Symptom

Creak when turning the steering wheel.

Possible Cause

The steering wheel surround tabs are moving on the steering wheel hub.

Diagnosis

Road test at a very slow speed turning the steering wheel from lock to lock while pushing and pulling on the rim of the steering wheel.

Corrective Action

1. Remove the drivers inflator module. Refer to Inflatable Restraint Steering Wheel Module Replacement in SIR.
2. Spread the surround tabs and remove the surround from the hub.
3. Lubricate the steering wheel hub where the tabs make contact with a petroleum free lubricant GM P/N 12345579, or equivalent.
4. Reinstall the surround and the inflator module. Refer to Inflatable Restraint Steering Wheel Module Replacement in SIR.

Symptom

Itch from the instrument panel cluster.

Possible Cause

The upper center of the cluster bezel is rubbing against the cluster lens.

Diagnosis

Road test and apply pressure to the upper center of the lens and listen for itch to go away.

Corrective Action

1. Remove the cluster. Refer to Instrument Cluster Replacement in Instrument Panel, Gauges and Console.
2. Remove the bezel from the cluster. Refer to Instrument Panel Cluster Trim Plate Bezel Replacement in Instrument Panel, Gauges and Console.
3. Glue a 1 mm (3/16 in) thick washer between the bezel and the cluster at each of the upper attaching screws.
4. Install the cluster bezel and the cluster. Refer to Instrument Panel Cluster Trim Plate Bezel Replacement in Instrument Panel, Gauges and Console.

Symptom

Itch from the instrument panel cluster.

Possible Cause

The lower right hand cluster lens snap hook is not securing the lens allowing the lens to rub against the cluster bezel.

Diagnosis

Road test and apply pressure to the lower right hand corner of the lens and listen for itch to go away.

Corrective Action

1. Remove the cluster. Refer to Instrument Cluster Replacement in Instrument Panel, Gauges and Console.
2. Remove the bezel from the cluster. Refer to Instrument Panel Cluster Trim Plate Bezel Replacement in Instrument Panel, Gauges and Console.
3. Fully engage the lower right hand snap hook and glue a 0.3 mm (1/16 in) thick shim under the snap fit hook to secure the lens.
4. Install the cluster. Refer to Instrument Panel Cluster Trim Plate Bezel Replacement in Instrument Panel, Gauges and Console.

Symptom

Rattle from the center of the instrument panel (I/P).

Possible Cause

The I/P pad attaching screws at the center defroster vent are loose.

Diagnosis

Road test while applying pressure to the vent area of the I/P pad and listen for the noise to stop.

Corrective Action

1. Remove the center defroster vent and tighten the I/P pad attachment screws. Refer to Fastener Tightening Specifications in Instrument Panel, Gauges and Console.
2. Reinstall the defroster vent.

Symptom

Rattle from the forward edge of the instrument I/P panel pad.

Possible Cause

Not enough insulator foam between the instrument panel and the pad.

Diagnosis

Road test and apply hand pressure to the forward edge of the instrument panel pad to find the location of the rattle.

Corrective Action

1. Remove the Instrument panel pad. Refer to Instrument Panel Upper Trim Pad Replacement in Instrument Panel, Gauges and Console.
2. Install added insulation at the point of rattle to the underside of the pad.
3. Install the I/P pad. Refer to Instrument Panel Upper Trim Pad Replacement in Instrument Panel, Gauges and Console.

Symptom

Flutter noise and vibration when braking with warm brakes.

Possible Cause

Internal part of the vacuum brake booster.

Diagnosis

Road test and apply the brakes to warm up the brakes.

1. Apply the warmed brakes and listen for the flutter noise.
2. Apply the warmed brakes to feel for vibration in the brake pedal.

Corrective Action

Replace the brake booster. Refer to Power Vacuum Brake Booster Replacement in Hydraulic Brakes.

Symptom

Squeak in the brake pedal.

Possible Cause

Lack of lubricant in the brake pedal pivot.

Diagnosis

Apply pressure to the brake pedal and listen for squeak.

Corrective Action

Lubricate the brake pedal pivot pin.

Symptom

Rattle from the sunshade.

Possible Cause

The sunshade rod end is vibrating in the retention clip.

Diagnosis

Road test and apply pressure to the sunshade and listen for noise to change.

Corrective Action

Replace the retention clip tightening the screw to 2 N·m 17 lb in).

Symptom

Rattle from the windshield header.

Possible Cause

The rear view mirror is vibrating on the mirror mounting support.

Diagnosis

Road test and apply pressure to the mirror and listen for the noise to change.

Corrective Action

1. Tighten the mirror mount tension screw. Refer to Fastener Tightening Specifications in Stationary Windows.
2. If the rattle still exist, replace the mirror.