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 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).
See also:
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 ...
Jump Starting
For more information about the vehicle battery, see Battery on page 10‑31.
If the vehicle is a hybrid, see the hybrid supplement for more information.
If the vehicle's battery (or batteries) h ...
Rear Seats
The rear seat has adjustable headrests in the outboard seating positions.
The height of the headrest can be adjusted. Pull the headrest up to raise it. To lower the headrest, push down on the headres ...