GMC parts
GMC Sierra Parts
Get help finding the right part for your GMC Sierra — every generation, engine, and configuration. Call with your VIN and we will take it from there.
- OEM & aftermarket options
- VIN-based fitment help
- Ships to all 50 states
The GMC Sierra comes as the light-duty Sierra 1500 and the heavy-duty 2500HD and 3500HD, with several cab styles, bed lengths, and engines. Sierra trucks share much of their engineering with the Chevrolet Silverado, while Denali and AT4 trims add their own styling and equipment.
Rock Sales Parts helps Sierra owners across the United States source replacement parts. Call with your VIN or your year, model, cab, bed, engine, and trim.
Know your Sierra generation
Parts often change between generations — and sometimes within one. Use this as a guide; your VIN confirms the exact details.
| Model years | What to know |
|---|---|
| 1999–2006 | GMT800 generation; 2007 “Classic” models continued this design. |
| 2007–2013 | GMT900 light-duty generation; heavy-duty models continued through 2014. |
| 2014–2018 | Light-duty generation, carried over as the 2019 Sierra 1500 Limited. |
| 2019 and newer | Current light-duty platform, refreshed for 2022 (with a 2022 Sierra 1500 Limited carryover). Heavy-duty models were redesigned for 2020. |
Model-year ranges are general guidance for U.S. models and can vary by configuration.
Part categories
Common replacement categories for the GMC Sierra
Wear-and-maintenance categories that apply to most trucks like yours. Need something else? Just ask.
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Brake Parts
Brake pads · Brake rotors · Brake calipers and caliper brackets -
Suspension Parts
Struts and complete strut assemblies · Shock absorbers · Coil springs and leaf springs -
Engine Parts
Complete engines and long blocks · Cylinder heads and valve covers · Timing belts, chains, tensioners, and guides -
Transmission & Drivetrain Parts
Automatic and manual transmissions · Transmission control modules and solenoids · Torque converters -
Body & Exterior Parts
Front and rear bumpers and bumper covers · Fenders and fender liners · Hoods and hood hinges -
Lighting Parts
Headlight assemblies · Tail light assemblies · Fog lights and fog light bezels -
Electrical Parts
Alternators · Starters · Batteries, where available -
Cooling System Parts
Radiators · Water pumps · Thermostats and thermostat housings
FAQ
GMC Sierra parts: common questions
Are Sierra and Silverado parts the same?
Many mechanical parts are shared, but grilles, bumpers, lighting, and body panels usually differ. Tell us which truck you have.
What is a Sierra 1500 Limited?
It is a carryover version of the previous-generation truck sold alongside the redesigned model (2019 and 2022). It uses different parts from the newer truck of the same year.
Find your GMC Sierra part today
Read us your VIN or tell us your year, cab, engine, and trim. We will help identify the right part and let you know what we can find.