1998 Oldsmobile Silhouette Owner's Manual - Page 177

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 and cargo are still securely fastened. NOTICE: Loading cargo that weighs more than 150 lbs. (68 kg) on the luggage carrier may damage your vehicle. When you carry cargo on the luggage carrier of a proper size and weight, put it on the slats, as far forward as you can. Then slide the crossrail up against the rear of the load, to help keepit from moving. You can then tie it down. Turn the releaseknobs to the left tounlock the crossrails. Slide the crossrails forward back, as or needed, to accommodate loads of various sizes.