CAMPAIGN: QUAD 4 IGNITION COIL SUPPLEMENTAL BULLETIN

Subject: QUAD 4 IGNITION COIL SUPPLEMENTAL BULLETIN

Models/Years: 1987-90 CUTLASS CALAIS AND 1990 CUTLASS SUPREME WITH 2.3L ENGINE (VIN CODE D or A)

THE INVOLVED VEHICLES SECTION OF EMISSION CAMPAIGN BULLETIN 90-E-01 IS REVISED FOR CLARITY.

CUTLASS CALAIS WITH ENGINE VIN CODE "D" AND CALIFORNIA EMISSIONS HAVE BEEN ADDED TO THE CAMPAIGN.

CONDITION

General Motors has determined that some 1987-90 Oldsmobile Cutlass Calais models and 1990 Cutlass Supreme models equipped with 2.3L (VIN Code D or A) engines (options LD2 or LGO) 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 a "no start" condition when the coil fails completely.

Dealers are to inspect the ignition coils, and, if necessary, replace coils as instructed in the SERVICE PROCEDURE section of this bulletin.

VEHICLES INVOLVED

Involved are certain 1987-90 Oldsmobile Cutlass Calais models and 1990 Cutlass Supreme models equipped with 2.3L (VIN Code D or A) engines (options LD2 or LGO) within the breakpoints listed below:

ENGINE MODEL VIN 1987 1988 1989 1990 --------------- ----- ---- ---- ----- ------------------------------- Cutlass Calais D All All All S.O.P. Thru LM767173 Cutlass Calais A --- --- All S.O.P. Thru LM766825 Cutlass Supreme D --- --- --- S.O.P. Thru LD400017, with NA5 Cutlass Supreme D --- --- --- S.O.P. Thru LD400784, with NB2 Cutlass Supreme A --- --- --- S.O.P. Thru LD401389

S.O.P. means "Start of Production". NA5 is Federal Emissions option; NB2 is California Emissions option.

NOTICE: Vehicles listed in Oldsmobile's records as previously repaired under Labor Operation T4676, or with Kit (P/N 10457062), or with two "yellow tab" ignition coils (P/N 10472748), were deleted from this campaign.

DEALER ACTION

If there is evidence of intentional disablement of the emission system, the dealer is to notify the vehicle owner of this condition and ask if he/she wants the system restored. Restoration cost is the responsibility of the owner.

Dealers are to perform this campaign on all involved vehicles at no charge to owners, regardless of mileage, age of vehicle, or ownership from this time forward.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.