Ignition Transmission Lock Check
While parked, and with the parking brake set, try to turn the ignition to LOCK/OFF in each shift lever position.
• The ignition should turn to LOCK/OFF only when the shift lever is in P (Park).
• The ignition key should come out only in LOCK/OFF.
Contact your dealer if service is required.
See also:
Dolly Towing (Front-Wheel-Drive Vehicles Only)
To tow a front-wheel-drive vehicle from the front with two wheels on the ground:
1. Put the front wheels on a dolly.
2. Move the shift lever to P (Park).
3. Set the parking brake.
4. Clamp the s ...
Tow/Haul Mode
(Tow/Haul): The vehicle may have a Tow/Haul mode.
The button is located on the instrument panel under the climate controls.
Push the button to activate the system. Push it again to deactivate the s ...
Potential Issues
Some OnStar services are disabled after five days. OnStar cannot perform Remote Door Unlock or Stolen Vehicle Assistance after the vehicle has been off continuously for five days. After five days, OnS ...