Skyhawk L4-121 2.0L Turbo VIN M FI (1987)
Ignition Coil: All Technical Service Bulletins
Campaign - Rear Engine Lift/Coil Mounting Bracket
Model Year
1987
Bulletin No. 87-C-7
File in Group
6
Number
20
Date
Oct., '87
SUBJECT:
REAR ENGINE LIFT/COIL MOUNTING BRACKET AND COIL WIRE SHIELD
MODELS AFFECTED: 1987 BUICK SKYHAWK EQUIPPED WITH 2.0L (RPO LT2/LT3) L4 OHC ENGINE (VIN CODE K AND M)
General Motors has determined that some 1987 Buick Skyhawk 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.
