Free tool
Will a tonneau cover fit my truck?
Pick your year, make and model. We'll show your exact bed length, which cover types fit, and the truck-specific gotchas — RamBox, rail systems, bed liners — before you spend a cent. No guessing, no wrong-size returns.
Your truck
GMC Sierra 1500
GMC Hummer EV Pickup
Yes — with a couple of things to check
Hummer EV Pickup bed length — match a cover to this:
This truck offers a powered factory tonneau
Electric trucks like this often come with — or offer — a powered, lockable tonneau from the factory. Aftermarket cover choice is currently limited and replacing a powered unit is a specialist job.
What to do: If you have the factory powered cover, weigh keeping it. Aftermarket manual covers exist for some EV trucks but the range is small — verify a model-specific fit.
Your truck may have the MultiPro tailgate
The MultiPro tailgate splits or opens in extra positions. Tonneau covers seal to the tailgate's top edge and almost all are compatible — the tailgate's middle gate or steps still work with the cover closed.
What to do: No special cover needed. Just confirm the listing says it clears your tailgate (nearly all do) before buying.
Cover types that fit your Hummer EV Pickup
Soft roll-up
FitsVinyl cover on rails that rolls to the cab in seconds.
- Security: low
- Weather: medium
- Price: $
Lowest cost and the most open-bed access; light weather protection.
Hard roll-up
FitsInterlocking aluminium slats that roll up; far more secure than vinyl.
- Security: medium
- Weather: high
- Price: $$
Security and weather without losing roll-back bed access.
Hard folding
FitsThree or four rigid panels that fold forward in stages.
- Security: high
- Weather: high
- Price: $$ to $$$
The all-rounder: strong security, sealed weather, flexible access.
Tri-fold
FitsThree panels (soft or hard) that fold to the cab in one move.
- Security: low to medium
- Weather: medium to high
- Price: $ to $$
Fast value: easy DIY fit and quick fold-up for most owners.
Retractable
FitsSlats that retract into a canister at the bulkhead; lockable at any point.
- Security: high
- Weather: high
- Price: $$$
Premium security with stop-anywhere access; costs bed length and money.
Hinged / one-piece
FitsA single solid lid that hinges up at the cab, like a car boot.
- Security: high
- Weather: high
- Price: $$ to $$$
Sleekest, most secure look on shorter beds; poor for big/tall loads.
What actually decides whether a tonneau cover fits
Fitment isn't about the brand — it's about your bed. Get these right and almost any quality cover will fit. Get one wrong and you'll be packing a return.
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1
Bed length
The one that actually matters. Covers are sold by bed-length category — 5.5 ft, 6.5 ft, 8 ft and so on. Two of the same truck and year can have different beds depending on cab, so measure rather than trust the badge.
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2
RamBox & built-in storage
Ram's RamBox boxes (and similar built-in storage) make the bed opening wider, so they need a cover made specifically for them. A standard cover will not fit.
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3
Factory rail & track systems
Utili-track, BoxLink, Toyota deck rails, Jeep Trail Rail and the like sit in the bed rail where most covers clamp. Nearly all covers still fit, but the cover may sit over the track.
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4
Multi-position tailgates
MultiPro, Multi-Flex, Multifunction and Pro Access tailgates work fine under a closed cover — but confirm the listing clears yours.
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5
Bed liners
Spray-in liners are no problem. A drop-in liner with a lip over the bed rail can stop a clamp-on cover sealing flat.
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6
Composite beds
Ridgeline, Santa Cruz and the newest Tundra use composite beds with a slightly different rail shape. Covers still clamp on — match the listing to your exact model and year.
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7
Powered factory covers
EV trucks like the Cybertruck and R1T come with or offer a powered tonneau from the factory. Aftermarket choice is small, so check for a model-specific fit before buying.
How to measure your truck bed
Covers are sold by bed length, and two of the same truck can have different beds depending on cab. Don't trust the badge — measure. 30 seconds now saves a return later.
- 1
Close the tailgate.
- 2
Lay a tape measure on the bed floor against the bulkhead — the wall behind the cab.
- 3
Measure straight back to the inside of the closed tailgate.
- 4
Round to the nearest category (5.5 ft, 6.5 ft, 8 ft…). That's the size to buy.
Tonneau cover fitment — frequently asked
How do I know what tonneau cover fits my truck?
Start with your truck's exact bed length, because covers are sold by bed-length category. Then account for anything built into your bed — RamBox storage, a drop-in liner, a factory rail system or a powered tailgate. This checker does both: pick your year, make and model and it returns your bed length plus the cover types and any fitment warnings for that truck.
Do tonneau covers fit all trucks?
Almost. Every mainstream pickup has tonneau covers made for it, but the right one depends on your bed length and a few truck-specific features. RamBox beds and EV trucks with factory powered covers are the main cases that need a specific version rather than a standard one.
What size tonneau cover do I need?
Match your bed length to the cover's size category — 5.5 ft, 6.5 ft or 8 ft are the common ones. Measure the inside of the bed from the bulkhead to the inside of the closed tailgate and round to the nearest category. Pick your truck above to see your exact bed length in inches.
Will a tonneau cover work with a bed liner?
A spray-in liner is fine — it barely changes the rail. A drop-in (plastic) liner can be a problem if its lip wraps over the top of the bed rail, because that is where most covers clamp. Under-rail drop-in liners are usually fine.
Does a multifunction or split tailgate stop a tonneau cover fitting?
No. Multi-position tailgates like GMC's MultiPro, Chevy's Multi-Flex, Ram's Multifunction and Ford's Pro Access seal under a tonneau and still work with the cover closed. Just confirm the cover you choose lists your truck and year.
