2004 GMC Sonoma Owner's Manual - Page 101

You can adjust the crossrails to handle loads of various sizes. Just loosen the slider knobs at each end of the crossrail and move them to where you want them. Make sure both sides of the crossrails are even, then tighten the slider knobs. Be sure the cargo is properly loaded. Follow these guidelines: Don't exceed the maximum vehicle capacity when loading your vehicle. For more information on vehicle capacity and loading see Loading Your Vehicle on page 4-45. To prevent damage or loss of cargo as you're driving, check now and then to make sure the luggage carrier and cargo are still securely fastened. • Carrying small, heavy loads on the roof is not recommended. Bed Rails • Secure the load using the tie downs at both ends of the crossrails. When loading cargo directly on the roof panel, use the crossrails to keep the load from shifting. {CAUTION: If your vehicle has bed rails, they are there for appearance only. If you try to tie down a load with them, or to secure things in your truck, not only can it damage the bed rails, but the load can loosen. This could cause injury to you or others. Secure loads by using the cargo tie-down loops, inside the truck bed area. • If you need to carry long items, move the crossrails as far apart as possible. Tie the load to the tie downs provided. Also tie the load to the bumpers. Do not tie the load so tightly that the crossrails or side rails are damaged. Notice: Loading cargo on the luggage carrier that weighs more than 100 lbs. (45 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. 2-41