Symptom

Buzz from the rear of the door with radio tuned to high bass level.

Possible Cause

Energy absorber vibrating.

Diagnosis

Tune radio to full base and listen for buzz.

Corrective Action

1. Remove the door trim panel. Refer to Door Trim Panel Replacement in Doors.
2. Replace any worn door trim panel fir tree fasteners.
3. Remove the energy absorber and clean the trim panel of all traces of hot melt glue residue.
4. Install a new energy absorber with butyl tape.
5. Install the trim panel. Refer to Door Trim Panel Replacement in Doors.

Symptom

Itch or creak from the door trim panel when driving with an arm on the arm rest.

Possible Cause

The energy absorber is not completely adhered to the inside of the door trim panel. Or the trim panel plastic fir tree clips are worn and are not gripping tightly.

Diagnosis

Road test with an arm on the arm rest and listen for the itch/creak.

Corrective Action

1. Remove the door trim panel. Refer to Door Trim Panel Replacement in Doors.
2. Replace any worn fir tree fasteners.
3. Remove the energy absorber and clean the trim panel of all traces of hot melt glue residue.
4. Install a new energy absorber with butyl tape.
5. Lubricate 2/3 of top rear edge portion with GM P/N 3634770 weather-strip lubricant, or equivalent.
6. Install the trim panel. Refer to Door Trim Panel Replacement in Doors.

Symptom

Clicking from the door window when the window is raised.

Possible Cause

The door window cables are contacting the window.

Diagnosis

Lower the door window and then raise the window and listen for a clicking sound as the window nears the full up position.

Corrective Action

1. Remove the door trim panel. Refer to Door Trim Panel Replacement in Doors.
2. Loosely tie strap the inner cable to the door inner panel using the hole behind the lock control rods.
3. Make sure the cables are also loosely tie strapped to each other.
4. Install the door trim panel. Refer to Door Trim Panel Replacement in Doors.

Symptom

Grinding noise from the window.

Possible Cause

Window regulator.

Diagnosis

Cycle the window and listen for the noise.

Corrective Action

Replace the window regulator with a new one. Refer to Door Window Regulator Replacement in Doors.

Symptom

Rattle when door is closed with the window down.

Possible Cause

The window regulator attachments are loose. Also see the next procedure.

Diagnosis

Lower the door window and close the door while listening for the rattle.

Corrective Action

Tighten the window regulator mounting nuts.

1. Remove the door trim panel and the water deflector. Refer to Door Water Deflector Replacement in Doors.
2. Tighten the regulator mounting nuts to specifications. Refer to Fastener Tightening Specifications in Doors.
3. Install the door water deflector and trim panel. Refer to Door Water Deflector Replacement in Doors.

Symptom

Rattle when closing the door or when driving on a bumpy road.

Possible Cause

A lock rod is loose in the handle.

Diagnosis

Open and close the door while listening for noise.

1. Remove the door trim panel and the water deflector. Refer to Door Water Deflector Replacement in Doors.
2. Check the rod to handle attachments for looseness.
3. Determine if the rod is undersized or if the rod receiver opening in the handle is oversized.

Corrective Action

Replace the handle and/or the rod. Refer to Door Inside Handle Replacement in Doors.

Symptom

Rattle from the door while driving with the window full down.

Possible Cause

1. The vehicle has a first design window regulator.
2. The window regulator attachments are loose.

Diagnosis

1. Road test with the window full down and listen for the rattle.
2. Raise the window 13 mm (1/2 in) while driving and listen for the rattle to stop.

Corrective Action

1. Remove the door trim panel and water deflector. Refer to Door Water Deflector Replacement in Doors.
2. Use a mirror to check the part number on the tag on the back side of the regulator motor.

•	P/N 10413039 or 10413040 the regulator is the first design.

•	P/N 10417572 or 10417573 the regulator is the second design.

3. Replace the first design regulator with a second design regulator. Refer to Door Window Regulator Replacement in Doors.
4. Tighten the second design regulator mounting nuts to specifications. Refer to Fastener Tightening Specifications in Doors.

Symptom

Rattle or itch from the top of the door window.

Possible Cause

Door window contacting the blow out clip.

Diagnosis

Road test with the top and the window up. Apply pressure to the window to eliminate the noise.

Corrective Action

1. Adjust the window tip-in to gain 3 mm (1/8 in) clearance between the clip and the window. Refer to Door Window Tip-In Adjustment in Doors.
2. In some cases it may be necessary to bend the clip to gain clearance.

Symptom

Squeak when opening or closing the door.

Possible Cause

The door hinge roller lacks lubricant.

Diagnosis

Open and close the door and listen for the squeak.

Corrective Action

Lubricate the hinge roller with multi-purpose lubricant, Superlube® (GM P/N 12346241 or equivalent).

Symptom

A rattle during a door slam with the window down

Possible Cause

The door glass bounces against the door beltline outer sealing strip, pushing the sealing strip against the door outer panel causing a rattle.

Diagnosis

Slam the door shut when the window is down and listen for rattle.

Corrective Action

Eliminate the rattle by adding 2 strips of 31.8mm x 41.3mm (1 1/4in x 1 5/8in) of velcro loop material GM P/N 12520273 on the outboard side of the sealing strip between the seal and the door.