Trim Report
GMC Sierra AT42026
Includes:15SIPU4WD|AT4
$18,600
Starting From
9,750
Active Listings
—
Avg Mileage
Sourced from 9,750 active dealer listings as of
Min $18,600
Max $132,879
From $18,600
Fresh
AT4 Market Overview
All Trims Combined
From$27,365
$27K–$133K
50,696 listings25,014 avg miles
AT4
From$18,600
9,750 listings|$19K–$133K
AT4X
From$35,491
3,929 listings|$35K–$109K
Denali
From$4,500
11,676 listings|$5K–$104K
Denali Ultimate
From$44,601
3,546 listings|$45K–$101K
Elevation
From$13,500
18,101 listings|$14K–$97K
Limited
From$12,459
31 listings|$12K–$30K
Pro
From$12,980
6,540 listings|$13K–$69K
SL
From$2,709
45 listings|$3K–$21K
SLE
From$1,650
4,915 listings|$2K–$70K
SLT
From$1,500
15,792 listings|$2K–$140K
W/T
From$3,000
99 listings|$3K–$25K
2026 GMC Sierra AT4 Pricing
Price Trend
Building price history...
Plenty of options. Let us narrow it down.
9,750 active listings means opportunity, but also overwhelm. Set your criteria and we'll surface the best matches.
Set up smart alertsFrom $5/week
Where to Find GMC Sierra AT4
Location data for all 2026 GMC Sierra trims combined
39States
28%in top 3
13% of the market sits in Texas, though listings span 39 states. Expand your search and you'll find more options at better prices.
TXTexas
5,69813%
MIMichigan
3,5048%
FLFlorida
2,9237%
MOMissouri
2,2435%
TNTennessee
1,6354%
CACalifornia
1,5914%
PAPennsylvania
1,5094%
OKOklahoma
1,3313%
GAGeorgia
1,3213%
OHOhio
1,3173%
NCNorth Carolina
1,1853%
AZArizona
1,1703%
ILIllinois
1,0342%
DEDelaware
9392%
MNMinnesota
9332%
COColorado
9332%
NHNew Hampshire
9272%
ARArkansas
9232%
INIndiana
8162%
DCWashington DC
7562%
LA714
AL697
WA668
WI662
UT605
NY591
MD590
NE512
OR496
RI406
NV388
ID370
MA360
ME327
IA259
NJ252
VT237
VA231
SC
GMC Sierra Fuel Economy
EPA fuel economy data for all 2026 GMC Sierra trims
15–68mpg combined
·14-75city
·16-61hwy
·$1,100-$3,850/yr
Fuel economy for the 2026 GMC Sierra ranges from 15 to 68 MPG combined across 20 setups. The table below breaks it down by trim so you know exactly what you're signing up for.
By Trim
Sierra EV 20-mod battery, 11kW 15-mode charger - Automatic (A1)
68mpg
4-Wheel DriveEV
75 city61 hwy~$1,100/yr10/10 Clean
Sierra EV 14-mod battery, 11kW 15-mode charger - Automatic (A1)
67mpg
4-Wheel DriveEV
74 city60 hwy~$1,150/yr10/10 Clean
Sierra EV 20-mod battery, 19kW 15-mode charger - Automatic (A1)
64mpg
4-Wheel DriveEV
69 city59 hwy~$1,200/yr10/10 Clean
Sierra 2WD - Automatic 10-spd
25mpg
3.0L 6-cyl Turbo · Rear-Wheel DriveDiesel
23 city28 hwy~$2,250/yr4/10 Average
Sierra 4WD - Automatic 10-spd
24mpg
3.0L 6-cyl Turbo · 4-Wheel DriveDiesel
22 city26 hwy~$2,300/yr4/10 Average
Sierra 2WD - Automatic 8-spd
20mpg
2.7L 4-cyl Turbo · Rear-Wheel Drive
18 city21 hwy~$2,200/yr4/10 Average
Sierra 2WD with Sport Mode - Automatic 8-spd
19mpg
2.7L 4-cyl Turbo · Rear-Wheel Drive
17 city21 hwy~$2,300/yr4/10 Average
Sierra 4WD AT4X - Automatic 10-spd
19mpg
3.0L 6-cyl Turbo · 4-Wheel DriveDiesel
19 city20 hwy~$2,950/yr3/10 Poor
Sierra 2WD with Sport Mode - Automatic 10-spd
18mpg
5.3L 8-cyl · Rear-Wheel Drive
16 city21 hwy~$2,450/yr3/10 Poor
Sierra 4WD - Automatic 8-spd
18mpg
2.7L 4-cyl Turbo · 4-Wheel Drive
17 city20 hwy~$2,450/yr3/10 Poor
Sierra 2WD - Automatic 10-spd
17mpg
5.3L 8-cyl · Rear-Wheel Drive
16 city20 hwy~$2,600/yr3/10 Poor
Sierra 4WD (Flex Fuel) - Automatic 10-spd
17mpg
5.3L 8-cyl · 4-Wheel Drive
15 city19 hwy~$2,600/yr3/10 Poor
Sierra 4WD with Sport Mode - Automatic 10-spd
17mpg
5.3L 8-cyl · 4-Wheel Drive
15 city19 hwy~$2,600/yr3/10 Poor
Sierra 4WD with Sport Mode - Automatic 8-spd
17mpg
2.7L 4-cyl Turbo · 4-Wheel Drive
17 city18 hwy~$2,600/yr3/10 Poor
Sierra 4WD - Automatic 10-spd
16mpg
6.2L 8-cyl · 4-Wheel Drive
15 city19 hwy~$3,600/yr3/10 Poor
Sierra 4WD - Automatic 10-spd
16mpg
5.3L 8-cyl · 4-Wheel Drive
15 city18 hwy~$2,750/yr3/10 Poor
Sierra Cab Chassis 2WD - Automatic 10-spd
16mpg
5.3L 8-cyl · Rear-Wheel Drive
15 city18 hwy~$2,750/yr3/10 Poor
Sierra 4WD AT4X - Automatic 10-spd
15mpg
6.2L 8-cyl · 4-Wheel Drive
14 city16 hwy~$3,850/yr2/10 Poor
Sierra Cab Chassis 4WD - Automatic 10-spd
15mpg
5.3L 8-cyl · 4-Wheel Drive
14 city16 hwy~$2,900/yr2/10 Poor
Sierra Mud Terrain Tires 4WD - Automatic 10-spd
15mpg
6.2L 8-cyl · 4-Wheel Drive
14 city17 hwy~$3,850/yr2/10 Poor
Source: U.S. Environmental Protection Agency (EPA)
Is the AT4 Worth It?
Common questions about the 2026 GMC Sierra AT4
How does the AT4 compare to other GMC Sierra trims?
with 9,750 listings tracked, the AT4 sits in a specific spot in the 2026 GMC Sierra lineup. Compare pricing across all trims on the 2026 GMC Sierra page.
What should I know about maintaining the 2026 GMC Sierra AT4?
Budget for standard AT4 maintenance plus any trim-specific items. Review the known issues on the model year page for areas to inspect before purchasing.
What are the best years for the GMC Sierra AT4?
The best model year for the GMC Sierra AT4 comes down to the price-to-mileage ratio. Compare all years on the GMC Sierra overview.
Get GMC Sierra market updates
We'll email you when prices shift or new data comes in for the 2026 GMC Sierra.
No spam. We'll only reach out about GMC Sierra features.