2008 Chevrolet Aveo Owner's Manual - Page 106

Torque Lock (Automatic Transmission) If you are parking on a hill and you do not shift your transmission into PARK (P) 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 PARK (P). This is called "torque lock." To prevent torque lock, set the parking brake and then shift into PARK (P) properly before you leave the driver's seat. To find out how, see Shifting Into PARK (P) (Automatic Transmission) on page 2-27. When you are ready to drive, move the shift lever out of PARK (P) 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 PARK (P). Shifting Out of PARK (P) Your automatic transmission vehicle has an automatic transmission shift-lock control system. You have to fully apply your regular brakes before you can shift from PARK (P) when the ignition is turned to ON/RUN. See Automatic Transmission Operation on page 2-21. If you cannot shift out of PARK (P) while holding the brake pedal down, try this: 1. Set the parking brake. 2. Turn the ignition off and remove the key. 3. Remove the cover over the shift-lock release slot by prying it off using a small, flat object. The shift-lock release slot is located at the top of the shift lever. 2-28