1994 GMC Suburban Owner's Manual - Page 135

Luggage Carrier (Option) If you have the optional luggage carrier, you can load things on top of your vehicle. The luggage carrier slats and side rails attached to the roof, cross has and rails which can be moved fore aft in the side rails to help secure and cargo. Tie the load to the side rails side railsupports. Use the cross rails or mostly for foreand aft stops. NOTICE: Loading cargo that weighs more than pounds (90.6 kg) on 200 the luggage carrier may damage your vehicle. you carry When large things, never let them hang over the rear or the of sides your vehicle. Load your cargo that it rests on the slats and so does not scratch or damage the vehicle. Put the cargo against the side rails and fasten it securely to the luggage carrier. Don't exceed the maximum vehicle capacity when loading your vehicle. For more information on vehicle capacity and loading, see "Loading Your Vehicle" in the Index. To prevent damage or lossof cargo as you're driving, check now and then to make sure the luggage carrier cargo are still securely fastened. and Be sure the cargo properly loaded. is If small heavy objects areplaced on the roof,place the load in the area over the rear wheels (behind the rear side door wagon models). If on you need to, cuta piece of 3/8 inch plywood to fit inside the cross rails and side rails to spread the load.plywood is used, tie it to the side rail If supports. Tie the load to the cross rails or the side rail supports. the cross Use rails only to keep the load from sliding. 2-79