2012 GMC Canyon Owner's Manual - Page 200

9-28 Driving and Operating When you are ready to drive, move the shift lever out of P (Park) before you release the parking brake. If torque lock does occur, you may need to have another vehicle push yours a little uphill to take some of the pressure from the parking pawl in the transmission, so you can pull the shift lever out of P (Park). The shift lock control system is designed to do the following: . regular brake pedal down. Then, see if you can move the shift lever away from P (Park) without first pulling it toward you. If you can, the shift lever was not fully locked into P (Park). Prevent the ignition key from being removed unless the shift lever is in P (Park). Prevent movement of the shift lever out of P (Park), unless the ignition is in ON/RUN and the brake pedal is applied. . Torque Lock (Automatic Transmission) If you are parking on a hill and you do not shift the transmission into P (Park) properly, the weight of the vehicle may put too much force on the parking pawl in the transmission. You may find it difficult to pull the shift lever out of P (Park). This is called torque lock. To prevent torque lock, set the parking brake and then shift into P (Park) properly before you leave the driver seat. To find out how, see "Shifting Into Park (Automatic Transmission)" in this section. Shifting out of Park (Automatic Transmission) The vehicle has an automatic transmission shift lock control system. You have to fully apply the brake pedal before you can shift from P (Park) when the ignition is ON/RUN. See Automatic Transmission on page 9‑31. The shift lock control system is always functional except in the case of a dead battery or low voltage (less than 9 V) battery. If the vehicle has an uncharged battery or a battery with low voltage, try charging or jump starting the battery. See Jump Starting on page 10‑81 for more information.