Vehicle Overview
GM says the Sierra 1500 Hybrid's gasoline V-8 and electric motors team up for an overall mileage improvement compared with the regular Sierra. The Sierra Hybrid is only available as a rear- or four-wheel-drive crew cab, both with a 6.0-liter V-8 and two electric transmission motors. Standard features include a trailering package, locking rear differential and side curtain airbags.
See also:
Customer Assistance Offices (U.S. and Canada)
GMC encourages customers to call the toll-free number for assistance.
However, if a customer wishes to write or e-mail GMC, the letter should be addressed to:
United States
GMC Customer Assistance ...
Returning the Seat to the Seating Position
To return the second row seat to its normal seating position:
1. Remove objects on the floor behind the second row seat or in the seat tracks on the floor.
2. Pull the seatback rearward until it is ...
Window Lockout
(Window Lockout): This feature prevents
the rear passenger windows from operating, except from the driver position.
Press to activate the rear window
lockout switch. The LED light comes on whe ...