GMC · Mid-size pickup
GMC Canyon bed dimensions & sizes by year
Buying a tonneau cover and not sure it'll fit? Pick your model year to get the exact bed length of your Canyon in inches — plus the covers built for it. No guesswork, no wrong-size returns.
Find your bed size in 10 seconds
The GMC Canyon has come in 4 bed lengths across 2004–2026:
Select your year above for the exact bed length that fits your truck.
Not sure which bed you have?
Two Canyons from the same year can have different beds depending on cab. Don't trust the badge — measure it. It takes 30 seconds and saves a return.
- 1
Close the tailgate.
- 2
Put 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
Match that number to a bed length above — covers are sold by category (5.5 ft, 6.5 ft, 8 ft…), so round to the nearest one.
Canyon bed sizes & specs, year by year
Canyon · 3rd gen
| Bed | Length | Inches | Cabs | |
|---|---|---|---|---|
| 5.2 ft (short box) | 5'2" | 61.7" | Crew Cab | Covers → |
- Cab styles
- Crew Cab
- Drivetrain
- RWD, 4WD
- Max towing
- 7,700 lb
- Max payload
- 1,640 lb
- MSRP from
- $36,900 (launch)
Engines (1)
- 2.7L TurboMax I4 (L3B) 310 hp · 430 lb-ft · Gas
Redesigned 2023. Crew Cab / short box only - single bed+cab config (5'2" / 61.7"). One engine: 2.7L TurboMax (310 hp/430; base may be tuned to 237 hp). MultiPro tailgate plus Canyon MultiStow storage. Max tow 7,700 lb.
Canyon · 2nd gen
| Bed | Length | Inches | Cabs | |
|---|---|---|---|---|
| 5.2 ft (short box) | 5'2" | 61.7" | Crew Cab | Covers → |
| 6.2 ft (long box) | 6'2" | 74" | Extended Cab, Crew Cab | Covers → |
- Cab styles
- Extended Cab, Crew Cab
- Drivetrain
- RWD, 4WD
- Max towing
- 7,700 lb
- Max payload
- 1,620 lb
Engines (3)
- 2.5L I4 (LCV) 200 hp · 191 lb-ft · Gas
- 3.6L V6 (LGZ) 308 hp · 275 lb-ft · Gas
- 2.8L Duramax Turbo-Diesel I4 (LWN) 181 hp · 369 lb-ft · Diesel
Reintroduced 2015 after 2013-2014 gap (GMT31XX, shared with 2nd-gen Colorado). Extended Cab = 6'2" long box only; Crew Cab = 5'2" or 6'2". 2.8L Duramax 2016-2022. 3.6L V6 was 305hp/269 in 2015-16, 308hp/275 from 2017.
Canyon · 1st gen (GMT355)
| Bed | Length | Inches | Cabs | |
|---|---|---|---|---|
| 5 ft (short box) | 5'1" | 61.1" | Crew Cab | Covers → |
| 6 ft (long box) | 6'1" | 72.8" | Regular Cab, Extended Cab | Covers → |
- Cab styles
- Regular Cab, Extended Cab, Crew Cab
- Drivetrain
- RWD, 4WD
- Max towing
- 6,000 lb
- Max payload
- 1,693 lb
Engines (5)
- 2.8L Vortec I4 (LK5) 175 hp · 185 lb-ft · Gas
- 3.5L Vortec I5 (L52) 220 hp · 225 lb-ft · Gas
- 2.9L Vortec I4 (LLV, 2007+) 185 hp · 190 lb-ft · Gas
- 3.7L Vortec I5 (LLR, 2007+) 242 hp · 242 lb-ft · Gas
- 5.3L V8 (LH8, 2009-2012) 300 hp · 320 lb-ft · Gas
Shared GMT355 platform with Chevy Colorado/Isuzu i-Series. Regular/Extended Cab = 6 ft box; Crew Cab = 5 ft box. 2007 refresh swapped to 2.9L I4/3.7L I5; 5.3L V8 added 2009 on Ext/Crew only (rare). No Canyon 2013-2014. Exact inches vary - flagged verify.
What fits in a Canyon bed
Bed length in inches only means something once you know what it swallows. Here's how the loads people actually haul line up against every Canyon bed on record.
| Load | Needs | 5.2 ft (short box) · 61.7" | 6.2 ft (long box) · 74" | 5 ft (short box) · 61.1" | 6 ft (long box) · 72.8" |
|---|---|---|---|---|---|
| 4×8 ft sheet of plywood or drywall | 96" | Won't fit | Won't fit | Won't fit | Won't fit |
| 8 ft 2×4s and trim lumber | 96" | Won't fit | Won't fit | Won't fit | Won't fit |
| Full-size dirt bike | 85" | Won't fit | Tailgate down | Won't fit | Tailgate down |
| Adult mountain bike, wheels on | 70" | Tailgate down | Fits, tailgate up | Tailgate down | Fits, tailgate up |
| Two-person truck bed tent | 60" | Fits, tailgate up | Fits, tailgate up | Fits, tailgate up | Fits, tailgate up |
| Standard 48×40 in shipping pallet | 48" | Fits, tailgate up | Fits, tailgate up | Fits, tailgate up | Fits, tailgate up |
"Tailgate down" assumes the roughly 18 inches a dropped tailgate adds on a typical pickup — measure yours before you count on it, and strap anything that overhangs. Width is the other half of the answer: a 48-inch sheet only lies flat on the bed floor when the wheel wells are more than 48 inches apart, otherwise it rides on top of the arches. For cubic feet of mulch, soil or gravel, run your dimensions through the bed volume calculator.
Volume is one limit, weight is the other. Check your Canyon's real payload → · what it can actually tow →
More Canyon specs
Bed size is one number among several. These carry the rest of the reference data for this truck specifically.
Other trucks with a Canyon-size bed
Cross-shopping, or checking whether a cover you already own could move to another truck? These pickups come in a bed within two inches of a Canyon bed.
- Chevrolet Colorado
- Chevrolet Silverado EV
- Ford Ranger
- GMC Hummer EV Pickup
- Honda Ridgeline
- Jeep Gladiator
- Nissan Frontier
- Tesla Cybertruck
Same length still isn't the same cover — rail height and bed-rail profile differ by truck. Confirm with the fitment checker before you buy or swap.
Tonneau covers that fit the Canyon
Not sure a cover will fit? Run the Canyon fitment checker → for your bed length, the cover types that fit, and any Canyon-specific gotchas.
Hands-on Canyon cover reviews are landing soon. In the meantime, browse vetted, correctly-sized options for your bed:
Canyon bed size — frequently asked
What bed sizes does the GMC Canyon come in?
The GMC Canyon has been offered with 4 bed lengths: 5.2 ft (short box) (61.7"), 6.2 ft (long box) (74"), 5 ft (short box) (61.1") and 6 ft (long box) (72.8"). The exact bed on your truck depends on its model year and cab — choose your year above to see which covers fit.
How do I measure my Canyon bed length?
Measure the inside floor of the bed, from the bulkhead (the wall behind the cab) to the inside of the closed tailgate. Round to the nearest standard size — tonneau covers are sold by bed-length category (e.g. 5.5 ft, 6.5 ft, 8 ft), not the exact inch.
What bed size is the newest Canyon?
The current Canyon (2023–present) comes with 5.2 ft (short box) (61.7").
Will a tonneau cover from an older Canyon fit a newer one?
Not necessarily. Covers are matched to a specific generation and bed length, and both the bed length and the rail design can change between generations. Always match your exact model year and bed size before buying — the year-by-year table below shows where the Canyon changed.
Will a 4×8 sheet of plywood fit in a Canyon?
No. Even the longest Canyon bed (74") plus a dropped tailgate falls short of 96 inches, so an 8 ft sheet will overhang and needs a flag and proper tie-downs. Width matters too: a 48-inch sheet only lies flat on the floor if the gap between the wheel wells is wider than 48 inches — on mid-size trucks it rides on top of the wheel arches instead.
What's the difference between the short and long bed Canyon?
Across the model's history the beds run from 61.1" to 74" — a difference of 13 inches of usable floor. The longer bed hauls more and takes longer sheet goods, the shorter bed is easier to park and turn. They take different tonneau covers, so the bed you have decides which cover part number you order.
How much can a Canyon tow?
Properly equipped, the Canyon has been rated up to 7,700 lb across the generations on this page, with a maximum payload of about 1,693 lb. Those are best-case figures for a specific engine, cab and axle combination — your truck's door-jamb sticker and owner's manual are the numbers that count. Run them through the towing and payload calculators to see what's actually left for a trailer once passengers and gear are on board.
What cab configurations does the Canyon come in?
The Canyon has been offered as Crew Cab, Extended Cab and Regular Cab. Cab choice is what usually decides bed length — a bigger cab on the same wheelbase means a shorter bed, which is why two trucks from the same year can need different covers.
Does a tonneau cover on a Canyon improve gas mileage?
A little, and only at highway speed. Independent testing puts the gain on a typical pickup at roughly 1–2%, which is real but small — on most Canyon trucks that's a few dollars a tank, not a payback plan. Buy a cover for the dry, locked, secure bed; treat the mileage as a bonus.
