Campaign - Faulty Quad 4 Ignition Coil: Overview

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Model Year: 1990

Bulletin No.: 90-C-11

File in Group: 6E

Number: 24

Date: March, '91


SUBJECT:
QUAD 4 IGNITION COIL

MODELS AFFECTED:
CERTAIN 1988-90 SKYLARK WITH 2.3L ENGINE (VIN CODE D)


CONDITION

General Motors has determined that some 1988-90 Buick Skylark models equipped with 2.3L (VIN Code D) engine (option LD2) may develop cracks in the case of the I.D.I. (Integrated Direct Ignition) coil at the high voltage terminals. As the cracks grow, external arcing occurs between terminals and/or terminal to coil frame resulting in intermittent misfire, rough idle, and ultimately "no start" condition when the coil fails completely.

DEALER ACTION

To correct this condition, dealers are to inspect the ignition coils, and if necessary, replace coils as instructed in the Service Procedure section of this bulletin.

VEHICLES INVOLVED

Certain 1988-90 Buick Skylark models equipped with 2.3L (VIN Code D) engine within the following breakpoints:

THROUGH AND
YEAR PLANT FROM INCLUDING

1988 Lansing JM000002 JM054799
1989 Lansing KM000001 KM061525
1990 Lansing LM000006 LM066523

NOTICE:
VEHICLES LISTED IN BUICK'S RECORDS AS PREVIOUSLY REPAIRED UNDER LABOR OPERATION T4676 WERE DELETED FROM THIS CAMPAIGN.

All vehicles listed on the dealer printout will require inspection, and as necessary, correction. Other suspect vehicles should be checked for campaign involvement by utilizing the Vehicle Information Service System (V.I.S.S.) for verification.