General motors has determined that some 1992-93 pontiac sunbird model vehicles equipped with a 2.0L engine...

Bulletin number

CAMP/93C54A

Component

Engine and engine cooling: cooling system

Summary

General motors has determined that some 1992-93 pontiac sunbird model vehicles equipped with a 2.0l engine may have been assembled with the incorrect coolant pump. Coolant may leak past the internal coolant pump seal and into the pump bearings. This may cause premature bearing failure resulting in a coolant pumping noise. If not repaired, this condition may result in a loose timing belt tensioner which could cause the engine to fail. To prevent this condition from occurring, dealers will inspect the vehicle's coolant pump and replace the pump if necessary. Tw

Owners of these vehicles have filed 12 complaints in the engine category.