CAMPAIGN: SUPPLEMENTAL INFLATABLE RESTRAINT (SIR)

SUBJECT: Supplemental Inflatable Restraint (SIR) Inflator Module

ATTN: DEALER PRINCIPAL AND SERVICE MANAGER BE SURE TO REVIEW THIS INFORMATION WITH YOUR SERVICE DEPARTMENT PERSONNEL

General Motors has determined that a defect which relates to motor vehicle safety exists in some 1990 Cadillac model vehicles. In the event of an accident requiring deployment of the driver's side Supplemental Inflatable Restraint (SIR), the SIR inflator Module, located in the steering wheel assembly, could separate. If separation occurs, the air bag will not inflate as intended, and the driver will not be properly restrained. In addition, separation of the SIR Inflator Module may result in hot combustion gases escaping into the occupant compartment, presenting the possibility that vehicle occupants could receive burn injuries.

VEHICLES INVOLVED

Certain 1990 Cadillac model vehicles as indicated below:

LU600079 L4211240 L4271085 L4299912 LU612219 L4224056 L4272831 L4300266 LU612869 L4225302 L4285508 L4300626 LU810455 L4227516 L4296163 L4300800 LU813499 L4248347 L4296290 L4300926 L4251620 L4298470 L4303176 L4265377 L4298716 L4303333 L4265886 L4299855 L4303769

DEALER ACTION

To correct this condition, dealers are to contact the owner and replace the SIR Inflator Module per the Vehicles Involved and Service Procedure section of this bulletin. Dealers are to service all vehicles subject to this campaign at no charge to owners, regardless of mileage, age of vehicle, or ownership.

OWNER NOTIFICATION

Owners will be notified of this campaign on their vehicle by Cadillac Motor Car Division. The Cadillac Consumer Relations Center is being requested to contact the owners by telephone to immediately advise them of this campaign and arrange this service with you. A follow-up letter (copy enclosed) will be sent to owners where telephone contact was unsuccessful.

PARTS INFORMATION

Dealers who will service involved vehicles will be shipped the SIR Inflator Module on a "No Charge" basis.

Parts will not be billed on dealer parts account. Dealers should not order parts from GMSPO.

SERVICE PROCEDURE

IMPORTANT: Refer to appropriate 1990 Cadillac Service Information Manual (Section 3F4) for SIR Inflator Module Service Procedure.

1 . Read precautions on handling SIR Inflator Module.

2. Disable the SIR system.

3. Remove and install new Inflator Module.

4. Enable the SIR system.

5. Retain removed Inflator Module properly tagged in Inflator Module shipping container and return as per shipping instructions provided with replacement module.

CAUTION:

DO NOT DEPLOY

6. Install Campaign Completion Label for 90-C-4.

CREDIT

Credit for this campaign will be issued upon receipt of a properly prepared warranty claim as follows:

Failure Labor Labor Description Code Operation Hours* ----------- -------- --------- ------ Replace SIR Inflator Module 96 V6640 0.5

* This labor time represents the actual time required to perform the correction. Dealers should apply for 0.1 additional hour for administrative allowance as "Other Labor Hours".

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.