GM Service Manual Online
For 1990-2009 cars only

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.

Folding Top Creak


Object Number: 397236  Size: SH

Symptom:

Creak sound coming from the #1 bow.

Possible Cause:

The #1 bow to side rail bolt is loose.

Diagnosis:

Check torque on the side rail bolt.

Corrective Action:

    • Apply blue LOCTITE® to the side rail bolt.
    • Tighten the side rail bolt to specification.

Tighten
Tighten the side rail bolt to 17 N·m (13 lb ft).

Creak Or Rattle In B-Pillar Area


Object Number: 397239  Size: MH

Symptom:

    • Rattle in the B-pillar area.
    • Creak in the B-pillar area.

Possible Cause:

Folding top pivot bracket bolts (2) may be loose.

Diagnosis:

Check pivot bracket bolt for looseness.

Corrective Action:

Tighten the pivot bracket bolt to specification.

Tighten
Tighten the pivot bracket bolt to 27 N·m (20 lb ft).

Creak Or Rattle In B-Pillar Area


Object Number: 397246  Size: MH

Symptom:

    • Rattle in the B-pillar area.
    • Creak in the B-pillar area.

Possible Cause:

    • Folding top cylinder pivot pin (7) is dry.
    • Spring washer (3) may not be installed properly.
    • Folding top cylinder bolt (5) is loose.

Diagnosis:

    • Check cylinder bolt (5) for looseness.
    • Check spring washer (3) for correct orientation.

Corrective Action:

    • Lubricate the cylinder pivot pin (7).
    • Tighten the cylinder bolt (5) to specification.

Tighten
Tighten the cylinder bolt (5) to 50 N·m (37 lb ft).

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.