1994 GMC Suburban Owner's Manual - Page 85

5 . Remove the key and take it with you. If you can walk away from your vehicle with the ignition key in your hand, your vehicle is in " P ' (Park). Leaving Your Vehicle With the Engine Running (Automatic Transmission ModelsOnly) If you have to leave your vehicle with the engine running,be sure your vehicle is in " P ' (Park) and your parking brake is firmly set before you leave it. If you have four-wheel drive with a manual transfer caseshift lever, be sure that the transfer case is in a drive gear- not in "N" (Neutral). After you've moved the shift lever into the "P" (Park) position, hold the regular brake pedal down. Then, see if you can move the shift lever away from " P ' (Park) without first pulling toward you. If you can, it means that it the shift lever wasn't fully locked into "P' (Park). Torque Lock (Automatic Transmission) If you are parking on a hill and you don't shift your 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's seat. To find out how, see "Shifting Into'P' (Park)" in the Index. 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 transmission, so you can pull the shift lever out of " P ' (Park). 2-29