1996 GMC Sonoma Owner's Manual - Page 183

rking on Hills should not park your vehicle, with a trailer attached, on a hill. If something goes wrong, your rig could start to move. People can be injured, and both your vehicle and the trailer can be damaged. I O U really But if you ever have to park your rig on a hill, here's how to do it: 1. Apply your regular brakes, but don't shift int.0 PARK (P) yet, or into gear for a manual transmission. When parking uphill, turn your wheels away from the curb. When parking downhill, turn your wheels into the curb. 2. Have someone place chocks under the trailer wheels. 3. When the wheel chocks are in place, release the regular brakes until the chocks absorb the load. 4. Reapply the regular brakes. Then apply your parking brake, and then shift into PARK (P), or REVERSE (R) for a manual transmission. 5 . If you have a four-wheel-drive vehicle with a manual transfer case shift lever, be sure the transfer case is in a drive gear -- not in NEUTRAL (N). 6. Release the regular brakes. It can be dangerous to get of your vehicle if out the shift lever not fully in PARK with the is (P) parking brake firmly set. Your vehiclecan roll. If you have left the engine running, the vehicle can move suddenly.You or others could be injured. To be sure your vehicle won't move, even when you're on fairlylevel ground, use the steps that follow. If you have four-wheel drive with manual a transfer case shift lever and your transfer case is in NEUTRAL (N), your vehicle will be free to is roll, even if your shift lever in PARK (P). So, be sure the transfer case in a drive gear not in is NEUTRAL (N). --