2003 GMC Sierra 1500 HD Alternators and Starters

Essential 2003 GMC Sierra 1500 HD Alternators and Starters

Carquest Premium – Alternator Connector (Part No.PTA1117)

Alternator Connector

from

$37.99
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:
  • 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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Carquest Premium – Alternator Connector (Part No.PTA1201)

Alternator Connector

from

$15.79
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:
  • 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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Dorman – Alternator Pigtail (Part No.645-569)

Alternator Pigtail

from

$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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Carquest Premium – Alternator Connector (Part No.PTA1047)

Alternator Connector

from

$18.29
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:
  • 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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Carquest Professional – Starter-New (Part No.6492SN)

Starter-New

from

$205.99
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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GM Genuine Parts – Starter (Part No.323-1622)

Starter

from

$419.99
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
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Carquest Premium – Starter Remanufactured Premium (Part No.6492S)

Starter Remanufactured Premium

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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ACDelco – GM Original Equipment Starter, Remanufactured (Part No.F5000350719ACD)

GM Original Equipment Starter, Remanufactured

from

$571.30
ACDelco GM Original Equipment Light Duty Remanufactured Starters are engineered for virtually every make and model of GM car, light duty truck, and sport utility vehicle. 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 original equipment starters 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:
  • Contain 100% new copper and bronze sintered, oil-impregnated bushings
  • Solenoid contacts are 100% new with copper terminals and plated hardware
  • Remanufactured to meet or exceed original equipment specifications and are 100% performance-tested
  • Components are tested to meet original specification requirements, for remarkable durability
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Carquest Premium – Multi Purpose Relay (Part No.SBC2109)

Multi Purpose Relay

from

$43.49
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.
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ACDelco – GM Original Equipment Alternator, New (Part No.F4000414046ACD)

GM Original Equipment Alternator, New

from

$392.50
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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Bosch – Alternator: Remanufactured, 145 Amps (Part No.AL8529X)

Alternator: Remanufactured, 145 Amps

from

$208.99
Bosch has been a major supplier of new alternators to Original Equipment 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. Bosch Premium Alternators are quality built and 100% factory tested to ensure years of reliable performance, even under the most extreme operating conditions.

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.
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Carquest Professional – Alternator: New, 105 Amps (Part No.8247AN)

Alternator: New, 105 Amps

from

$209.99
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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Carquest Premium – Alternator: Remanufactured, 130 Amps (Part No.8237A)

Alternator: Remanufactured, 130 Amps

from

$163.99
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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Carquest HD Electrical – Alternator: New, 253 Amps, With Pulley (Part No.71-8292N-253A)

Alternator: New, 253 Amps, With Pulley

from

$326.99
Carquest Starters with 100% NEW construction will restore hard working vehicles to exceed OE specified performance & endurance. All new units and components offer unmatched performance, reduce downtime & customer comebacks. Carquest HD alternators are pri

Product Features:
  • Contains Innovative Brush-less and Premium Brush Components that have been tested and certified for highest possible power output
  • Stator – wound to OE specifications. Heavy coated Polyester wire provides consistent conductivity
  • Premium Transpo rectifiers use 13mm press fit Diodes for maximum performance
  • Rotor shafts CNC machined & precision balanced to eliminate vibration
  • Over-Voltage shutdown limits voltage if output terminal is disconnected form the battery
  • Load dump protection ensures transient voltage spikes do not damage transistor
  • Improved power transmission with lower engine speed keeps accessories and powered implements running at maximum output without additional load to the engine.
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Bosch – Alternator: New, 105 Amps (Part No.AL8730N)

Alternator: New, 105 Amps

from

$239.99
Bosch has been a major supplier of new alternators to Original Equipment 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. Bosch Premium Alternators are quality built and 100% factory tested to ensure years of reliable performance, even under the most extreme operating conditions.

Product Features:
  • 100% new components withstand the harshest environments for the best performance and longest life
  • Built specifically to withstand excessive heat and high electrical demands.
  • All mounting points 100% gauged and resized or rethreaded for proper fit
  • Free 24-hour Roadside Assistance Protection with purchase of any Bosch Alternator
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Carquest – Multi Purpose Relay (Part No.84C1004)

Multi Purpose Relay

from

$19.99
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.
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Carquest Premium – Ignition Lock Cylinder CSA1482 (Part No.CSA1482)

Ignition Lock Cylinder CSA1482

from

$58.99
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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Carquest Premium – Ignition Lock Cylinder CSC2373 (Part No.CSC2373)

Ignition Lock Cylinder CSC2373

from

$78.99
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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Locksmart – Ignition Lock Cylinder (Part No.LC63200)

Ignition Lock Cylinder

from

$56.05
LockSmart® is a specialized aftermarket lock brand featuring door, trunk, and ignition lock cylinders. LockSmart® provides OE fit, form, and function locks across domestic and import applications for both late and older model vehicles.

Product Features:
  • Direct-fit OE replacement ignition lock cylinder ensures effective start of engine energy supply
  • Constructed from high-grade materials to ensure durability and longevity
  • Undergoes 100% testing for proper fit, form, and function
  • As a global manufacturer, we maintain complete quality control throughout the manufacturing process
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Carquest Premium – Ignition Lock Cylinder CSC1509 (Part No.CSC1509)

Ignition Lock Cylinder CSC1509

from

$58.99
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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Carquest Premium – Ignition Lock Housing (Part No.CSC1564)

Ignition Lock Housing

from

$142.99
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.
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ACDelco – Ignition Lock Cylind (Part No.M5040290059ACD)

Ignition Lock Cylind

from

$80.76
Ignition Lock Cylind

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

Ignition Lock Cylinder Housing With Passlock Sensor

from

$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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Carquest Premium – Ignition Lock Cylinder CSA2005 (Part No.CSA2005)

Ignition Lock Cylinder CSA2005

from

$88.99
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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2003 GMC Sierra 1500 HD Alternators and Starters

You count on your 2003 GMC Sierra 1500 HD to run right. That means taking care of it with regular maintenance, necessary repairs, and the right parts. Advance Auto Parts can help with all of that thanks to our extensive inventory of trusted Alternators and Starters. With 32 Alternators and Starters ranging in price from $19.99 to $506.99, you’re sure to find everything you need for your 2003 GMC Sierra 1500 HD.

Brands matter. If you want to shop a specific Alternators and Starters brand, we stock 9 different brands like Carquest, Carquest Premium, and Carquest Professional. 2003 GMC Sierra 1500 HD Alternators and Starters start as low as $19.99!

One of the best ways to find top quality OEM or aftermarket Alternators and Starters is by asking professionals. Short of that, you can shop with confidence thanks to our 1,550 extensive product reviews on 2003 GMC Sierra 1500 HD Alternators and Starters. Some of the top-rated Alternators and Starters products we carry are Alternator: New, 105 Amps with 4.5 stars and Alternator: Remanufactured, 105 Amps with 4.6 stars.

Did we mention you can order your Alternators and Starters from our online catalog and have them shipped right to your garage? Or, if you feel like seeing the parts first-hand, search for your nearest Advance Auto Parts location above and pick up in-store when you’re ready. Browse our full Alternators and Starters inventory for your 2003 GMC Sierra 1500 HD below to get started!

Top-Rated Alternators and Starters Brands For Your 2003 GMC Sierra 1500 HD

Trusted Alternators and Starters OEM and aftermarket product brands are what Advance Auto Parts specializes in. The brands we work with are sure to keep that 2003 GMC Sierra 1500 HD running right for years to come. In our inventory you’ll find brands like Carquest, Carquest Premium, Carquest Professional, and even more.

Popular Bosch Alternators and Starters

You’ll find popular Bosch brand products across Alternator Parts. All are waiting to get your 2003 GMC Sierra 1500 HD back on the road. Some of the top-rated Bosch products in these categories are:
Alternator: Remanufactured, 105 Amps
from $198.99
(1)
Alternator: Remanufactured, 105 Amps
Alternators

Top-Rated Carquest Standard Alternators and Starters


If Carquest Standard are what you’re looking for, our inventory holds plenty. We stock Carquest Standard brand Alternators and Starters for your 2003 GMC Sierra 1500 HD, and some of our most reviewed Carquest Standard parts include:
Alternator: Remanufactured, 105 Amps
from $140.99
(302)
Alternator: Remanufactured, 105 Amps
Alternators
Alternator: Remanufactured, 145 Amps
from $159.99
(48)
Alternator: Remanufactured, 145 Amps
Alternators

FAQs for 2003 GMC Sierra 1500 HD Alternators and Starters

What are the most purchased Alternators and Starters for the 2003 GMC Sierra 1500 HD?

Out of 32 Alternators and Starters for the 2003 GMC Sierra 1500 HD, the most popular in our inventory are:
Alternator: Remanufactured, 145 Amps
from $211.99
(105)
Alternator: Remanufactured, 145 Amps
Alternators
Starter Remanufactured Premium
from $179.99
(76)
Starter Remanufactured Premium
Starters
Starter-New
from $205.99
(69)
Starter-New
Starters

What are the top-rated 2003 GMC Sierra 1500 HD Alternators and Starters?

Top-rated Alternators and Starters for your 2003 GMC Sierra 1500 HD based on customer reviews/ratings are:
Alternator: New, 105 Amps
from $209.99
(75)
Alternator: New, 105 Amps
“It looks like a very good product, it definitely fixed my problem”
Alternator: Remanufactured, 105 Amps
from $179.99
(67)
Alternator: Remanufactured, 105 Amps
“03 silverado fit right in no changing pulleys job was done in 12 minutes. Been working good for a couple of weeks.”
Ignition Lock Cylinder
from $56.05
(29)
Ignition Lock Cylinder
“Exact fit for limited Ford Explorer”