Skylark L4-138 2.3L DOHC VIN D MFI QUAD 4 (1989)
Ignition Coil: All Technical Service Bulletins
Coil and Ignition Housing - Characteristic Conditions
File in Section: 6E - Engine Fuel & Emission
Bulletin No.: 67-65-34
Date: November, 1996
INFORMATION
Subject:
Coil and Ignition Housing Characteristic Conditions
Models:
1988-97
Buick Skylark
1988-93
Chevrolet Beretta
1995-97
Chevrolet Cavalier
1997
Chevrolet Malibu
1987-91
Oldsmobile Calais
1990-91
Oldsmobile Cutlass Supreme
1992-97
Oldsmobile Achieva
1997
Oldsmobile Cutlass
1988-97
Pontiac Grand Am
1990-91
Pontiac Grand Prix
1995-97
Pontiac Sunfire
with Quad 4 and LD9 Twin Cam Engines
(VINs A, D, 3, T - RPOs LG0, LD2, L40, LD9)
A high percentage of ignition coils and ignition coil housings from the above vehicles returned under the corporate warranty return program have been
tested with no trouble found. A review of warranty repair orders has indicated that ignition coils and housings are being replaced for conditions that are
characteristic of this ignition system, and not indicative of a part failure.
A large number of ignition coil housings from 1995 and 1996 Quad 4 and Twin Cam engines have, after a period of use, a characteristic marking often
