GMC Sierra

Sierra is a 4-door, up to 6-passenger full size pickup.

See also:

Hill Start Assist (HSA)
This vehicle has a Hill Start Assist (HSA) feature, which may be useful when the vehicle is stopped on a grade. This feature is designed to prevent the vehicle from rolling, either forward or rear ...

Range Selection Mode (Allison® Transmission or Hydra-Matic® 6-Speed Transmission)
The vehicle may have a Range Selection Mode. The Range Selection Mode helps control the vehicle's transmission and vehicle speed while driving down hill or towing a trailer by letting you select a d ...

Installing the Third Row Seats
To reinstall a third row seat: 1. Before installing the seat the seatback must be folded forward. See “Folding the Seatback” earlier in this section. The seats must be placed in the proper locat ...