Campaign - Engine Lift/Coil Bracket Replacement: Overview

87pontiac18
Number 87-C-07 Date 10/87


Subject: PRODUCT CAMPAIGN 87-C-07 REAR ENGINE LIFT/COIL MOUNTING BRACKET AND COIL WIRE SHIELD


VEHICLES AFFECTED 1987 Pontiac Sunbirds Equipped With 2.0L (RPO LT2/LT3) L4 OHC Engine (VIN Codes K and M)

TO: ALL PONTIAC DEALERS


General Motors has determined that some 1987 Pontiac Sunbird models may experience fatigue fracture of the rear engine lift bracket. The ignition coil and coil bracket is mounted to the rear engine lift bracket. If the lift bracket fractures, the coil may become unsupported. This condition may ultimately result in engine misfire and possible loss of engine operation.

Additionally, high frequency magnetic coupling between the ignition coil and distributor coil magnetic pickup can result in extra pulses in the RPM reference signal. This condition may cause extended cold cranking/no start, pop back during cranking and/or occasional "Service Engine Soon" light with stored code 42..

To protect against fatigue fracture of the rear engine lift bracket, the lift bracket will be inspected and, if necessary, replaced. Additionally, a pencil brace (service kit) will be installed as required on involved vehicles.

To prevent the possibility of magnetic coupling between the ignition coil and distributor coil magnetic pickup, a coil wire shield will be installed on all involved vehicles.