2019 GMC Sierra 3500 HD Alternators and Starters

Name: Alternator: Remanufactured, 220 Amps, Limited Lifetime Warranty
Brand: Carquest Premium
SKU: 42095A
Price: 494.99 USD

Below you will find various in-demand GMC Alternators and Starters, components and accessories for your 2019 Sierra 3500 HD. Advance Auto Parts has popular Sierra 3500 HD parts like Starter Parts, Alternator Parts, Ignition Lock Parts and more. You’ll also find aftermarket and OEM Alternators and Starters for other Sierra 3500 HD model years including 2013, 2014, 2015, 2016, 2017, 2018, 2020, 2021, 2022 and more. Select a category of 2019 GMC Sierra 3500 HD Alternators and Starters below and start saving instantly.

Popular 2019 GMC Sierra 3500 HD Alternators and Starters Categories

Alternators

Starters

Ignition Lock Cylinders

Alternator Decoupler Pulleys

Starter Bolts

Starter Solenoid Connector

Essential Alternators and Starters for 2019 GMC Sierra 3500 HDs

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$494.99

Carquest Premium alternators are premium constructed, original equipment (O.E.) replacement parts with industry-leading limited 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 limited 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:

Product Features:

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

$508.99

This 150-amp alternator from WAI is engineered to deliver exceptional performance and reliability, making it a top choice for aftermarket replacements. Designed to meet or exceed OEM specifications, it ensures a perfect fit and hassle-free installation. The advanced voltage regulator protection safeguards against transient voltage spikes, preventing potential battery damage, while its low saturation voltage minimizes heat dissipation for enhanced durability. Featuring a high-power rectifier assembly with open junction press-fit diodes, this alternator is built to run cooler and more efficiently. Each unit comes with a printed copy of test results, giving you confidence in its performance from the very first use. With WAI’s commitment to quality, this alternator is a dependable solution for keeping your vehicle powered and running smoothly.

Product Features:

Engineered to meet or exceed OEM specifications for a perfect fit and hassle-free installation.
Voltage regulator protection – load dump protected against transient voltage spikes avoiding potential battery damage. Low saturation voltage results in lower heat dissipation. Fully compliant in communication with ECU.
High power rectifier assembly is designed with higher power open junction press fit diodes to keep the units running cool.
Each unit includes a printed copy of the test results so you know exactly what to expect from our parts right from the first time they power on.
Built with a focus on efficiency, the alternator’s low saturation voltage reduces energy loss, contributing to improved overall performance and reliability.

from

$229.99

Product Features:

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

$273.99

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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$124.99

This ignition lock cylinder is designed to match the fit and function of the original on specified GM vehicles. It comes complete with one valet key used for installation setup and 2 transponder keys. The transponder keys require programming with an appropriate scan tool.

Product Features:

Direct replacement – this ignition lock cylinder is designed to match the fit and function of the original on specified GM vehicles
Restores function – engineered to ensure proper operation of the ignition key when the original cylinder is binding or has failed
Programming required – the included transponder keys will require programming with an appropriate scan tool
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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$86.99

The Ignition switch is the main power switched distribution point in every vehicle. The ignition switch in some manner will be connected directly to the vehicle battery and then supply power out to every operating system in the vehicle that is required to be connected and disconnected from the vehicle’s battery or power source.

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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$109.99

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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$152.99

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.
100% end-of-line tested to ensure confidence and product reliability, every time.

from

$5.79

This starter bolt is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:

Direct replacement – this starter bolt matches the fit and function of the factory part on specified years, makes and models
Ideal solution – this bolt 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

$52.99

WIRE CONNECTOR

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$67.99

Litens Automotive is the original equipment (O.E.) supplier for this application. This replacement alternator pulley is also designed and produced by Litens and is exact in all form, fit, and performance characteristics as the original equipment part. Decoupling pulleys are engine specific and should never be interchanged with other types of pulley technology. The Litens OAD type pulley is designed to free-wheel in one direction and, with an internal spring and damping device, softly engage in the opposite direction. The OAD is designed as a sacrificial part of the front-end accessory drive system, protecting other belt driven component as well as the alternator. The correct decoupler pulley ensures smooth, quiet performance as well as increasing vehicle gas mileage. Patented Original Equipment Design. Litens is the world’s largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.

Product Features:

Designed and engineered by Litens Automotive. The inventor of the OAD (Overrunning Alternator Decoupler)
Protects the alternator and other front-end accessory drive components
17mm Hex tool included in kit to assist in removal and installation
New cap included with the OAD (Always ensure the cap is installed after installation)
Installation instructions included

from

$135.99

Litens Automotive is the original equipment supplier for the 2014-2018 Chevrolet Corvette, Silverado, Tahoe, Suburban / GMC Yukon, Sierra with 4.3/5.3/6.2L. This replacement pulley is also designed and produced by Litens and is exact in all form, fit, and performance characteristics as the original equipment part (with the exception of not having the car manufacturer’s logo or part number applied to the part). Decoupling pulleys are engine specific and should never be interchanged with other types of pulley technology. The Litens OAD type pulley is designed to free-wheel in one direction and, with an internal spring and damping device, softly engage in the opposite direction. The OAD is designed as a sacrificial part of the front-end accessory drive system, protecting other belt driven component as well as the alternator. The correct decoupler pulley ensures smooth, quiet performance as well as increasing vehicle gas mileage. Under normal driving conditions, the original pulley will require replacement in approx. 70,000 – 90,000 miles. Litens is the world’s largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.

Product Features:

Designed and engineered by Litens Automotive. The inventor of the “OAD” (overrunning alternator decoupler).
Patented original equipment design
Protects the alternator and other front-end accessory drive components
New cap included with the OAD
Installation instructions included

from

$128.99

Litens Automotive is the original equipment supplier for the 2014-2018 Chevrolet Corvette, Silverado,Tahoe, Suburban / GMC Yukon, Sierra with 4.3/5.3/6.2L . This replacement pulley is also designed and produced by Litens and is exact in all form, fit, and performance characteristics as the original equipment part (with the exception of not having the car manufacturer’s logo or part number applied to the part). Decoupling pulleys are engine specific and should never be interchanged with other types of pulley technology. The Litens OAD type pulley is designed to free-wheel in one direction and, with an internal spring and damping device, softly engage in the opposite direction. The OAD is designed as a sacrificial part of the front-end accessory drive system, protecting other belt driven component as well as the alternator. The correct decoupler pulley ensures smooth, quiet performance as well as increasing vehicle gas mileage. Under normal driving conditions, the original pulley will require replacement in approx. 70,000 – 90,000 miles. Litens is the world’s largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.

Product Features:

Designed and engineered by Litens Automotive. The inventor of the “OAD” (overrunning alternator decoupler).
Patented original equipment design
Protects the alternator and other front-end accessory drive components
New cap included with the OAD
Installation instructions included

from

$61.99

Designed and engineered by Litens Automotive. The inventor of the OAD (Overrunning Alternator Decoupler)
Protects the alternator and other front-end accessory drive components
17mm Hex tool included in kit to assist in removal and installation
New cap included with the OAD (Always ensure the cap is installed after installation)
Installation instructions included

from

$259.99

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
Incorporates new components in high-wear areas to enhance longevity and maintain optimal functionality.

from

$247.99

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

from

$223.99

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.

from

$218.99

Product Features:

Engineered to meet or exceed OEM specifications for a perfect fit and hassle-free installation.
Premium grade solenoids contains materials specifically selected for best conductivity. High temperature cap ensures that the solenoid works flawlessly in high heat environments. High dielectric strength outer case resists shorting.
Armatures have precision machined and upgraded steel shaft for improved durability and performance.
Each unit includes a printed copy of the test results so you know exactly what to expect from our parts right from the first time they power on.

from

$339.99

Product Features:

High Quality components form the foundation our parts are built from
Transpo innovative and high quality electronic technologies for internal components are incorporated to achieve high performance outputs
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

from

$447.99

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
Designed, engineered, and tested to rigorous standards, ensuring reliable performance and durability.
Replaces damaged and obsolete components with new parts to enhance functionality and extend service life.

from

$218.99

CARQUEST Starters with 100% NEW construction will restore hard working vehicles to exceed OE specified performance and endurance. All new units offer unmatched performance and reduce downtime.

Product Features:

High Quality components form the foundation our parts are built from
Transpo innovative and high quality electronic technologies for internal components are incorporated to achieve high performance outputs
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

from

$268.99

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: 1-800-228-9672
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: 1-800-228-9672

from

$335.99

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: 1-800-228-9672

from

$281.99

from

$208.99

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
Designed to meet the fit, form, and function expectations for a wide range of vehicles, including General Motors and special applications.

from

$259.99

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
100% remanufactured drive clutch assembly ensures lasting performance
Armatures and commutators are 100% load tested
New motor lead terminals and solenoid contacts are used to ensure maximum connectivity
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

$254.99

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

from

$373.99

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: 1-800-228-9672

Upgrade your 2019 GMC Sierra 3500 HD with Top-Quality Alternators and Starters

When it comes to maintaining or upgrading your 2019 GMC Sierra 3500 HD, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your GMC or enhancing its overall performance, Alternators and Starters are key to keeping your Sierra 3500 HD functioning at its best. At Advance Auto Parts, we offer a wide selection of 16 Alternators and Starters for the 2019 GMC Sierra 3500 HD, designed to meet your needs without breaking the bank. From Starter Part replacements to Alternator 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 2019 GMC Sierra 3500 HD at great prices. Our Alternators and Starters inventory for this model ranges from just $5.79 to $567.99, with an average price of $262.03. Our 16 Alternators and Starters in stock come from 7 trusted brands, so you’re sure to find the right part for your 2019 GMC Sierra 3500 HD without overspending.

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 2019 GMC Sierra 3500 HD is always ready to roll. We’re committed to providing you with everything you need to keep your Sierra 3500 HD in top shape, all in one place. Start shopping confidently below for your 2019 GMC Sierra 3500 HD!

Best-Selling Starter Parts for 2019 GMC Sierra 3500 HDs

Enhance the driving experience in your GMC with 7 quality Starter Part components, starting at $5.79.

show more show less

from

$223.99

from

$5.79

This starter bolt is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:

Direct replacement – this starter bolt matches the fit and function of the factory part on specified years, makes and models
Ideal solution – this bolt 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

$281.99

from

$385.99

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: 1-800-228-9672

from

$373.99

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: 1-800-228-9672

from

$178.99

GM Genuine Parts Starter Motors are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These starters consist of a powerful motor coupled to the starter drive pinion. The starter drive pinion engages the engine flywheel to crank the engine. 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:

Newly manufactured as an exact replacement for your GM vehicle’s original starter
Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
GM regularly updates production and service part designs to integrate new materials and technologies

from

$52.99

WIRE CONNECTOR

Most Popular 2019 GMC Sierra 3500 HD Alternator Parts

Customize your GMC with 6 Alternator Parts products like Alternators, all priced under $567.99.

show more show less

from

$431.99

Product Features:

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

$439.99

Product Features:

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

$567.99

Product Features:

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

$508.99

Engineered to meet or exceed OEM specifications for a perfect fit and hassle-free installation.
Voltage regulator protection – load dump protected against transient voltage spikes avoiding potential battery damage. Low saturation voltage results in lower heat dissipation. Fully compliant in communication with ECU.
High power rectifier assembly is designed with higher power open junction press fit diodes to keep the units running cool.
Each unit includes a printed copy of the test results so you know exactly what to expect from our parts right from the first time they power on.
Built with a focus on efficiency, the alternator’s low saturation voltage reduces energy loss, contributing to improved overall performance and reliability.

Alternator: New, 150 Amps, 2 Year Limited Warranty

from

$417.99

GM Genuine Parts Alternators are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These alternators provide power to the vehicle’s electrical systems and charge the battery while the engine is running. 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:

Newly manufactured as an exact replacement for your GM vehicle’s original alternator
Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
GM regularly updates production and service part designs to integrate new materials and technologies

from

$359.99

The Bosch Premium Alternator delivers exceptional performance and reliability, making it an ideal choice for demanding automotive needs. With a robust 150-amp output and a clockwise rotation direction, this alternator is full-load tested to ensure compliance with Bosch’s strict performance specifications. Each unit is 100% factory tested and remanufactured – not rebuilt – guaranteeing consistent quality and long-lasting performance. Built with high-quality materials and advanced technology, it is designed to withstand the rigors of daily use while ensuring dependable power delivery for your vehicle’s electrical systems.

Product Features:

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.
Designed to deliver dependable power for your vehicle’s electrical systems, ensuring consistent performance under demanding conditions.
Engineered with a robust 150-amp output to meet the needs of modern automotive applications.

Top Picks for 2019 GMC Sierra 3500 HD Ignition Lock Parts

Upgrade GMC Sierra 3500 HDs with top-quality Ignition Lock Parts parts, including 1 OEM and aftermarket selections for your 2019 model.

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$152.99

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.
100% end-of-line tested to ensure confidence and product reliability, every time.

In-Demand Alternator Pulley Parts for 2019 GMC Sierra 3500 HDs

Select from 2 premium Alternator Pulley Parts parts for your 2019 GMC Sierra 3500 HD, with prices ranging from $128.99 to $135.99.

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$128.99

Litens Automotive is the original equipment supplier for the 2014-2018 Chevrolet Corvette, Silverado,Tahoe, Suburban / GMC Yukon, Sierra with 4.3/5.3/6.2L . This replacement pulley is also designed and produced by Litens and is exact in all form, fit, and performance characteristics as the original equipment part (with the exception of not having the car manufacturer’s logo or part number applied to the part). Decoupling pulleys are engine specific and should never be interchanged with other types of pulley technology. The Litens OAD type pulley is designed to free-wheel in one direction and, with an internal spring and damping device, softly engage in the opposite direction. The OAD is designed as a sacrificial part of the front-end accessory drive system, protecting other belt driven component as well as the alternator. The correct decoupler pulley ensures smooth, quiet performance as well as increasing vehicle gas mileage. Under normal driving conditions, the original pulley will require replacement in approx. 70,000 – 90,000 miles. Litens is the world’s largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.

Product Features:

Designed and engineered by Litens Automotive. The inventor of the “OAD” (overrunning alternator decoupler).
Patented original equipment design
Protects the alternator and other front-end accessory drive components
New cap included with the OAD
Installation instructions included

from

$135.99

Designed and engineered by Litens Automotive. The inventor of the “OAD” (overrunning alternator decoupler).
Patented original equipment design
Protects the alternator and other front-end accessory drive components
New cap included with the OAD
Installation instructions included

FAQs for 2019 GMC Sierra 3500 HD Alternators and Starters

Which Alternators and Starters are best-sellers for 2019 GMC Sierra 3500 HDs?

Out of 16 Alternators and Starters that fit 2019 GMC Sierra 3500 HDs, the following parts are the top sellers:

Alternator: Remanufactured, 150 Amps, Limited Lifetime Warranty (11945966) – $439.99
Starter Mounting Bolt, Type 1 Long (11839849) – $5.79
Overrunning Alternator Decoupling (OAD) Pulley – Original Equipment Quality (11562007) – $128.99

What’s the price range for 2019 GMC Sierra 3500 HD Alternators and Starters?

Alternators and Starter prices for the 2019 GMC Sierra 3500 HD start at $5.79 and go up to $567.99 for the most premium parts.

What’s the average price of a Alternators and Starter for a 2019 GMC Sierra 3500 HD?

The average price for Alternators and Starters for the 2019 GMC Sierra 3500 HD is $262.03. 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 GMC Sierra 3500 HD model years?

Yes, we currently carry Alternators and Starters for 17 model years of GMC Sierra 3500 HDs between 2007 and 2025. Alternators and Starters are bought most frequently for the following model years: 2022, 2021, 2020, 2018, 2017, 2016, 2015, 2014, and 2013.

What are the cheapest Alternators and Starters for my 2019 GMC Sierra 3500 HD?

The cheapest 2019 GMC Sierra 3500 HD Alternators and Starters we carry in stock are:

Starter Mounting Bolt, Type 1 Long (11839849) – $5.79
WIRE CONNECTOR (50130729) – $52.99
Overrunning Alternator Decoupling (OAD) Pulley – Original Equipment Quality (11562007) – $128.99
Overrunning Alternator Decoupling (OAD) Pulley – Original Equipment Quality (11561989) – $135.99
Ignition Lock Cylinder (12574339) – $152.99

What are the top-rated Alternators and Starters that fit the 2019 GMC Sierra 3500 HD?

Out of 16 reviews by customers, our 2019 GMC Sierra 3500 HD Alternators and Starters have an average customer rating of . These are some of the highest-rated Alternators and Starter types for the 2019 GMC Sierra 3500 HD and their top-rated products:

Starter Parts
- Starter: Remanufactured, Limited Lifetime Warranty (11242342) – $223.99
Alternator Parts
- Starter: Remanufactured, Limited Lifetime Warranty (11242342) – $223.99

What types of Alternators and Starters do you sell for my 2019 GMC Sierra 3500 HD?

As of 11/2/25, these are some of the most in-demand types of Alternators and Starters for a 2019 GMC Sierra 3500 HD:

Can I get help with 2019 GMC Sierra 3500 HD 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 GMC Alternators and Starters and more.

What is your return policy for GMC Sierra 3500 HD Alternators and Starters?

Advance Auto Parts keeps returns simple. For new GMC Sierra 3500 HD Alternators and Starters and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.

2019 GMC Sierra 3500 HD Alternators and Starters

Carquest Premium – Alternator: Remanufactured, 220 Amps, Limited Lifetime Warranty (Part No.42095A)

WAI – Denso Hairpin Ir/If 150 Amp/12 Volt, Cw, 6-Groove Pulley, Limited Lifetime Warranty (Part No.14007N)

Carquest Premium – Alternator: Remanufactured, 125 Amps, Limited Lifetime Warranty (Part No.11234A)

Carquest Professional – Alternator: New, 160 Amps, Limited Lifetime Warranty (Part No.8301AN)

Dorman – Ignition Lock Cylinder: Three Keys Included, OE Fix; with Onboard Programming (Part No.924-796)

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

Dorman – Ignition Lock Cylinder: Un-Coded (Part No.924-716)

Carquest Premium – Ignition Lock Cylinder (Part No.CSC2679)

Dorman – Help – Starter Mounting Bolt, Type 1 Long (Part No.72004)

GM Genuine Parts – WIRE CONNECTOR (Part No.PT2971)

Litens – Overrunning Alternator Decoupling (OAD) Pulley – Original Equipment Quality (Part No.920111A)

Litens – Overrunning Alternator Decoupling (OAD) Pulley – Original Equipment Quality (Part No.920031A)

Litens – Overrunning Alternator Decoupling (OAD) Pulley – Original Equipment Quality (Part No.920030A)

Litens – Overrunning Alternator Decoupling (OAD) Pulley – Original Equipment Quality (Part No.920112A)

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

Bosch – Starter: Remanufactured (Part No.SR8629X)

Carquest Premium – Starter: Remanufactured, Limited Lifetime Warranty (Part No.19140S)

Carquest HD Electrical – Starter: New (Part No.72-6942N)

Carquest HD Electrical – Starter: New (Part No.72-17801N)

GM Genuine Parts – Starter: Remanufactured (Part No.323-1637)

Carquest HD Electrical – Starter: New (Part No.72-6757N)

Carquest Professional – Starter: New, Limited Lifetime Warranty (Part No.6942SN)

Carquest Professional – Starter: New, Limited Lifetime Warranty (Part No.17801SN)

Carquest Premium – Starter: Remanufactured, Limited Lifetime Warranty (Part No.6971S)

ACDelco – Starter: Remanufactured (Part No.336-1932A)

Carquest Premium – Starter: Remanufactured, Limited Lifetime Warranty (Part No.17801S)

Bosch – Starter: Remanufactured (Part No.SR8651X)

Carquest Professional – Starter: New, Limited Lifetime Warranty (Part No.6971SN)

Carquest Premium – Starter: Remanufactured, Limited Lifetime Warranty (Part No.19140S)

Dorman – Help – Starter Mounting Bolt, Type 1 Long (Part No.72004)

Carquest Premium – Starter: Remanufactured, Limited Lifetime Warranty (Part No.6971S)

Carquest Professional – Starter: New, Limited Lifetime Warranty (Part No.19140SN)

Carquest Professional – Starter: New, Limited Lifetime Warranty (Part No.6971SN)

GM Genuine Parts – Starter: New (Part No.12637617)

GM Genuine Parts – WIRE CONNECTOR (Part No.PT2971)

Carquest Premium – Alternator: Remanufactured, 150 Amps, Limited Lifetime Warranty (Part No.11785A)

Carquest Premium – Alternator: Remanufactured, 150 Amps, Limited Lifetime Warranty (Part No.42074A)

Carquest Premium – Alternator: Remanufactured, 220 Amps, Limited Lifetime Warranty (Part No.10353A)

WAI – Denso Hairpin Ir/If 150 Amp/12 Volt, Cw, 6-Groove Pulley, Limited Lifetime Warranty (Part No.14007N)

GM Genuine Parts – Alternator: New, 150 Amps, 2 Year Limited Warranty (Part No.84143543)

Bosch – Alternator: Remanufactured, 150 Amps, Limited Lifetime Warranty (Part No.AL8866X)

Carquest Premium – Ignition Lock Cylinder (Part No.CSC2679)

Litens – Overrunning Alternator Decoupling (OAD) Pulley – Original Equipment Quality (Part No.920030A)

Litens – Overrunning Alternator Decoupling (OAD) Pulley – Original Equipment Quality (Part No.920031A)