Buick: loose coil ground wire

Bulletin number

SB-09351A

Component

Electrical system: wiring

Summary

Buick: loose coil ground wire. Service procedure to check the coil ground wire at two locations on certain vehicles equipped with a v6 engine (rpo lf1/llt). These vehicles may have a loose coil ground wire, which could cause the engine to run rough, misfire, or cause the service engine soon light to illuminate or flash. Bulletin is revised to extend expiration date to 9/30/11.

Owners of these vehicles have filed 46 complaints in the electrical category.