GM Service Manual Online
For 1990-2009 cars only

Noise Diagnosis - Sun Roof Header Sheet Metal Tap


Object Number: 397234  Size: MH

Symptom

A tapping sound is heard along the windshield header.

Possible Cause

Sheet metal is tapping.

Diagnosis

Test drive the vehicle and pry on location shown.

Corrective Action

Pry apart the two layers of metal.

Noise Diagnosis - Sun Roof T-Top Handle/Lock Mechanism Rattle


Object Number: 397274  Size: SH

Symptom

Over moderate to rough road surfaces, a tapping sound or rattle is heard in the T-top handle location.

Possible Cause

    • Looseness in riveted joints between the crank plate and rods (front and rear).
    • Flat spring and/or lock bracket is contacting the lock rod(s).

Diagnosis

    • Inspect for looseness in the riveted joints (front and rear).
    • Look for witness marks and lock rod contact to the flat spring and/or lock bracket.

Corrective Action

    • Vehicles that have looseness in the riveted joints, order and install new T-tops.
    • Flock interfaces between the flat spring and lock bracket and rod(s) so rod(s) do not contact.