What Year Chevy Truck Tailgates Interchange (By Generation)
Chevy and GMC truck tailgates interchange within the same body-style generation, but not across generations: 1973-1987 square-body tailgates swap with each other, 1988-1998 OBS tailgates swap with each other, 1999-2007 “Classic” (GMT800) tailgates swap with each other, 2007.5-2013 (GMT900) with each other, and 2014-2018 (K2XX) with each other — a 2019+ (T1XX) tailgate is a different generation and won’t bolt onto an older truck without modification. Below is the full generation-by-generation chart plus answers to the specific year-to-year questions people ask most.
Chevy/GMC Truck Tailgate Interchange Chart by Generation
Tailgates are matched to a truck’s bed width, taillight cutouts, and latch/hinge mounting points, all of which change when GM moves to a new body-style generation. Within a generation, tailgates almost always interchange across the 1500/2500/3500 lineup and between Chevy Silverado and GMC Sierra badging (the panel is identical; only the emblem differs). Across generations, they don’t — even if the truck “looks similar” from the side.
| Generation | Model Years | Interchange Notes |
|---|---|---|
| Square Body (Rounded Line) | 1973–1987 | Tailgates interchange across the full range; minor emblem/trim differences by year, panel and mounting are the same. |
| OBS (Old Body Style, GMT400) | 1988–1998 | Interchanges within this range only; different taillight cutout than the square-body generation before it. |
| Classic / GMT800 | 1999–2007 | Interchanges across 1999-2007, including 2007 “Classic” carryover trucks built alongside the new GMT900. Shared across 1500/2500/3500. |
| New Body Style (GMT900) | 2007.5–2013 | Interchanges within this range (HD models carried into 2014). Different tailgate than both Classic and K2XX. |
| K2XX | 2014–2018 (2019 for HD) | Interchanges within this range. Does not fit the redesigned 2019+ light-duty trucks. |
| T1XX (Current) | 2019–present | Current generation. Multi-Flex Tailgate available from 2021 Silverado 1500 onward (2022 for HD); does not interchange with any prior generation. |
Will a [Year] Tailgate Fit My [Year] Truck? Answering the Most Common Questions
- Does a 1999 tailgate fit a 2007 truck? Only if the 2007 truck is a “Classic” (GMT800 carryover) model, not the redesigned 2007.5 GMT900. Check your build date/VIN before buying, since GM sold both body styles under the 2007 model year.
- Will a 2019 Silverado tailgate fit a 2015 Silverado 1500? No. 2019 is the new T1XX generation; 2015 is K2XX. Different mounting points and taillight cutouts — it won’t bolt on without major modification.
- Are 1973-1987 Silverado tailgates interchangeable? Yes, the full square-body run interchanges, which is why this generation’s tailgates are some of the easiest to source used.
- Will a 2005 tailgate fit a 2000 Silverado? Yes — both are GMT800 (1999-2007 Classic), so the tailgate should bolt straight on.
- Is a 1500 GMC tailgate the same size as a 3500 GMC tailgate? Within the same generation, yes — the 1500, 2500, and 3500 share the same tailgate panel and mounting hardware.
- Does a 2008 GMC Sierra 2500 tailgate fit a 1500? Yes, both are GMT900, so the tailgate is shared across the lineup that year.
- What are the differences between a 2010 and a 2001 Silverado tailgate? They’re from two different generations (GMT900 vs. GMT800/Classic) with different taillight cutouts and mounting hole patterns — they won’t directly interchange.
- What year tailgates will interchange with a 2008 Trailblazer? The Trailblazer is an SUV with a liftgate, not a pickup tailgate — a completely different part with its own fitment rules, not covered by this pickup-truck interchange chart.
Understanding Chevy Truck Tailgates
Beyond the generation match, a few tailgate styles exist across the Chevy/GMC lineup, and knowing which one your truck has narrows the search further.
Types Of Chevy Truck Tailgates
- Standard tailgate: A single hinged panel that drops down flat — used across nearly every generation as the base configuration.
- Multi-Flex / MultiPro tailgate: GM’s multi-position tailgate (2021+ Chevy, 2019+ GMC Sierra Denali as MultiPro) that folds into up to 7 configurations, including a built-in step and load-stop.
- Power tailgate: Motorized lock/release available on higher trims from the K2XX generation onward.
Factors That Affect Tailgate Interchangeability
Beyond the generation cutoffs above, a few specific details determine whether a used tailgate will actually bolt on and function correctly:
- Taillight cutout shape: Each generation redesigns the taillights, and the tailgate’s cutout must match — this is the single most common reason a “similar-looking” tailgate won’t fit.
- Camera/sensor prep: Trucks with a factory backup camera or trailer-hitch camera need a tailgate pre-drilled and wired for it; a tailgate from a lower trim without that option will need modification.
- Bed width and hinge spacing: Dually (dual rear wheel) trucks and standard-bed trucks can have different tailgate widths even within the same generation — always confirm bed width, not just model year.
Identifying a Compatible Tailgate for Your Truck
- Decode your VIN to confirm the exact generation, model year, and trim — don’t rely on visual similarity alone.
- Cross-reference the generation chart above to narrow down which years are a direct fit.
- Check whether your truck has a backup camera, spoiler-mount light, or trailer camera prep that the replacement tailgate must also have.
- Confirm bed width (standard vs. dually) before buying, since this affects tailgate width independent of model year.
- Buy from a seller who can confirm the donor vehicle’s exact year and trim, and ask for the VIN if possible.
Common Fitment Issues and How to Fix Them
- Tailgate not aligning with the bed: Check that hinge bolts are tightened evenly on both sides; loosen and reposition slightly if the gap is uneven.
- Tailgate rattling while driving: Usually a worn or loose latch mechanism — inspect and replace if the striker no longer holds it snug.
- Taillight gap or missing cutout: A clear sign the tailgate is from the wrong generation, even if it physically bolted on.
- Backup camera wiring doesn’t line up: The donor tailgate likely came from a truck without camera prep — you’ll need a tailgate specifically wired for it, or run new wiring yourself.
Best Tailgate Install Tool Pick
DEWALT Mechanics Tool Set (192-Piece)
Covers every socket and wrench size needed for hinge bolts, latch hardware, and striker adjustments across all Chevy/GMC generations in this chart.
- Best for: a DIY tailgate swap without borrowing tools
- Why we picked it: covers both SAE and metric hardware GM has used across generations
- Main drawback: more sockets than most one-time swaps actually need
Compare more tailgate-install options
 Option 1 CRAFTSMAN 1/2" Torque Wrench
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 Option 2 DNA Motoring 2-Ton Jack & Stands Kit
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 Option 3 Rust-Oleum Stops Rust Primer Spray
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Frequently Asked Questions
Are truck tailgates interchangeable?
Within the same generation, yes — Chevy and GMC tailgates interchange across the 1500/2500/3500 lineup and between Chevy and GMC badging. Across generations, no — the taillight cutouts and mounting points change with each redesign.
What year did Chevy redesign the Silverado?
The Silverado has been redesigned several times: 1999 (GMT800), 2007.5 (GMT900), 2014 (K2XX), and most recently 2019 (T1XX, the current generation).
What are the generations of Chevy trucks?
Major generations include the Square Body/Rounded Line (1973-1987), OBS (1988-1998), GMT800/Classic (1999-2007), GMT900 (2007.5-2013), K2XX (2014-2018), and T1XX (2019-present).
What year did the Multi-Flex tailgate come out?
The Multi-Flex Tailgate debuted on the 2021 Chevy Silverado 1500 across all trims, followed by the 2022 Silverado HD (2500HD/3500HD). GMC’s equivalent, called MultiPro, arrived earlier on the 2019 Sierra Denali.
Will a tailgate from one generation fit a different generation with modification?
Sometimes, but it usually requires re-drilling mounting holes, adapting the latch striker, and accepting a taillight gap or mismatch — most owners find it’s cheaper and cleaner to source a tailgate from the correct generation instead.
Conclusion
The fastest way to find a compatible Chevy or GMC tailgate is to match your truck’s generation first — square body, OBS, GMT800/Classic, GMT900, K2XX, or T1XX — then confirm bed width and camera prep before buying. For the same interchange logic applied to frames, see our guide on which Chevy truck frames are the same, or check square-body grille differences by year if you’re restoring a 1973-1987 truck. If you drive a Ford instead, our Ford truck bed interchange guide uses the same generation-matching approach.
