Rattle at Rear Seat Upper Attachment(Install New Rubber Bumer/Plastic Insulator)

Some owners may comment about a rattle noise coming from the rear seat at the upper attachment where the seat connects with the rear cab wall. This condition may be more noticeable when driving over bumps and could occur when the seat is folded up (stowed) or folded down.

The condition may be caused by a gap at the rear seat upper attachment.

A new rubber bumper and plastic insulator have been developed in order to correct the condition. Install new rubber bumpers, plastic insulators, and flock strip insulators on the rear seat upper attachments on affected vehicles. Use the following procedure and the part numbers listed below.

1. Remove the rear seat from the vehicle. Refer to Seat Replacement-Rear Bench in the Seats subsection in the 1999 Silverado and Sierra Service Manual.



2. Apply adhesive, GM P/N 12346067 (In Canada use P/N 10953507) or LOCTITE™ Prism 410*, to the rear of the rubber bumpers (one per side).

*We believe this source and their products to be reliable. There may be additional manufacturers of such products. General Motors does not endorse, indicate any preference for or assume any responsibility for the products from this firm or for any such items which may be available from other sources.




3. Insert the rubber bumper into the holes from behind the metal seat back hook with the rounded end of the bumper facing downward (1).

3.1.	Pull gently on the finger anchors of the bumper until the bumper is fully seated into the holes (2).

3.2.	Ensure that the bumper is flush with the metal seat back hook.




4. Wrap the flock tape, GM P/N 15047913, evenly around the rear seat loop (1). Snap the plastic tube, GM P/N 15040391, over the flock tape on the rear seat loop (2).

Important: Do not bend the metal seat back hook. Bending the hook may result in improper clearance between the seat back rear seat loop.

5. Install the rear seat into the vehicle. Refer to Seat Replacement-Rear Bench in the Seats subsection in the 1999 Silverado and Sierra Service Manual.

Parts are currently available from GMSPO.

For vehicles repaired under warranty, use: