Service Update

Bulletin number

GCUS-3-844

Component

Engine and engine cooling

Summary

17069 - Service Update. The counter bore in the torque converter housing used for auxiliary coolant pump attachment was drilled deeper than specification. The increased counter bore depth limits the usable thread distance for the original fastener to contact. There is only one fastener used to hold the pump. Replace the double ended auxiliary coolant pump mounting stud with revised attachment bolt.

Owners of these vehicles have filed 258 complaints in the engine category.