Road Noise Entering Passenger Compartment (Install Insulator)

Some customers may comment on road noise inside the vehicle at speeds of 48 km/h (30 mph) and higher.

This condition may be caused by the pressure relief valve allowing noise to enter the cab.

Install a foam insulator in front of the left and right pressure relief valve following the procedure below.

1. Remove the rear wheel.
2. Remove the wheelhouse liner. Refer to Wheelhouse Liner Panel Replacement-Rear (SI Document ID #1211364).
3. Clean the outer panel outward of the pressure relief valve.
4. Peel back the tape from the insulator and with the sticky side facing the outer panel, slide the insulator between the pressure relief valve and the outer panel and stick in place.
5. Install the wheelhouse liner. Refer to Wheelhouse Liner Panel Replacement-Rear (SI Document ID #1211364).
6. Install the wheel.

For vehicles repaired under warranty, use:

*This labor operation is for bulletin use only. This number will not be published in the Labor Time Guide.