Condition & Vehicle Involved, Owner Notification & Dealer Campaign Information
CONDITION INVOLVEDGeneral Motors has determined that a defect which relates to motor vehicle safety may exist in some 1986 and 1987 Pontiac 6000, STE models, equipped with Anti-Lock Brake System (ABS).
Involved 1986 model year vehicles may exhibit brake fluid seepage from the ABS pressure/warning switch which eventually can lead to loss of the brake system hydraulic pump motor. Additionally, on both 1986 and 1987 involved vehicles, the hydraulic pump motor and ABS electrical relays may have been exposed to water contamination during vehicle assembly. This condition can cause loss of the hydraulic pump motor and/or loss of the ABS function.
Loss of the hydraulic pump motor would, after accumulated pressure has been depleted (approximately 10-30 normal stops), result in a total loss of rear
brakes as well as power assist to the front brakes. The red "Brake" warning light would, before accumulated pressure has been depleted, illuminate and stay. ON. If this warning is not heeded, a loss of rear brakes at a time when minimum stopping distance is required could result in a vehicle crash.
An inoperative ABS electrical relay could cause loss of the ABS function, but normal power assisted braking would be retained. The amber "Anti-Lock" warning light would illuminate and stay ON.
To correct these conditions, on 1987 model year vehicles, both the ABS and hydraulic pump motor relays will be replaced. On 1986 model year vehicles, both the ABS and hydraulic pump motor relays and 30 amp fuses will be replaced. In addition, on 1986 models, the hydraulic pump motor assembly and pressure/warning switch will be inspected and, if required, replaced.
VEHICLES INVOLVED
Involved are certain 1986-1987 Pontiac 6000, STE models, equipped with Anti-Lock Brake System (ABS) within the following breakpoints:
YEAR PLANT FROM THROUGH
1986 Oshawa G9238623 G9323920
1987 Oshawa Six (6) vehicles listed
as follows:
H9200162
NOTE: The 1987 model year H9200514 vehicles listed require, H9200643
relay replacement only. H9200647
H9201003 H9201041
Involved vehicles have been identified by Vehicle Identification Number Computer Listings. Computer listings contain the complete Vehicle Identification Number, owner name and address data, and are furnished to the involved dealers with the campaign bulletin. Owner name and address data furnished will enable dealers to follow-up with owners involved in this campaign.
These listings may contain owner names and addresses obtained from State Motor Vehicle Registration Records. The use of such motor vehicle registration data for any other purpose is a violation of law in several states. Accordingly, you are urged to limit the use of this listing to the follow-up necessary to complete this campaign. Any dealer not receiving a computer listing with the campaign bulletin has no involved vehicles currently assigned.
OWNER NOTIFICATION
Owners will be notified of this campaign on their vehicles by Pontiac Division (see copy of Owner Letters included with this bulletin.)
DEALER CAMPAIGN RESPONSIBILITY
Dealers are to service all vehicles subject to this campaign at no charge to owners, regardless of mileage, age of vehicle, or ownership from this time forward.
Whenever a vehicle subject to this campaign is taken into your new or used vehicle inventory, or it is in your dealers ID for service in the future, you should take the steps necessary to be sure the campaign correction has been made before reselling or releasing the vehicle.
Owners of vehicles recently sold from your new vehicle inventory are to be contacted by the dealer and arrangements made to make the required modification according to instructions contained in this bulletin.