IATF/TS 16949 supplier that meets or exceeds the highest standards in the industry
All new components are utilized to ensure long service life
Housings are 100% new with dimensions computer gauged and measured to ensure proper fitment
Internal electronics are upgraded for heavy duty reliability (where applicable)
Regulators and rectifiers are 100% electronically load tested for reliable charging performance
Application-specific technical bulletins included where applicable
All units are 100% triple tested to ensure quality and performance
Technical support team staffed with ASE Certified Technicians: 1-800-228-9672
Rotors and stators are load tested and double insulated for maximum charging performance

from

$37.99

Premium quality materials for longer service life
Sealed connections (where applicable) to prevent environmental corrosion and performance issues
Global coverage for import and/or domestic applications
OE specified wire gauge to ensure a reliable electrical connection
Designed to meet or exceed OE specifications in form, fit and function

from

$205.48

Are you looking for a quality replacement part for your vehicle’s electrical system? Today’s remanufactured alternator is a complex combination of inner workings, and we completely remanufacture them to our own premium standard. All terminals are cleaned and replated. The slip rings are polished or replaced to maintain proper contact. The rectifier, diodes, rotor and bearings are performance tested or replaced for maximum output. All housings are cleaned and refinished and all stators are tested for integrity and recoated for corrosion prevention.

Product Features:

OE-Equivalent Direct Fit Application.
Fully tested to meet OE specifications.
Provides exceptional reliability.

from

$203.99

ACDelco Gold (Professional) Remanufactured Alternators are the high quality alternative to Original Equipment (OE) parts. These alternators use high-quality bearings with high-temp lubricant and double-lipped rubber seals. Rotors and stators are electronically tested and then sealed with secondary insulating coating. Remanufacturing alternators is an industry standard practice that involves disassembly of existing units, and replacing components that are most prone to wear with new components. Damaged and obsolete parts are replaced and are end of line tested to ensure they perform to ACDelco specifications. In addition, remanufacturing returns components back into service rather than processing as scrap or simply disposing of them. ACDelco Gold (Professional) parts are manufactured to meet your expectations for fit, form, and function, making them a smart choice for General Motors vehicles, as well as most makes and models, including special applications. These high-quality parts are backed by General Motors. Some ACDelco Gold parts may have formerly appeared as ACDelco Professional.

Product Features:

Remanufactured using consistent quality processes; not just rebuilt
Alternators use high-quality bearings with high-temp lubricant and double-lipped rubber seals, reducing friction, vibration, and noise
Rotors and stators are electronically tested and then sealed with secondary insulating coating to help prevent shorts
Performance-tested and inspected to ensure they meet your expectations for quality design and component specifications
Remanufacturing is an industry standard practice that returns parts into service rather than scrapping them
Tested to ensure they perform to ACDelco specifications

from

$211.00

ACDelco’s Professional Remanufactured Alternators are the ideal high quality replacement for many vehicles on the road today. ACDelco’s Professional Remanufactured Alternators use high-quality bearings with high-temp lube and double-lipped rubber seals. Rotors and stators are electronically tested and then sealed with secondary insulating coating. Remanufacturing alternators is an industry standard practice that involves disassembly of existing units, and replacing components that are most prone to wear and failure with new components. Damaged and obsolete parts are replaced and are 100% end of line tested to ensure they perform to ACDelco specifications. In addition, remanufacturing also benefits the environment by returning components back into service rather than processing as scrap or simply disposing of them. These premium aftermarket reman alternators are manufactured to fit a wide range of vehicles and will provide the same performance, durability, and service life you expect from ACDelco.

Product Features:

Remanufactured using consistent quality processes; not just rebuilt
Alternators use high-quality bearings with high-temp lube and double-lipped rubber seals, reducing friction, vibration, and noise
Rotors and stators are electronically tested and then sealed with secondary insulating coating to help prevent shorts
All units are 100% performance tested and inspected to ensure they meet ACDelco quality design and component specifications

from

$501.99

Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional
Remanufacturing is an industry standard practice that returns parts into service rather than scrapping them
Tested to ensure they perform to GM specifications

from

$463.61

100% newly manufactured as an exact replacement for your GM vehicle’s original alternator
Components are tested to meet original specification requirements, for remarkable durability
GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function

from

$236.99

Bosch Premium Alternators are designed, built and tested to provide the ultimate in performance and reliability.

Product Features:

Full-load tested to guarantee compliance with Bosch’s strict performance specifications
100% factory tested, units are remanufactured (not rebuilt)
Built to last – uses high quality materials and the most technologically advanced developments.

Most Popular 2003 Chevrolet Trailblazer Starter Parts

Customize your Chevrolet with 9 Starter Parts products like Starters and Starter Relays, all priced under $272.26.

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from

$199.99

Carquest Premium starters are premium constructed, original equipment (O.E.) replacement parts with industry-leading warranties. Our Carquest Premium starters are designed to meet or exceed OE specifications for fit, form and function. Our starters are remanufactured by an IATF/TS 16949 certified supplier that meets the highest standards achievable. We replace all wear components (brushes, bushings and needle bearings) with new components to ensure long-life. All critical components are electronically tested during assembly and the entire unit is 100% tested, ensuring proper performance backed by an industry-leading warranty. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.

Product Features:

Each unit is triple-tested to ensure quality and performance
All wear components (brushes, bushings, and bearings) are replaced with all NEW components in the remanufacturing process
Tech Hotline with trained ASE Certified Technicians: Call Carquest Technical Support at 1-800-228-9672

from

$195.01

OE-Equivalent Direct Fit Application.
Fully tested to meet OE specifications.
Provides exceptional reliability.

from

$195.06

Remanufactured using consistent quality processes; not just rebuilt
Starters have 100% new copper and bronze sintered and oil-impregnated armature bushings
Solenoid contacts are 100% NEW with copper terminals and plated hardware
Performance-tested and inspected to ensure they meet ACDelco quality design and component specifications

from

$164.99

Carquest Standard starters are designed and built to meet original equipment (O.E.) specifications, while providing great value. Our starters are remanufactured by an IATF/TS 16949 certified supplier that meets the highest standards achievable. All of our Carquest Standard starters are inspected and 100% tested to ensure they are built to meet OEM fit, form and function. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.

Product Features:

Designed to meet OE specifications for fit, form and function
Remanufactured by an IATF/TS 16949 supplier that meets or exceeds the highest standards in the industry
Application-specific technical bulletins included where applicable
All units are 100% triple tested to ensure quality and performance
Technical support team staffed with ASE Certified Technicians: 1-800-228-9672
Designed to meet OE specifications for fit, form and function
Remanufactured by an IATF/TS 16949 supplier that meets or exceeds the highest standards in the industry
Application-specific technical bulletins included where applicable
All units are 100% triple tested to ensure quality and performance

from

$272.26

Bosch has been a major supplier of new alternators and starters to OE vehicle manufacturers since 1913. Securing OE certification requires strict adherence to stringent precision and performance criteria. These same exacting criteria are also applied in the manufacturing of all Bosch aftermarket alternators and starters. Whether 100% remanufactured or new, Bosch Premium Alternators and Starters are quality built and 100% factory tested to ensure years of reliable performance, even under the most extreme operating conditions. That’s why they are preferred by more professional installers.

Product Features:

Built to last using the highest quality materials and the most technologically advanced manufacturing processes
Remanufactured using more new parts than any other unit
100% exhaustive multipoint quality and performance testing throughout the remanufacturing process ensures optimum starting and charging performance under all operating conditions
Every unit is full-load tested to guarantee compliance with Bosch strict performance specifications
Solenoid with 100% new terminal hardware, contact face and high temperature cap, are completely disassembled and computer performance tested for pull/hold strength
100% new long life self-lubricating brushes
Gear train all new bushings
Drive with 100% new bushings, springs, rollers, washers caps and high temperature lubrication
Gear train lubricated with OE-specified grease providing protection from – 4 0 ?F to +3 02 ?F
Commutator remachined to Bosch tight tolerances
Permanent magnets/field coils tested for field strength and shorts (replaced with new as required)
Armature continuity tested, gauged, straightened and shimmed
All electrical connections resoldered
All shaft splines and load bearing surfaces lubricated with OE high temperature grade

from

$217.36

Starter

from

$194.99

Bosch Premium Starters are designed, built and tested to provide the ultimate in performance and reliability.

from

$161.99

Remanufactured using consistent quality processes; not just rebuilt
Starters have new bronze sintered and oil-impregnated armature bushings
Solenoid contacts are new with copper terminals and plated hardware
Performance-tested and inspected to ensure they meet your expectations for quality design and component specifications

from

$18.50

A/C Control Relay

Top Picks for 2003 Chevrolet Trailblazer Ignition Lock Parts

Upgrade Chevrolet Trailblazers with top-quality Ignition Lock Parts parts, including 5 OEM and aftermarket selections for your 2003 model.

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from

$135.99

Direct replacement – this ignition lock housing matches the fit and function of the original equipment lock housing.
Durable materials – this lock housing is made from quality materials for reliable service.
Easy to install – no special tools required to install this lock housing
Quality tested – this part has undergone vehicle try-on and material testing

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$54.99

High-quality products that meet OE appearance and performance to provide professional technicians and DIYers with a cost-effective solution.

Product Features:

Designed to OE standards for ease of installation
Professional quality construction using solid brass tumblers, chrome plated brass keys, die-cast zinc lock cores and multiple, randomly assigned key codes ensures superior operation
Decades of industry leading research and development focused on meeting the technician’s needs
With industry leading expertise, when original equipment fails our products are designed to fix the inherent failure issues
BWD is a global manufacturer of original equipment ignition products, complete quality control is maintained through the manufacturing process from componentry to finished product

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$142.99

from

$61.99

Direct replacement – this ignition lock cylinder matches the fit and function of the original equipment assembly on certain vehicle years, makes and models.
Ideal solution – engineered to help restore and ensure the functionality of the lock cylinder.
Durable construction – designed and manufactured to strict specifications for reliable performance
Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience

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$53.99

Computer-Aided Design (CAD), laser scanning and 3D printing ┐ utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) ┐ in the connector terminal design process ensures speed-to-market and a precise connector fit guaranteed.
Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
100% end-of-line tested to ensure confidence and product reliability, every time.

Top-Rated Alternators and Starters Brands For Your 2003 Chevrolet Trailblazer

Shop for the best-rated brands offering Alternators and Starters and other products for your 2003 Chevrolet Trailblazers. Below you’ll find some of our best rated Alternators and Starters from Carquest Premium, and more. Alternators and Starters from these brands that fit a 2003 Trailblazer start at just $37.99 and are rated as high as 4 stars. OEM and aftermarket Alternators and Starters don’t get more top quality, durable, and affordable than from the brands below.

Popular Carquest Premium 2003 Chevrolet Trailblazer Alternators and Starters

When it comes to maintaining or upgrading your 2003 Chevrolet Trailblazer, using quality Alternators and Starters is essential to ensure durability and a perfect fit. Carquest Premium ticks all of those boxes. We offer a wide selection of Carquest Premium Alternators and Starters, specifically designed for the 2003 Chevrolet Trailblazer. With over 5 Carquest Premium brand Alternators and Starters in stock, you’re sure to find what you need. The prices for these top-notch parts start as low as $37.99, with an average price of just $130.39. Plus, with over 35 customer reviews and an average rating of 4 stars, you can trust that our Carquest Premium Alternators and Starters will get the job done right. Choose Advance Auto Parts for reliability, quality, and expert-approved parts that keep your vehicle running strong.

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$142.99

This product is not rated

Ignition Lock Housing

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$37.99

This product is not rated

Alternator Connector

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$53.99

This product is not rated

Ignition Lock Cylinder

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FAQs for 2003 Chevrolet Trailblazer Alternators and Starters

Which Alternators and Starters are best-sellers for 2003 Chevrolet Trailblazers?

Out of 25 Alternators and Starters that fit 2003 Chevrolet Trailblazers, the following parts are the top sellers:

Alternator: Remanufactured, 150 Amps (10008874) – $167.99
Alternator: New, 150 Amps (10017987) – $242.99
Ignition Lock Cylinder (20972535) – $54.99

What’s the price range for 2003 Chevrolet Trailblazer Alternators and Starters?

Alternators and Starter prices for the 2003 Chevrolet Trailblazer start at $18.50 and go up to $501.99 for the most premium parts.

What’s the average price of a Alternators and Starter for a 2003 Chevrolet Trailblazer?

The average price for Alternators and Starters for the 2003 Chevrolet Trailblazer is $184.08. Keep in mind the variety of part types within our Alternators and Starter category so you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Alternators and Starters for other Chevrolet Trailblazer model years?

Yes, we currently carry Alternators and Starters for 10 model years of Chevrolet Trailblazers between 2002 and 2023. Alternators and Starters are bought most frequently for the following model years: 2009, 2008, 2007, 2006, 2005, 2004, 2002, 2022, and 2023.

What are the cheapest Alternators and Starters for my 2003 Chevrolet Trailblazer?

The cheapest 2003 Chevrolet Trailblazer Alternators and Starters we carry in stock are:

A/C Control Relay (11590995) – $18.50
Alternator Connector (12447173) – $37.99
Alternator Pigtail (10717336) – $42.99
Ignition Lock Cylinder (12526006) – $53.99
Ignition Lock Cylinder (20972535) – $54.99

What are the top-rated Alternators and Starters that fit the 2003 Chevrolet Trailblazer?

Out of 76 reviews by customers, our 2003 Chevrolet Trailblazer Alternators and Starters have an average customer rating of . These are some of the highest-rated Alternators and Starter types for the 2003 Chevrolet Trailblazer and their top-rated products:

Starter Parts
- Starter Remanufactured Premium (15220146) – $199.99
Alternator Parts
- Starter Remanufactured Premium (15220146) – $199.99
Ignition Lock Parts
- Starter Remanufactured Premium (15220146) – $199.99

What types of Alternators and Starters do you sell for my 2003 Chevrolet Trailblazer?

As of 2/5/25, these are some of the most in-demand types of Alternators and Starters for a 2003 Chevrolet Trailblazer:

Can I get help with 2003 Chevrolet Trailblazer Alternators and Starter orders?

Contact our customer support team, by chat or phone, through the help desk page, where you can find instant answers about Chevrolet Alternators and Starters and more.

What is your return policy for Chevrolet Trailblazer Alternators and Starters?

Advance Auto Parts keeps returns simple. For new Chevrolet Trailblazer Alternators and Starters and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.

2003 Chevrolet Trailblazer Alternators and Starters

ACDelco – A/C Control Relay (Part No.R1142578446ACD)

ACDelco – GM Original Equipment Alternator, New (Part No.F4000453847ACD)

Carquest Premium – Alternator: Remanufactured, 145 Amps (Part No.8499A)

Carquest Professional – Alternator: New, 145 Amps (Part No.8292AN)

Reliance – Alternator (Part No.F400089320RLN)

GM Genuine Parts – Alternator: Remanufactured, 150 Amps (Part No.321-2127)

Carquest Standard – Alternator: Remanufactured, 150 Amps (Part No.8290AV)

Dorman – Ignition Lock Cylinder Housing With Passlock Sensor (Part No.924-713)

Carquest Premium – Ignition Lock Cylinder (Part No.CSC1473)

Carquest Premium – Ignition Lock Housing (Part No.CSC1564)

Dorman – Ignition Lock Cylinder: Two Keys Included (Part No.926-059)

Carquest – Ignition Lock Cylinder (Part No.CS811L)

Dorman – Alternator Pigtail (Part No.645-569)

ACDelco – Black Multi-Purpose Pigtail (Part No.PT2787)

Carquest Premium – Alternator Connector (Part No.PTA1229)

Carquest Premium – Alternator Connector (Part No.PTA1117)

ACDelco – Professional Premium Starter, New (Part No.F5000576398ACD)

Carquest Professional – Starter-New (Part No.6492SN)

ACDelco – Professional Premium Starter, New (Part No.F5000576409ACD)

Carquest Premium – Starter Remanufactured Premium (Part No.6492S)

Carquest Professional – Starter-New (Part No.6494SN)

ACDelco – Professional Starter, Remanufactured (Part No.F5000576288ACD)

OE+ – Remanufactured Starter (Part No.F50002246498IAP)

ACDelco – Starter (Part No.336-2002A)

Autopart International Inc – Starter (Part No.F50002269124API)

Bosch – Starter (Part No.F50001332816BOS)

GM Genuine Parts – Starter (Part No.323-1661)

ACDelco – Starter (Part No.336-1930A)

Dorman – Alternator Pigtail (Part No.645-569)

Carquest Premium – Alternator Remanufactured Premium (Part No.8290A)

Carquest Standard – Alternator: Remanufactured, 150 Amps (Part No.8290AV)

Carquest Professional – Alternator: New, 150 Amps (Part No.8290AN)

Carquest Premium – Alternator Connector (Part No.PTA1117)

OE+ – Remanufactured Alternator (Part No.F40002246942IAP)

ACDelco – Alternator: Remanufactured, 150 Amps (Part No.334-2527A)

ACDelco – Professional Alternator, Remanufactured (Part No.F4000576019ACD)

GM Genuine Parts – Alternator: Remanufactured, 150 Amps (Part No.321-2127)

ACDelco – GM Original Equipment Alternator, New (Part No.F4000453847ACD)

Bosch – Alternator: Remanufactured, 150 Amps (Part No.AL8805X)

Carquest Premium – Starter Remanufactured Premium (Part No.6490S)

OE+ – Remanufactured Starter (Part No.F50002246498IAP)

ACDelco – Professional Starter, Remanufactured (Part No.F5000576287ACD)

Carquest Standard – Starter Remanufactured Standard (Part No.6490SV)

Bosch – Professional Preferred Starter, Remanufactured (Part No.F5000403120BOS)

Autopart International Inc – Starter (Part No.F50002269124API)

Bosch – Remanufactured Starter (Part No.SR8678X)

ACDelco – Starter (Part No.336-1930A)

ACDelco – A/C Control Relay (Part No.R1142578446ACD)

Dorman – Ignition Lock Cylinder Housing With Passlock Sensor (Part No.924-713)

Carquest – Ignition Lock Cylinder (Part No.CS811L)

Carquest Premium – Ignition Lock Housing (Part No.CSC1564)

Dorman – Ignition Lock Cylinder: Two Keys Included (Part No.926-059)

Carquest Premium – Ignition Lock Cylinder (Part No.CSC1473)