Rattle from Front of Roof Panel-Coupe
Symptom
Rattle from the front roof attachments.
Possible Cause
Latch striker out of adjustment.
Diagnosis
Road test on a rough road. Open the latch part way to increase the clamping pressure on the striker. Listen for the rattle to be eliminated.
Corrective Action
Adjust the striker angle by moving the outboard edge of the striker downward to increase the clamping pressure when the latch is fully closed.
Rattle from Rear Side of Convertible Top
Symptom
Rattle from the rear side of the roof.
Possible Cause
Flipper door is contacting the roof balance bar.
Diagnosis
Road test with the top up. Test by wedging an insulator between the flipper door and the roof bar to eliminate the noise.
Corrective Action
Wrap the balance bar, where the flipper door rubs the bar, with the loop portion of hook and loop fastener material.
Creak from Side of Convertible Top
Symptom
Creaking sound from the rear side of the convertible top with the top up.
Possible Cause
Flipper door hinge creaking.
Diagnosis
Road test and listen for noise. Or open the flipper door and twist the door slightly and listen for creak.
Corrective Action
Lubricate the flipper door hinge with a non petroleum grease, a dry lube, such as GM P/N 1052948, or equivalent.
Itch From Number Five Bow Weather-strip
Symptom
Itch from the number five bow weather-strip when driving slowly on a surface that twist the vehicle body.
Possible Cause
The number five bow weather-strip is rubbing on the stowage lid protector.
Diagnosis
Road test slowly on a surface that twists the body and listen for an itch.
Corrective Action
| • | Raise the number five bow and apply GM P/N 3634770 Goodwrench weather-strip lubricate or GM P/N 12345579 dielectric silicone grease to the weather-strip. |
| • | DO NOT use a petroleum based lubricant. |
| • | Apply GM P/N 3634770 Goodwrench weather-strip lubricate or GM P/N 12345579 dielectric silicone grease to the weather-strip during normal maintenance. |
| • | Check fit of cloth on the roof. |
Creaking from Upper Side of Convertible Top
Symptom
Creaking from the convertible top near driver's or passenger's head.
Possible Cause
The coating on the adjustment screw head has worn off allowing the metal screw to contact the folding top rail.
Diagnosis
Road test and apply upward pressure to the top side rail to eliminate the noise.
Corrective Action
- Open the top to expose the adjustment screw.
- Measure the height of the screw.
| • | Replace with a new screw to the same height or |
| • | Add an insulator to the screw head and adjust the screw inward to maintain the correct height. |
Creaking from Upper Side of Convertible Top
Symptom
Creaking from the convertible top near the drivers or passengers head.
Possible Cause
The number two bow is rubbing on the number two bow bracket.
Diagnosis
Road test and apply pressure to the outer end of the number two bow to eliminate the noise.
Corrective Action
- Position the top with the #1 and the #5 bows up.
- Remove the headliner retaining screw from the side rail for additional access.
- Loosen the #2 bow retaining screws.
- Insert an insulator between the bow and the bracket. Use the loop portion of hook and loop material.
- Tighten the #2 bow screws and the headliner screw to specifications. Refer to Fastener Tightening Specifications in Roof.
Bang from Rear of Roof Panel- Coupe
Symptom
A harsh bang or rattle from the rear of the roof lift off panel.
Possible Cause
There is not enough latch pressure being applied to the rear locator pins.
Diagnosis
Road test and listen for the noise and/or grasp the roof panel and check for movement.
Corrective Action
Adjust the hook on the rear latch inward one turn, then retest. If this does not correct the problem, then move the ball socket receiver. Refer to Roof Lift Off Panel Adjustment in Roof.
Top Latch Creaking
Symptom
A ticking or an itching sound from the removable roof panel front latch area.
Possible Cause
Stainless steel retainer is loose, corroded, or needs lubricated.
Diagnosis
Important: Never loosen both latches simultaneously.
Road test. If a noise is heard during road testing and can be stopped by partially unlatching one latch at a time, then inspect latch for wear.
Corrective Action
Replace striker if roller is scuffed and lubricate rollers on new parts.
