1996 Chevrolet Suburban Owner's Manual - Page 153

Securely attach the harness tothe trailer, then tape or strap it to your vehicle's frame rail. Be sure you leave it loose enough so the wiring won't bind or break when turning with the trailer, but not so loose that it drags on the ground. Store the harness in its original position. Wrap the harness together and tie it neatly so it won't be damaged. If you do tow a trailer, your Center High Mount Stoplamp (CHMSL) may not be properly visible from behind. You should select a trailer with a CHMSL on it or, if one is not available, have one installed. See your GM dealer abouthow to connectyour vehicle's wiring to a trailer CHMSL. Step-Bumper Pad If your vehicle has a rear step bumper, it may be equipped with a rear step pad at the center of the bumper. Use this pad to improve footing when you are steppingon the bumper step. If you will be using the bumper to tow a trailer, you must remove the center cutout circle to install the trailer ball. You must also remove both outer cutouts toattach the trailer safety chains. 2-86