Service update (revised service procedure)

Bulletin number

GCUS-3-412

Component

Engine

Summary

15671a - service update (revised service procedure). Reposition the main body wiring harness branch located in the engine compartment on certain vehicles equipped with 3.6l dohc v6 engine (rpo lfx). If the harness is not routed properly, the engine may not start, have reduced power, shut off or stall while driving. This condition could have other effects, including the center high mount stop lamp (chmsl), turn signal lights or headlights becoming inoperative.

Owners of these vehicles have filed 50 complaints in the engine category.