WARNING

If something is carried on top of the vehicle that is longer or wider than the roof rack—like paneling, plywood, or a mattress—the wind can catch it while the vehicle is being driven. The item being carried could be violently torn off, and this could cause a collision and damage the vehicle. Never carry something longer or wider than the roof rack on top of the vehicle unless using a GM certified accessory carrier.

For vehicles with a roof rack, the rack can be used to load items. For roof racks that do not have crossrails included, GM Certified crossrails can be purchased as an accessory. See your dealer for additional information.

For vehicles with crossrails, they can be moved back and forth to help secure cargo. To adjust them, turn the knob located at each end of the crossrail counterclockwise until the crossrail can move freely. To secure the crossrail, turn the knob located at each end of the crossrail clockwise until tightened. Tie the load to the siderails or siderail supports.

Notice: Loading cargo on the roof rack that weighs more than 91 kg (200 lbs) or hangs over the rear or sides of the vehicle may damage the vehicle. Load cargo so that it rests evenly between the crossrails, making sure to fasten cargo securely.

To prevent damage or loss of cargo when driving, check to make sure crossrails and cargo are securely fastened. Loading cargo on the roof rack will make the vehicle’s center of gravity higher. Avoid high speeds, sudden starts, sharp turns, sudden braking or abrupt maneuvers, otherwise it may result in loss of control. If driving for a long distance, on rough roads, or at high speeds, occasionally stop the vehicle to make sure the cargo remains in its place.

Do not exceed the maximum vehicle capacity when loading the vehicle. For more information on vehicle capacity and loading, see Vehicle Load Limits  .

To prevent damage or loss of cargo, check now and then to make sure the luggage and cargo are still securely fastened.

Be sure the cargo is properly loaded.

• If small heavy objects are placed on the roof, place the load in the area over the rear wheels (behind the rear side door on extended models). If needed, cut a piece of 3/8 inch plywood to fit inside the crossrails and siderails to spread the load. If plywood is used, tie it to the siderail supports.
• Tie the load to the crossrails or the siderail supports. Use the crossrails only to keep the load from sliding. To move the crossrails, pull out on the latch release handle at each end. Slide the crossrail to the desired position balancing the force side to side. Push the release handle back into the latched position and slide the crossrail back and forth slightly to be sure the latch snaps securely into place.
• If needed to carry long items, move the crossrails as far apart as they will go. Tie the load to the crossrails and the siderails or siderail supports. Also tie the load to the bumpers. Do not tie the load so tightly that the crossrails or siderails are damaged.
• After moving a crossrail, be sure it is securely locked into the siderail.

A Center High-Mounted Stoplamp (CHMSL) is located above the glass or above the rear load doors.

If items are loaded on the roof of the vehicle, care should be taken not to block or damage the CHMSL unit.