GMC Sierra Specs — Dimensions & Weight by Generation

Quick answer

The 2026 GMC Sierra is 235.4″ long, 81.5″ wide and 78″ tall on a 146.5″ wheelbase, and weighs 5,761 lb. At 19.6 ft it squeezes into a 20-foot garage with under a foot to spare.

Every GMC Sierra generation, measured

The biggest change in length came in 2003, when the new car was 7.1″ longer than the 1999–2002 one. The biggest change in weight came in 2011: 447 lb heavier than before. The current car, sold since 2020, is 0.8″ longer and 90 lb lighter than the 2011–2019 one.

FIG.01·GMC Sierra dimensions by generation
Generation	Length	Width	Height	Wheelbase	Curb weight
1994–1998	218.1″	76.8″	71.3″	141.3″	4,206 lb
1999–2002	222.4″	78.3″	74″	143.7″	5,304 lb
2003	229.5″	79.5″	74″	148.4″	5,558 lb
2004–2005	224.8″	79.5″	76.4″	143.7″	5,507 lb
2006–2008	229.5″	79.5″	76.4″	148.4″	5,494 lb
2009–2010	224.4″	79.9″	78″	143.7″	5,719 lb
2011–2019	234.6″	79.9″	78″	153.9″	6,166 lb
2020–2026	235.4″	81.9″	79.9″	147.2″	6,076 lb

ROWS 8·SOURCE NHTSA vPIC / Transport Canada

Sierra year by year

FIG.02·GMC Sierra dimensions by model year
Model year	Length	Width	Wheelbase	Curb weight	Body styles
2026	235.4″	81.5″	146.5″	5,761 lb	23
2025	235.4″	81.5″	146.5″	5,761 lb	23
2024	235.4″	81.5″	146.5″	5,761 lb	23
2023	235.8″	81.5″	146.5″	5,631 lb	22
2022	235.8″	81.5″	146.5″	5,631 lb	22
2021	235.8″	81.5″	146.5″	5,631 lb	22
2020	235.8″	81.5″	146.5″	5,631 lb	22
2019	237″	83.5″	152″	6,036 lb	35
2018	233.5″	82.7″	149.2″	5,983 lb	39
2017	233.5″	82.7″	149.2″	5,983 lb	39
2016	233.5″	82.7″	149.2″	5,983 lb	39
2015	233.5″	82.7″	149.2″	5,983 lb	39
2014	231.5″	82.7″	147.6″	5,880 lb	31
2013	232.7″	82.7″	148.8″	6,021 lb	39
2012	232.7″	82.7″	148.8″	6,032 lb	39
2011	232.7″	82.7″	148.8″	6,032 lb	39
2010	232.3″	82.3″	148.4″	5,675 lb	33
2009	232.3″	82.3″	148.4″	5,675 lb	33
2008	231.9″	82.3″	148″	5,487 lb	32
2007	231.9″	81.9″	148″	5,393 lb	36
2006	231.9″	81.9″	148″	5,393 lb	36
2005	230.7″	82.3″	147.2″	5,357 lb	34
2004	230.7″	82.7″	147.2″	5,386 lb	33
2003	231.1″	82.7″	147.2″	5,399 lb	32
2002	226″	82.7″	144.5″	5,143 lb	31
2001	226″	80.7″	144.5″	5,258 lb	30
2000	225.2″	79.9″	144.5″	5,057 lb	37
1999	224″	80.3″	143.3″	5,318 lb	35
1998	222″	79.9″	142.1″	4,982 lb	27
1997	222″	79.9″	142.1″	4,954 lb	27
1996	222″	79.9″	142.1″	4,848 lb	27
1995	221.7″	79.9″	142.1″	4,713 lb	28
1994	220.1″	79.9″	140.6″	4,328 lb	30

ROWS 33·SOURCE Transport Canada vehicle specifications

Sierra on the used market

In 6,724 Sierra listings we have collected since June 2026, the 2011–2019 car is the most common: 2,786 of them (41%), at an average asking price of $21,078. The current 2020–2026 car averages $49,161. ForCar visitors have decoded 1,231 Sierra VINs; the most checked model years are 2026, 2021 and 2024.

FIG.05·GMC Sierra generations on the used market
Generation	Listings	Share	Average asking price	Average mileage
2020–2026	2,253	34%	$49,161	60,530 mi
2011–2019	2,786	41%	$21,078	140,242 mi
2009–2010	191	3%	$10,781	173,647 mi
2006–2008	520	8%	$13,179	204,173 mi
2004–2005	302	4%	$10,846	170,828 mi
2003	101	2%	$10,136	171,812 mi
1999–2002	329	5%	$8,275	174,949 mi
1994–1998	185	3%	$7,576	192,481 mi
Other years	57	1%	$7,193	202,978 mi

ROWS 9·SOURCE ForCar, US used-car listings collected since June 2026

Will a Sierra fit

FIG.02·GMC Sierra — will it fit
Space	Typical size	This car	Verdict
Single garage	20 ft deep	19.6 ft	Too long — door will not close
Street parking space	18 ft	19.6 ft	Overhangs — expect a tight squeeze
Standard parking bay width	8.5 ft wide	6.8 ft	Room to open doors both sides

ROWS 3·SOURCE ForCar, computed from vehicle dimensions

Against cars of the same length

Among the 71 cars within 10″ of its length, the Sierra is wider than 90%.

FIG.03·GMC Sierra against similar-sized cars
Measure	This car	Typical of 71 cars within 10″ of its length	Difference
Width	81.5″	79.9″	+1.6″
Wheelbase	146.5″	144.5″	+2.0″
Curb weight	5,761 lb	5,655 lb	+106 lb

ROWS 3·SOURCE ForCar, computed across vehicles of similar length

Sierra against its rivals

FIG.04·GMC Sierra against its rivals
Model	Model year	Length	Width	Curb weight
GMC Sierra (this car)	2026	235.4″	81.5″	5,761 lb
Ford F-150	2026	228″	80.7″	5,240 lb
Chevrolet Silverado	2026	235.4″	81.5″	5,891 lb
Toyota Tundra	2026	241.3″	79.9″	5,556 lb

ROWS 4·SOURCE NHTSA vPIC / Transport Canada; rivals: same EPA class and body, most searched

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Everything on the GMC Sierra

Recalls419 campaigns Fuel economy26 mpg best Reliability4.0/5 Common problems6,907 complaints Check a VINAgainst this exact build Used prices15,008 listings What yours is worthValue by year & mileage Insurance costEstimated per year Window stickerOriginal Monroney label Decode a VINWhat each character means About this car1989–2026

Frequently asked questions

Is the 2026 Sierra bigger than the 2025?

No. The 2026 and 2025 Sierra are the same size and weight.

Which is bigger, the Sierra or the Ford F-150?

The 2026 Ford F-150 is 7.4″ shorter and 521 lb lighter than the 2026 Sierra.

How much does a used Sierra cost?

In our listings collected since June 2026, the average asking price runs from $7,576 for the 1994–1998 car to $49,161 for the 2020–2026 one, across 6,724 listings.

Dimensions from NHTSA vPIC and Transport Canada vehicle records, manufacturer-declared for 33 Sierra model years, 1994 to 2026. Metric values converted to inches and pounds; generation boundaries are estimated from changes in size (how we measure). Last updated Nov 2026. — ForCar Reviewed by Denis Kataev, founder of ForCar.

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