Campaign - Engine Harness Jumper Wire Replacement: Overview

Number: 87C10

Section: 6D

Date: July, 1987
Subject: PRODUCT CAMPAIGN 87C10

ENGINE HARNESS ECM CONNECTOR CRACKED TERMINAL

Model and Year: 1987 CHEVROLET S/T 10 EQUIPPED WITH 2.5L ENGINES (RPO LN8)
TO: ALL CHEVROLET DEALERS

General Motors has determined that some 1987 Chevrolet S/T 10 model trucks equipped with 2.5L (RPO LN8) engines may have been built with an engine electrical harness which has a cracked wire terminal on a jumper wire in the ECM connector. As a part of the fuel injector signal circuit, if the terminal breaks and causes an open circuit, this will allow the engine to crank but not start.

To prevent this condition from occurring it will be necessary to replace the jumper wire, which has terminals attached.