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2015-2019 GMC Sierra 2500HD & 3500HD OEM & Aftermarket Parts
Looking for parts for your 2015, 2016, 2017, 2018, or 2019 GMC Sierra 2500HD or 3500HD? Texas Truck Parts stocks factory OEM take-off parts pulled from used 2015-2019 K2XX-generation Sierra HD pickups — typically low-mileage trucks — plus a wide range of aftermarket replacement parts from leading manufacturers. We carry parts that fit every trim — Sierra, SLE, SLT, Denali, and All Terrain HD — across the lineup. All 2015-2019 K2XX HD body panels carry over consistently across the generation, so cross-year fitment is reliable. Whether you need a factory bumper after a fender-bender, a replacement tailgate, OEM tail lights, or a complete truck bed after collision damage, we have it for the K2XX GMC Sierra HD at well-below-dealer pricing. Free shipping to the lower 48 states from our Sugar Land, TX warehouse.
Shop 2015-2019 GMC Sierra HD Parts by Category
Front Bumpers (OEM)
Factory chrome and painted GMC front bumpers for 2015-2019 K2XX Sierra HD. Cross-fits 2500HD and 3500HD within the same body style.
Shop Front Bumpers →Front Replacement Bumpers
Heavy-duty aftermarket front bumpers from Tough Country, Ranch Hand, Fab Fours, Rough Country, One Source and more. Off-road and winch-ready designs for 2015-2019 Sierra HD.
Shop Front Replacement →Rear Bumpers (OEM)
Factory rear bumpers — painted, chromed, and CornerStep variants. These cross-fit BOTH 2015-2019 GMC Sierra HD and Chevy Silverado HD.
Shop Rear Bumpers →Rear Replacement Bumpers
Aftermarket rear bumpers with hitch receivers, sensor cutouts, and step pads. Compatible with BOTH 2015-2019 GMC Sierra HD and Chevy Silverado HD.
Shop Rear Replacement →Tail Lights
OEM Halogen tail lights for 2015-2019 Sierra HD. Driver-side, passenger-side, or matched pairs. SRW and DRW variants available.
Shop Tail Lights →Tailgates
Factory OEM tailgates for 2015-2019 Sierra 2500HD/3500HD. Basic manual-handle style only. Cross-fits across the full K2XX generation.
Shop Tailgates →Truck Beds
OEM truck beds. 2500HD: 6′9″ SRW or 8′ long-bed SRW. 3500HD: 6′9″ SRW, 8′ SRW, or 8′ DRW (dually). Chassis-cab variants ship without beds.
Shop Truck Beds →Fitment Compatibility — GMC Sierra HD 2015-2019
All parts on this page fit the K2XX HD platform (2015-2019 Sierra 2500HD & 3500HD). All body panels carry over consistently across this generation.
| Part Category | Sierra 2500HD | Sierra 3500HD |
|---|---|---|
| Tailgates (OEM) | Basic manual-handle only. Cross-fits 2015-2019. | Same as 2500HD — cross-fits. |
| Tail Lights (OEM) | Halogen only. | Halogen only. SRW and DRW housings available. |
| Truck Beds (OEM) | 6′9″ SRW or 8′ long-bed SRW. | 6′9″ SRW, 8′ SRW, or 8′ DRW (dually). Chassis-cab no bed. |
| Front Bumper (OEM) | Cross-fits 2015-2019 K2XX HD. | Same — cross-fits 2015-2019. |
| Front Replacement Bumpers (Aftermarket) | Cross-fits 2015-2019 Sierra HD. | Same — cross-fits 2015-2019. |
| Rear Bumper (OEM) | Cross-fits 2015-2019; ALSO cross-fits Chevy Silverado HD same year. | Same — GMC + Chevy compatible. |
| Rear Replacement Bumpers (Aftermarket) | Cross-fits 2015-2019 Sierra HD AND Chevy Silverado HD. | Same — GMC + Chevy compatible. |
K2XX generation note: All body panels carry over across the full 2015-2019 model years — cross-year fitment is reliable. The next-generation T1XX HD (2020+) is a different body and parts do not interchange — if you need 2020+ parts, see our 2020-2026 GMC Sierra HD page.
Why OEM Take-Off Parts?
OEM take-off parts are authentic GMC factory parts pulled from used trucks — not aftermarket copies. Because they come off low-mileage pickups, they cost a fraction of what GMC dealers charge for the same brand-new replacement. Take-offs are ideal for:
- Collision repair — match your truck’s original factory finish exactly
- Trim upgrades — install a Denali or High Country tailgate on an XLT
- Replacing damaged panels — rust, dents, scratches
- Resale prep — restore your truck to factory-fresh before selling
For situations where take-off inventory isn’t in stock for your specific configuration, we also carry aftermarket replacement parts from the most-trusted brands in the industry — built tougher than factory for off-road and heavy-duty use.
Why Texas Truck Parts & Accessories
- Sugar Land, TX warehouse — serving Houston and shipping nationwide
- Free shipping to the lower 48 states — LTL freight for bumpers, hotshot trailer delivery for truck beds
- Financing available through Acima, Progressive, and SNAP — from approximately $55/month
- Local pickup welcome at our Sugar Land warehouse
- Fitment help by phone or email — call 832-706-8091 or email info@texastruckparts.shop with your VIN and we’ll confirm compatibility before you order
Looking for Other GMC Sierra HD or Chevy Silverado HD Years?
We also stock parts for the current-generation GMC Sierra HD (T1XX, 2020-2026) and for the related Chevy Silverado HD lineup:
Frequently Asked Questions
Will a 2015 GMC Sierra 2500HD part fit a 2018 or 2019 Sierra 3500HD?
Yes for almost all parts. The K2XX HD generation (2015-2019) shares body panels across all years and between 2500HD/3500HD. Tailgates, beds (note 3500HD adds the 8′ DRW option), tail lights, front bumpers, and rear bumpers all cross-fit. Confirm SRW vs DRW configuration for tail lights and beds.
What is the difference between OEM take-off parts and aftermarket parts?
OEM take-off parts are authentic GM/GMC factory components removed from a brand-new or low-mileage Sierra HD, usually during an owner upgrade. Same fit, finish, and quality as the parts that came on your truck from the factory — at a significant discount versus dealership pricing. Aftermarket parts are produced by third-party manufacturers (Tough Country, Ranch Hand, Fab Fours, Rough Country, One Source, etc.) and typically cost less, with build quality varying by brand. We stock both.
Are GMC Sierra HD parts compatible with Chevy Silverado HD?
Some are. The rear bumper (OEM and aftermarket) cross-fits between GMC Sierra HD and Chevy Silverado HD for the 2015-2019 generation. Beds and most chassis hardware share the K2XX HD platform too. However, the exterior — front bumpers, grilles, headlights, tailgate badging, and tail lights — is brand-specific. If you drive a Silverado HD, see our 2015-2019 Chevy Silverado HD page.
Are 2015-2019 parts compatible with 2020+ Sierra HD?
No. The 2020 model year was a complete redesign on the T1XX HD platform. Body panels, bumpers, lights, and beds do not interchange. For 2020+ parts, see our 2020-2026 GMC Sierra HD page.
How do I confirm a part fits before I buy?
Call 832-706-8091 or email info@texastruckparts.shop with your truck year, sub-model, trim, and SRW/DRW configuration. We verify your VIN against our fitment database before checkout.
Need help finding the right part for your 2015-2019 GMC Sierra HD?
Call 832-706-8091 or email info@texastruckparts.shop with your VIN, message us via the contact page, or browse the full inventory by category above.
