New for 2011
The Sierra Hybrid gets GM's OnStar 9.0 telematics system that GM says provides better voice recognition. GM also said they have worked to cut down on the amount of wind noise occupants hear.
See also:
Service Publications Ordering Information
Service Manuals
Service Manuals have the diagnosis and repair information on the engines, transmission, axle, suspension, brakes, electrical, steering, body, etc.
Service Bulletins
Service Bulletin ...
Power Seat Adjustment
A. Seat Adjustment Control
B. Seatback Control
C. Lumbar Control
To adjust a power seat, if equipped:
• Move the seat forward or rearward by sliding the control (A) forward or rearward.
• R ...
Electric Power Steering (2.4L L4 Engine)
If the engine stalls while driving, the power steering assist system will continue
to operate until you are able to stop the vehicle.
If power steering assist is lost due to a system malfunction, t ...





