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

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

VEHICLES AFFECTED: 1990-91 J/N/L CARS W/2.OL, 2.2L, 3.3L 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 Division Break Line Engine Transaxle Part Number ----- ---------- ------ ---- ------ --------- -----------

1990-91 Chevrolet M7242459 J 2.OL MD9 - Auto 22575851

Pontiac M7617003 J

1990-91 Chevrolet M7242459 J 2.OL/ 2.2L MR7 - Manual 22575852 Pontiac M7617003

1990-91 Chevrolet M7242459 J 2.2L 3T40- Auto 22575853 Pontiac M7617003

1990-91 Chevrolet M7242459 J 3.1L MD9 - Auto 22575854 Pontiac M7617003

1990-91 Chevrolet M7242459 J 3.1L MG2 - Manual 22575855 Pontiac M7617003

1990-91 Chevrolet MY192128 L 2.2L MD9 - Auto 22575853 ME062328

1990-91 Chevrolet MY207010 L ALL MR3 - Manual 22577700 ME063635 1990-91 Chevrolet MY192201 L 3.1L MD9 - Auto 22577701 ME061493 1990-91 Chevrolet MY202773 L 3.1L MG2 - Manual 22577699

1990-91 Olds./Buick EOY N 2.5L 3T40- Auto 22575851 Pontiac NC643948 1990-91 Olds./Buick EOY N 2.5L MT2 - Manual 22575852 Pontiac NC643948

1990-91 Olds./Buick EOY N 3.3L MD9 - Auto 22577698 Pontiac NC643948

Parts are currently available from CANSPO.

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.