Auto Guide
2026 GMC Sierra 1500
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Review and specifications

2026 GMC Sierra 1500

The Sierra is essentially a Chevrolet Silverado. Power delivery is smooth and responsive, and fuel economy is 17 mpg overall for the 5.3-liter, V8 engine crew-cab four-wheel-drive version. The ride is stiff and snappy, but the cabin is very quiet. Handling is sound and secure. The infotainment system is easy to use. Rear-seat room in crew-cab versions is immense, but the high step-in requires a climb. Helpful options include a power liftgate that can be opened using the key fob, a tailgate that can be configured into a workbench, and power running boards can shift back to help reach the bed. The luxurious Denali version has a 6.2-liter V8 mated to a 10-speed automatic. Blind spot warning and automatic emergency braking are optional on higher trims. Updates for 2020 include an available 3.0-liter turbodiesel six-cylinder engine paired with a 10-speed automatic transmission. The diesel pulls strongly, feels refined, and returns 23 mpg overall. Other changes for for 2020 saw suspension tweaks improving the ride, and the availability of adaptive cruise control. FCW, AEB with pedestrian detection, and BSW became standard for 2022.

Market value
$48,600
Fuel
Conventional
Transmission
Automatic
Seats
6
View listings Find dealers
Model year 2026
Owner rating Not rated
Reliability 2/5
Data updated December 4, 2025

At a glance

Model data

Overview

Powertrain
Conventional
Body style
extended cab
Drive type
4WD
Transmission
Automatic, 10-speed
Category
Full-sized pickup trucks
Generation began
2019

Pricing

Current retail median
$48,600
Retail value range
$38,225 - $77,500
Original MSRP range
$38,300 - $84,400
Trade-in range
$35,285 - $71,950

Ratings

Road test score
74/100
Reliability
2/5

Fuel economy

EPA city
15 MPG
EPA highway
19 MPG
EPA combined
17 MPG
Tested city
11 MPG
Tested highway
24 MPG
Tested overall
17 MPG
Annual fuel cost
$2,325
Cruising range
400 miles

Road tests

0-30 mph
2.4 sec
0-60 mph
6.9 sec
60-0 mph braking
136 ft
Avoidance speed
49.5 mph
Test status
Test Completed

Dimensions

Length
232 in
Width
81 in
Height
76 in
Wheelbase
147 in
Weight
5,130 lb
Maximum load
1,940 lb
Towing capacity
12,100 lb

Interior

Seating
6 people
Front head room
8 in
Front leg room
43.5 in
Rear head room
6 in
Rear leg room
33.5 in

Environmental impact

Air pollution score
6/10
Greenhouse gas score
3/10
SmartWay
No

Brand context

About GMC

GMCs SUVs and trucks are versions of Chevrolets with different badges, different styling, and some extra luxury features. Overall, though, GMCs don’t often stand out, equipment-wise, from their mechanical siblings. Like many Chevrolets, GMC vehicles’ interiors are spacious and comfortable thanks to large exterior dimensions. Its SUVs range from compact models like the Terrain up to the three-row Yukon XL, which can carry up to nine passengers and their luggage—no small feat. GMC’s pickup truck line ranges from midsized models like the Canyon and the popular Sierra 1500, and goes all the way up to commercial-grade “dually” trucks with four rear wheels. The brand has also begun introducing EVs, including an all-electric pickup and the enormous, heavy Hummer EV, which is sold as either a pickup or SUV. Both used and new GMC models rank below average in Consumer Reports’ ratings for predicted reliability.

Vehicle ID: 38084 Updated: December 4, 2025

Values may vary by trim, options, location, and market conditions.

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