GM Service Manual Online
For 1990-2009 cars only

Caution: All floor pan insulator material must meet Federal Vehicle Safety Standards for flammability. Failure to do so could result in personal injury and/or vehicle damage.

The floor pan insulators have been designed for the higher floor pan temperatures that result from the use of the catalytic converter in the exhaust system. When servicing a vehicle in the field any insulators that disturbed or removed is reinstalled in the original sequence and the location.

When servicing or replacing interior insulators observe the following instructions:


Object Number: 332476  Size: SH
    • Insulators must be installed in the original position and sequence.
    • If it is necessary to replace an insulator, use the specified service part.
    • When installing an insulator do not enlarge cutouts or holes that are used for the attachment of interior components such as seats or safety belts.
    • Route over the floor pan insulators in the original location and clip the cross body harness in place for the following interior components:
       - Power seats
       - Lamp belt warning light
       - Alarm/buzzer
       - Rear speakers
    • Do not apply the spray-on deadeners and the trim adhesives to the top of the floor pan at the area directly over the catalytic converter or the muffler(s).