Noise Diagnosis - Instrument Panel and Header
Noise Diagnosis - Instrument Panel and Header
Creak from Steering Wheel
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.
2. Spread the surround tabs and remove the surround from the hub.
3. Lubricate the steering wheel hub where the tabs make contact and also lubricate the cover edges at the spokes with a petroleum free lubricant GM P/N 12345579, or equivalent.
4. Reinstall the surround and the inflator module.
Itch from Instrument Cluster Bezel
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.
2. Remove the bezel from the cluster.
3. Fully engage the lower right hand snap hook and glue a 1.7 mm (1/16 in) thick shim under the snap fit hook to secure the lens.
4. Install the cluster.
Glove Box Door Rattle
Symptom
An itch or rattle from the glove box door area.
Possible Cause
The glove box door is out of adjustment.
Diagnosis
Road test the vehicle per the customers description of when the itch or rattle happens.
Corrective Action
Adjust the glove box door striker. Refer to Instrument Panel Compartment Door Lock Striker Adjustment in Instrument Panel Gauges and Console.
Rattle from the Forward Outer Edge of the Instrument Panel Pad
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.
2. Install added insulation at the point of rattle to the underside of the pad.
3. Install the I/P pad.
Squeak in Brake Pedal
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.
Rattle from Sunshade
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).
Rattle from Windshield Header
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 Heated Glass Element.
2. If the rattle still exist, replace the mirror.