TRANSAXLE MOUNT CHIRPS/SQUEAKS (NEW MOUNT WITH NEW BUMPER)

Subject: TRANSAXLE MOUNT CHIRPS (REPLACE TRANSAXLE MOUNT BUMPER WITH NEW BUMPER)

Models Affected: 1990-91 SUNBIRD AND GRAND AM MODELS W/2.0L AND 3.1L

Condition: Chirping noise in engine compartment.

Cause: Transaxle mount bumper rubs against mount.

Correction: Replace transaxle mount bumper with new bumper. Refer to "Parts Information" for vehicle application and updated part number.

IMPORTANT: Before transaxle mount bumper is replaced, be sure the bumper is the source of the noise. Coat the bumper with a silicone base grease and test drive vehicle. If noise is no longer evident, replace the bumper.

1. Remove transaxle mount from the vehicle. Refer to appropriate Service Manual and Section for procedure. 2. Place the mount in a vise. Refer to Figure 1. 3. Remove bumper retaining nuts (if not removed during transaxle mount removal). 4. Remove bumper. Lift up on the inner mount assembly until the bumper can be removed. Refer to Figure 2. 5. Install new bumper by lifting up on inner mount assembly. 6. Install bumper retaining nuts. 7. Remove mount from vise. 8. Install transaxle mount in the vehicle.

Parts Information:

Model VIN Car Bumper Year Break Line Engine Transaxle Part Number ------- -------- ------- ----- ---------- ----------- 1990-91 M7617003 Sunbird 2.0L MD9 - Auto 22575851

1990-91 M7617003 Sunbird 2.0L MR7 - Manual 22575852

1990-91 M7617003 Sunbird 3.1L MD9 - Auto 22575854

1990-91 M7617003 Sunbird 3.1L MG2 - Manual 22575855

1990-91 MC643948 Grand Am 2.5L 3T40 - Auto 22575851

1990-91 MC643948 Grand Am 2.5L MT2 - Manual 22575852

Parts are currently available from GMSPO. Labor Operation Number: T1790

Labor Time: .8 Hour for 4 cylinder engines with Automatic or Manual Transmission

1.0 Hour for 6 cylinder engines with Automatic or Manual Transmission

Trouble Code: 92

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.