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VEHICLE GUIDE
2026 GMC Sierra 2500hd AT4
A PICKUP with gas powertrain and 4WD availability.
2026 GMC Sierra 2500hd is a PICKUP with gas powertrain. 2026 GMC Sierra 2500hd offers 4WD; the exact drivetrain can change efficiency or capability, so the version matters.
7TRIMS
GasPOWERTRAINS
$50,700LOWEST PUBLISHED MSRP
17HIGHEST DOCUMENTED COMBINED MPG
2026 model-year guide7TRIMS
GasPOWERTRAINS
$50,700LOWEST PUBLISHED MSRP
17HIGHEST DOCUMENTED COMBINED MPG
TRIM DETAIL
AT4
See the defining facts for this trim, then choose an exact configuration.
- AT4 comes with gas and 4WD.
BodyTruck
PowertrainGas
Drivetrain4WD
CONFIGURATION
Choose the exact configuration
Specs and capability can change below the trim level.