1998 Oldsmobile Silhouette Owner's Manual - Page 176

Luggage Carrier (Option) A CAUTION: --- - If you try to carry something on of your top vehicle that is longer or wider than the luggage carrier like paneling,plywood, a mattress, and so forth the wind can catch it as drive you along. This can cause you to lose control. What you are carrying could be violently torn and off, a this could cause or other drivers to have you collision, and of course damage your vehicle. You may be able to carry something like inside. this If you have the optional luggage carrier, you can load But, never carry something longer or wider than things on top of your vehicle. The luggage carrier has the luggage carrier top of your vehicle. on slats and side rails attached to the roof, as well as sliding crossrails and places to use fortying things down. These let you load some things on top of your vehicle, as long as they are not wider or longer than the luggage carrier. 2-74