Campaign - Engine/ECM WIring Harness Misrouted: Overview
Model Year 1986Bulletin No. 86-C-3
File in Group 8
Number 8
Date Mar. '86
SUBJECT: ENGINE/ECM HARNESS MISROUTED
MODELS AFFECTED: 1986 CENTURYS EQUIPPED WITH 3.8L V-6 ENGINES (ENGINE VIN Code 3)
General Motors has determined that some early 1986 Centurys equipped with RPO LG3, 3.8L engines have been assembled with the engine ECM wiring harness misrouted. This may result in the wiring harness shorting against the exhaust manifold in the engine compartment. This condition could cause engine starting problems and poor engine performance.
To prevent this condition from occurring, the engine wiring harness will be inspected, and where required, rerouted and/or repaired.