Engine - Exhaust Noise, Coolant Leak or Wheel Vibration

Number: 92-224B-6 (REVISED)

Section: 6

Date: AUGUST 1992

Corporate Bulletin No.: 236106R

ASE No.: A1, A8

Subject:
GROWL NOISE, EXHAUST NOISE, COOLANT LEAK OR STEERING WHEEL VIBRATI0N

Model and Year:
1992 CORSICA AND BERETTA

THIS BULLETIN CANCELS AND SUPERSEDES DEALER SERVICE BULLETIN NO. 92-224A-6, DATED JUNE 1992. THE 2.3L ENGINE HAS BEEN ADDED. ALL COPIES OF 92-224A-6 SHOULD BE DISCARDED.

Condition:
Some owners of 1992 L cars may experience the following conditions:
1. Engine rocking more than normal back and forth in engine compartment during acceleration and deceleration.
2. Exhaust noise at the exhaust manifold seal during acceleration and deceleration.
3. Engine coolant leak from the radiator outlet hose, 2.3L (VIN A).
4. Engine vibration felt through the steering wheel.
5. Growl or grounding out noise from the underhood area.

Cause:
Engine mount lower strut breaking from road shock, road debris impact or repeated rapid acceleration.





Correction:
Replace engine mount lower strut.

Service Information:
- Refer to Section 6A7 for lower engine mount strut replacement.
- Be sure to inspect the following items. Some items may not apply to all vehicles.
- Engine cooling system for leaks.
- Radiator outlet hose for possible damage and/or leaks 2.3L (VIN A).
- Drive axle boots for damage.
- Electrical wires and connections for damage.

- The strut to bracket bolt (5) is tightened to 120 N-m (89 lbs.ft.) and is longer than the strut to the suspension support bolt, which is tightened to 75 N-m (55 lbs.ft.). Use hole "A" for automatic transaxles and "M" for manual transaxles. Refer to illustration for correct fastener tightening specifications, bolt usage and bolt location.





VIN BREAKPOINTS





Parts Information:
Use the New Part Numbers when replacing the Lower Engine Mount Strut.

Parts are currently available from GMSPO.





Labor Operation Number:
T1875