GM Service Manual Online
For 1990-2009 cars only

Object Number: 319188  Size: SH

Improper frame insulator installations may result in the following conditions:

    â€¢ Popping noises
    â€¢ Structure shaking
    â€¢ Road noise
    â€¢ Squeaks
    â€¢ Snapping noises

The conditions may sometimes be caused by the following 2 mistakes:

    â€¢ The wrong part is installed.
    â€¢ The insulator is not properly tightened.

An improperly located insulator rubbing on the frame rail may cause squeaks.

If a problem is diagnosed as an insulator problem, perform the one or both of the following 2 tests:

    â€¢ A color code test, in order to determine the correct usage
    â€¢ A body bolt torque test

If the wrong insulator is used, replace the insulator with the correct component.