For 1990-2009 cars

## Noise Diagnosis - Rear of Vehicle FoldingTop Pump Rattle

### Folding Top Pump Rattle

#### Symptom:

Rattle coming from the rear of the vehicle.

#### Possible Cause:

• | Folding top pump mounting nuts (1) loose or missing.

• | Mounting stud(s) missing or broken.

#### Diagnosis:

Visually inspect for mounting studs and nuts (1).

#### Corrective Action:

• | Replace missing or broken studs with bolts.

• | Tighten the mounting nuts to specification.

Tighten
Tighten the pump mounting nuts (1) to 6 N·m (53 lb in).

## Noise Diagnosis - Rear of Vehicle Passenger Side B-Pillar Creak

### Passenger Side B-Pillar Creak

#### Symptom

Creak coming from the upper B-pillar/roof area on the passenger side. Usually only happens over 16°C (60°F) ambient temperature.

#### Possible Cause

Sheet metal interference in the middle to the upper area of the B-pillar.

#### Diagnosis

Remove B-pillar quarter inner trim finishing panel. Test drive the vehicle, listen for noise over rough roads.

#### Corrective Action

Strike the B-pillar sheet metal, inside the vehicle, with a ball peened hammer to put a slight indentation in the inside body panel.

## Noise Diagnosis - Rear of Vehicle Radio Rear Speaker Rattle

### Radio Rear Speaker Rattle

#### Symptom

Rattle from the rear speaker located on the rear quarter trim panel.

#### Possible Cause

The rivets do not hold well due to improper installation.

#### Diagnosis

• | Remove the rear quarter trim.

• | Check speaker attachment to the trim for looseness.

#### Corrective Action

Install new rivets or isolation material as necessary.

## Noise Diagnosis - Rear of Vehicle Rear Compartment Closeout Panel Rattl

### Rear Compartment Closeout Panel Rattle

#### Symptom

Rattle from the rear of the vehicle.

#### Possible Cause

Rear compartment closeout panel (2) rattles against the side trim.

#### Diagnosis

Remove the closeout panel (2) and test drive the vehicle.

#### Corrective Action

Apply a 2 in x 5

## Noise Diagnosis - Rear of Vehicle Hatch Rattle

### Hatch Rattle

#### Symptom

A rattle coming from the rear hatch area.

#### Possible Cause

• | The hatch latch is not in the correct position, both cross-car and up/down.

• | Overslam bumpers are not properly set.

#### Diagnosis

Test drive the vehicle and, with the aid of a helper, push up on the rear compartment lift window panel to stop the noise.

#### Corrective Action

• | Loosen the latch.

• | Center with the striker and retighten. Be sure to provide equal clearance to the latch sides.

• | Lower the lift window pane and run bumpers out to a point that a single piece of paper can barely be pulled out when the rear panel is fully closed.

## Noise Diagnosis - Rear of Vehicle Rear Compartment Lift Window Panel Co

### Rear Compartment Lift Window Panel Cover Rattle

#### Symptom

Rattle from the rear compartment trim area.

#### Possible Cause

Trim is loose due to misinstalled or missing fasteners.

#### Diagnosis

Carefully pull the rear compartment trim down to view behind, look for misinstalled or missing fasteners.

#### Corrective Action

Install new fastener.

## Noise Diagnosis - Rear of Vehicle Rear Quarter Panel Styrofoam Itch

### Rear Quarter Panel Styrofoam Itch

#### Symptom

High pitched itch coming from the rear (right, left or both) of the vehicle over moderate to rough roads. Sounds similar to sheet metal joint creaks.

#### Possible Cause

The stryofoam inserts located behind the quarter trim panel are contacting and rubbing against the quarter inner sheet metal surfaces.

#### Diagnosis

Look for witness marks on the styrofoam insert of the quarter panel inner sheet metal surface.

#### Corrective Action

Apply 3 pieces of 30 x 80 mm GM 6068M closed cell foam (P/N 22638774) or similar isolation material at specified location. Wrap foam around edges approximately 1/4 inch.