2008 GMC Envoy Owner's Manual - Page 132

Luggage Carrier {CAUTION: If you try to carry something on top of your vehicle that is longer or wider than the luggage carrier - like paneling, plywood, a mattress and so forth - the wind can catch it as you drive along. This can cause you to lose control. What you are carrying could be violently torn off, and this could cause you or other drivers to have a collision, and of course damage your vehicle. You may be able to carry something like this inside. But, never carry something longer or wider than the luggage carrier on top of your vehicle. If your vehicle has a luggage carrier, it will allow you to load things on top of your vehicle. The luggage carrier has side rails attached to the roof, places to use for tying things down and may have sliding crossrails. These let you load some other things on top of your vehicle, as long as they are not wider or longer than the luggage carrier. To slide the crossrails to where you want them, pull up on the lever on each side of the crossrail. This releases the crossrail and allows you to slide it. When the crossrail is where you want it, press down on the levers to lock it into place. Notice: Loading cargo on the luggage carrier that weighs more than 220 lbs (100 kg) or hangs over the rear or sides of the vehicle may damage your vehicle. Load cargo so that it rests on the slats as far forward as possible and against the side rails, making sure to fasten it securely. Do not exceed the maximum vehicle capacity when loading your vehicle. For more information on vehicle capacity and loading, see Loading Your Vehicle on page 4-34. To prevent damage or loss of cargo as you are driving, check now and then to make sure the luggage carrier is locked and cargo is still securely fastened. When the luggage carrier is not in use, place the crossrails at the following positions for wind noise reduction. Place one crossrail at the rear most point of the vehicle and the other crossrail above the opening of the rear door. 2-58