See also:

ELECTRONIC KEY ALREADY KNOWN
If the vehicle has the keyless access system, this message displays if you try to match a transmitter that has already been learned. See the keyless access information for Remote Keyless E ...

Transmission Messages
SERVICE TRANSMISSION This message displays if there is a problem with the transmission. See your dealer. SHIFT DENIED This message displays when using the Driver Shift Control (DSC) and a ...

GM Mobility Reimbursement Program (U.S. and Canada)
This program is available to qualified applicants for cost reimbursement of eligible aftermarket adaptive equipment required for the vehicle, such as hand controls or a wheelchair/ scooter lift ...