Clunk Noise While Driving Vehicle in Reverse

Some customers may comment about a clunk noise from the lower rear engine compartment area while accelerating in reverse.

This condition may be caused by excessive fore and aft movement of the front powetrain mount.

To correct this condition adjust the engine mount pre-loads. Refer to Powertrain Mount Balance procedure in this bulletin.

Caution: Make sure vehicle is properly supported and squarely positioned on the hoist. To help avoid personal injury when a vehicle is on a hoist, provide additional support for the vehicle opposite from which components are being removed.

1. Raise vehicle



2. Loosen both front and rear mount-through bolts (do not remove).



3. Loosen cradle-to-rear mount bolts (do not remove).
4. Lower vehicle.
5. Shake powertrain vigorously (front-to-rear) and allow powertrain to settle.
6. Raise vehicle.
7. Tighten cradle-to-rear mount bolts.

Tighten
Tighten the cradle-to-rear mount bolts to 50 N·m (37 lb ft).




8. Tighten rear mount-through bolt.

Tighten
Tighten the rear mount-through bolt to 110 N·m (81 lb ft).




9. Tighten front mount-through bolt.

Tighten
Tighten the front mount-through bolt to 110 N·m (81 lb ft).

10. Lower vehicle.
11. Verify repair.

To receive credit for this repair during the warranty coverage period, submit a claim through the Saturn Dealer System for J1953 (Mount, Powertrain [Eng/Trans]-Rebalance/Adjust. An "add time" condition is provided should it be necessary to replace the mount.