2003 GMC Sierra 2500 HD Alternators and Starters

Essential 2003 GMC Sierra 2500 HD Alternators and Starters

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.
See More

Carquest HD Electrical – Starter: New, 12V, 11 Tooth (Part No.72-6757N)

Starter: New, 12V, 11 Tooth

from

$218.99
Carquest Starters take advantage of the power of 100% NEW to restore hard working vehicles to OE specified performance & endurance. All new units and components offer unmatched performance, reduce downtime & customer comebacks. Carquest Starters are prime

Product Features:
  • High quality components form the foundation our parts are built from. Transpo’s innovative and high quality electronic technologies for internal components are incorporated to achieve high performance outputs.
  • Power & Efficiency are designed into every component. No matter the ambient temperature, starters will provide maximum cranking power to get engines running.
  • Connectors and power transmission components are highly resistant to extreme moisture environments because we use nickel plated contactors and double armature coating. We maintain a rigorous test schedule with endurance, salt spray, dirt and grime and out
  • Integrated magnetic switch provides protection against weak power from batteries.
  • Over-Crank Protection (OCP) Monitors heat in starter from over cranking & shuts down starter to prevent burning
  • Precision design and machining are the Extreme vibration failure solution. Vehicles often perform in adverse conditions like extreme temperatures that create tolerance shifts that produce high frequency vibration, which leads to resistance in power transf
See More

Carquest Premium – Starter Remanufactured Premium (Part No.6971S)

Starter Remanufactured Premium

from

$222.99
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.
See More

Carquest Premium – Starter Remanufactured Premium (Part No.17880S)

Starter Remanufactured Premium

from

$137.99
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.
See More

Carquest Standard – Starter Remanufactured Standard (Part No.6492SV)

Starter Remanufactured Standard

from

$152.99
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
See More

Bosch – Premium 100% Remanufactured Starter (Part No.SR8552X)

Premium 100% Remanufactured Starter

from

$228.99
Bosch Premium Starters are designed, built and tested to provide the ultimate in performance and reliability

Product Features:
  • Built for extremes! Our new and reman starters and alternators are 100% factory tested to ensure reliable performance, under extremes of heat, cold and high demand
  • Our new and reman starters and alternators are designed to perform equal to or better than the original equipment parts, that they replace
  • Our new and reman starters and alternators are designed to be identical in fit and performance to original equipment parts
  • Our new and reman starters and alternators utilize the latest manufacturing technologies and highest quality parts to ensure the best performance and longest life
See More

Carquest Premium – Alternator: Remanufactured, 145 Amps (Part No.8550A)

Alternator: Remanufactured, 145 Amps

from

$205.99
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.
See More

Carquest Professional – Alternator: New, 160 Amps (Part No.11075AN)

Alternator: New, 160 Amps

from

$235.99
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
  • 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
See More

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
See More

Carquest Professional – Alternator: New, 145 Amps (Part No.8302AN)

Alternator: New, 145 Amps

from

$247.99
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
See More

Carquest Premium – Alternator: Remanufactured, 145 Amps (Part No.8292A)

Alternator: Remanufactured, 145 Amps

from

$211.99
Carquest Premium Alternators and all components are thoroughly inspected and tested to meet or exceed manufacturer specifications. Every remanufactured unit is 100% performance tested from components through final assembly, to ensure dependable service and reliable performance. Remanufactured (not rebuilt) to meet or exceed OE quality in fit, form, and function.

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
See More

Carquest Premium – Connector (Part No.PTA1011)

Connector

from

$25.99
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
See More

Carquest Premium – Alternator Connector (Part No.PTA1142)

Alternator Connector

from

$42.99
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
See More

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
See More

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
See More

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
See More

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
See More

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.
See More

ACDelco – Ignition Lock Cylind (Part No.M5040290059ACD)

Ignition Lock Cylind

from

$80.76
Ignition Lock Cylind

Carquest Premium – Ignition Lock Cylinder CSC1633 (Part No.CSC1633)

Ignition Lock Cylinder CSC1633

from

$73.99
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.
See More

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.
See More

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.
See More

Carquest Premium – Starter Solenoid (Part No.SBC2125)

Starter Solenoid

from

$84.99
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.
See More

Carquest Premium – Starter Solenoid (Part No.SBE1547)

Starter Solenoid

from

$106.99
The starting system consists of the rotating electrical motor and solenoid which may be mounted on the starter motor or mounted remotely. The electric motor drives a gear which engages with the engine’s flywheel located at the rear of the motor, when the motor is energized, the motor will turn the engines crankshaft. The starter solenoid is an electric relay, or switch used to provide power to the starter motor or any electrical device that requires high amperage to operate. A low amperage wire winding within the solenoid will create magnetic force when voltage is applies from a remote switch, such as the ignition switch or another type of remote mounted switch. The contacts within the relay carry a high amperage load to run an electric motor or some other type of high load circuit.

Product Features:
  • Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
See More

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.
See More

Carquest – Starter Solenoid (Part No.S5130)

Starter Solenoid

from

$89.05
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
  • Our starter solenoids have more pure copper windings than found on most vehicles to create a stronger magnetic field
  • Our polyester-insulated magnet wire, cadmium-plated copper discs and solid contact bolts reduce voltage drop and deliver full battery power to the starter while providing greater protection against electrical overload
  • Pure copper battery terminal studs reduce resistance to permit higher current flow, even in the hottest environments, for better performance
  • We understand and expect the demand for quality, our starting and charging system products feature high grade materials for extended service life
  • BWD is a global manufacturer of original equipment ignition products, complete quality control is maintained through the manufacturing process from componentry to finished product
See More

2003 GMC Sierra 2500 HD Alternators and Starters

You count on your 2003 GMC Sierra 2500 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 39 Alternators and Starters ranging in price from $15.79 to $506.99, you’re sure to find everything you need for your 2003 GMC Sierra 2500 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 2500 HD Alternators and Starters start as low as $15.79!

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 11,336 extensive product reviews on 2003 GMC Sierra 2500 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 2500 HD below to get started!

Top-Rated Alternators and Starters Brands For Your 2003 GMC Sierra 2500 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 2500 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 2500 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 2500 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 2500 HD Alternators and Starters

What are the most purchased Alternators and Starters for the 2003 GMC Sierra 2500 HD?

Out of 39 Alternators and Starters for the 2003 GMC Sierra 2500 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 2500 HD Alternators and Starters?

Top-rated Alternators and Starters for your 2003 GMC Sierra 2500 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”