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2010 GMC

Sierra

SLE, Pickup, RWD, 8 cyl, 6.6 L, Diesel

GMC Sierra: best and worst years
2010 GMC Sierra

Closest available photo (2011 model year); you're viewing the 2010.

2011 photoErmellCC BY-SA 4.0Wikimedia Commons

Overview

Body
Heavy Duty Pickup TruckNHTSA vPIC, from NHTSA vPIC, last updated 10/15/2026
Drivetrain
Rear-Wheel DriveNHTSA vPIC, from NHTSA vPIC, last updated 10/15/2026
Powertrain
DieselNHTSA vPIC, from NHTSA vPIC, last updated 10/15/2026
Fuel
DieselNHTSA vPIC, from NHTSA vPIC, last updated 10/15/2026

Engine & performance

Cyl
8NHTSA vPIC, from NHTSA vPIC, last updated 10/15/2026

Efficiency

Fuel economy
Not EPA-ratedMost heavy-duty trucks and vans (over 8,500 lb gross vehicle weight rating) are exempt from EPA fuel economy testing, so no official MPG exists for this vehicle.

Dimensions & capacity

Doors
4NHTSA vPIC, from NHTSA vPIC, last updated 10/13/2026
Cab
Extra/Super/Quad/Double/King/ExtendedNHTSA vPIC, from NHTSA vPIC, last updated 10/13/2026
GVWR class
Class 2E (6,001 to 7,000 lb)NHTSA vPIC, from NHTSA vPIC, last updated 10/13/2026

Warranty manufacturer terms, by make

Basic
3 yr / 36k mi
Powertrain
5 yr / 60k mi
Roadside assistance
5 yr / 60k mi
Maintenance
1 yr / 12k mi
EV battery
8 yr / 100k mi

Information is gathered on a best-effort basis from public sources, may be incomplete or out of date, and is not purchasing or financial advice. Verify with the manufacturer or dealer before buying.