1996 GMC Savana Van Owner's Manual - Page 185

When You Are Ready to Leave After Parking on a Hill 1. Apply your regular brakes and hold the pedal down while you: Start your engine: Shift into a gear: and Release the parking brake. Trailer Wiring Harness The eight-wire harness, if you have one, is stored under your vehicle along the rear frame crossmember. It is wrapped and bound with a plastic strap. The harness has a 30-anlp battery feed and no connector, and you should have a qualified electrical service person wire your harness for you. Attach the harness to the trailer, then tape or strap it to your vehicle's frame rail. Be sure you leave it loose enough so the wiring doesn't bend or break, but not so loose that it drags on the ground. Store the harness in its original place. Wrap the harness together and tie it neatly so it won't be damaged. The five-wire harness, if you have one, is stored inside the vehicle at the passenger side rear corner, behind the jack. This should be wired by a qualified electrical service person. It must be routed out of your vehicle between the rear door and the floor, with enough of the harness left on both sides so that the trailer or the body won't pull it. Store the harness in its original place. Wrap the harness together and tie it neatly so it won't be damaged. 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. Maintenance When Trailer Towing Your vehicle will need service more often when you're pulling a trailer. See the Maintenance Schedule for more on this. Things that are especially important in trailer operation are automatic transmission fluid (don't overfill), engine oil, axle lubricant, belt, cooling system and brake adjustment. Each of these is covered in this manual, and the Index will help you find them quickly. If you're trailering, it's a good idea to review these sections before you start your trip. Check periodically to see that all hitch nuts and bolts are tight. 4-37