Torque Lock
Torque lock is when the weight of the vehicle puts too much force on the parking pawl in the transmission. This happens when parking on a hill and shifting the transmission into P (Park) is not done properly and then it is difficult to shift out of P (Park). To prevent torque lock, set the parking brake and then shift into P (Park). To find out how, see "Shifting Into P (Park)" listed previously.
If torque lock does occur, your vehicle may need to be pushed uphill by another vehicle to relieve the parking pawl pressure, so you can shift out of P (Park).
If you are towing a trailer and parking on a hill, see Driving Characteristics and Towing Tips.
See also:
Weight of the Trailer Tongue
The tongue load (A) of any trailer is an important weight to measure because
it affects the total gross weight of the vehicle. The Gross Vehicle Weight
(GVW) includes the curb weight of the vehicle, ...
Power Reclining Seatbacks
To adjust a power seatback, if available:
- Tilt the top of the control rearward to recline.
- Tilt the top of the control forward to raise. ...
Using Voice Commands
During a Planned Route
Cancel Route
1. Push . System responds:
“OnStar ready,” then a tone.
Say “Cancel route.” System
responds: “Would you like to
cancel route directions to your
destination?”.
2. Say “Yes.” Syst ...






