1995 GMC Yukon Owner's Manual - Page 234

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 theload. 4. Re-apply the regular brakes. Then apply your parking brake, and then shift to PARK (P), or REVERSE (R) for a manual transmission. 5. If you have a four-wheel-drive vehicle, be sure the transfer case is in a drive gear-not in NEUTRAL (N). 6. Release the regular brakes. When You Are Ready to Leave After Parking on Hill a 1. Apply your regular brakes and hold the pedal down while you: Start your engine; Shift into a gear; and Release the parking brake. 2. Let up on the brake pedal. 3. Drive slowly until the trailer is clear of the chocks, 4. Stop and have someone pick up and store the chocks. 4-46