2026 GMC Sierra Cab Chassis

Special Purpose Vehicle 2WD Regular
GMC Sierra Cab Chassis 2026
16MPG Combined
2 Trims
← 2025 2026
Updated February 27, 2026

The 2026 GMC Sierra Cab Chassis is a Special Purpose Vehicle 2WD that delivers 15–16 combined MPG depending on trim. Here’s everything you need to know about this vehicle, from fuel economy to safety ratings.

2026 GMC Sierra Cab Chassis Specifications

SpecValue
Combined MPG15–16 combined MPG depending on trim
City MPG15
Highway MPG18
Body StyleSpecial Purpose Vehicle 2WD
Fuel TypeRegular
DriveRWD
Available Trims2

Available Trims

TrimMPG (City/Hwy/Combined)EngineTransmission
Auto15/18/165.3L 8cylAutomatic 10-spd
Auto14/16/155.3L 8cylAutomatic 10-spd

Annual Fuel Cost

Based on EPA estimates, the 2026 GMC Sierra Cab Chassis costs approximately $2,850 per year in fuel. This assumes 15,000 miles driven annually and current fuel prices.

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