Vehicle and Power Issues
OnStar services require a vehicle electrical system, wireless service, and GPS satellite technologies to be available and operating for features to function properly. These systems may not operate if the battery is discharged or disconnected.
See also:
Gate Operator and Canadian Programming
If you have questions or need help programming the Universal Home Remote System, call 1-800-355-3515 or go to www.homelink.com.
Canadian radio-frequency laws require transmitter signals to time out o ...
Interior
The Sierra showcases two different interior designs. Work Truck and SLE
models are more utility-minded, with large controls and door handles that can be
operated while wearing gloves. The SLT offe ...
Power Liftgate
On vehicles with a power liftgate, the vehicle must be in P (Park) to operate. The taillamps flash and a chime sounds when the power liftgate moves.
WARNING
You or others could be injured if caught ...