What Changed

SLT and AT4 trim levels dropped for double cab.

Comparison to Prior Model

2021 GMC Sierra 1500 Double Cab 2020 GMC Sierra 1500 Double Cab
2021 GMC Sierra 1500 Double Cab 2020 GMC Sierra 1500 Double Cab
Price Range ($) $33,900 - $48,590 $33,500 - $53,495
Length (in) 231.7 231.7
Wheelbase (in) 147.4 147.4
Width (in) 81.2 81.2
Height (in) 75.6 75.6
Track (in)
Exterior Volume (cu. ft.)
Curb Weight (lbs.) 4700-5400 4700-5400
Legroom Total (in.) 79.7 79.7
Passenger Volume (cu. ft.) 125.8 125.8
Cargo Volume (cu. ft.) 71.7 71.7
Driven Wheels
  • RWD
  • AWD
  • RWD
  • AWD
Engines
  • 2.7l I4 T (310-bhp)
  • 3.0l I6 T D (277-bhp)
  • 4.3l V6 (285-bhp)
  • 5.3l V8 (355-bhp)
  • 2.7l I4 T (310-bhp)
  • 3.0l I6 T D (277-bhp)
  • 4.3l V6 (285-bhp)
  • 5.3l V8 (355-bhp)
  • 6.2l V8 (420-bhp)
Transmissions A10, A6, A8 A10, A6, A8
City MPG 15-23 15-23
Highway MPG 20-30 19-30
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