Campaign - Brake Booster Doesn't Have Low Vacuum Switch
Model Year 1985Bulletin No. 85-C-4
File In Group 5
Number 2
Date Feb. 1985
SUBJECT: POWER BRAKE BOOSTER DOES NOT HAVE LOW VACUUM INDICATOR SWITCH
MODELS AFFECTED: 1985 CENTURYS EQUIPPED WITH HIGH ALTITUDE (NA6) 3.0L V-6 ENGINE (ENGINE VIN CODE E)
General Motors has determined that some 1985 Centurys were assembled with an incorrect power brake booster which did not have a low vacuum indicator switch. Without this switch, the "brake" light in the instrument cluster would not be turned on if the vacuum in the booster should go to a low level.
To correct this condition, dealers are to install the correct power brake booster on vehicles involved. Dealers are to service all vehicles subject to this campaign at no charge to the owner, 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 dealership 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.
VEHICLES INVOLVED
Involved are certain early production 1985 Centurys equipped with 3.0L high altitude (NA6) engines (engine VIN code E) within the following serial numbers:
Oklahoma City Plant F6401287 through F6410969
DEALER MATERIAL
If your dealership has vehicles involved in this campaign, you will receive the following items:
^ List of all vehicles involved in this campaign shipped to your dealership.
^ One campaign identification label for each vehicle.
OWNER NOTIFICATION
Owners of vehicles involved in this campaign will be notified by Buick Motor Division (see copy of owner letter included with this bulletin).
TRANSFER OF VEHICLE
If a vehicle has been transferred or sold to another location, please forward vehicle information for this vehicle to your Buick Zone Office for handling with the proper dealer.
PARTS INVOLVED
Power brake booster, part number 18007292, is to be obtained from GMWDD for each vehicle involved.
DO NOT ORDER A PART FOR THIS CAMPAIGN UNLESS YOU HAVE A VEHICLE INVOLVED.
So that parts will be obtained as soon as possible, they should be ordered from GMWDD on a C.I.O. order with no special instruction code, but order on an advise code (2)..
WIRING CONNECTOR AND PLUG LOCATION:
TECHNICAL PROCEDURE
1. Open vehicle hood and cover fenders.
2. Disconnect hose from booster check valve.
3. Remove brake booster and install new booster, part number 18007292. Refer to page 5D2-2 in the 1985 Buick Chassis Service Manual.
4. Reinstall booster check valve hose.
5. Locate wiring connector and plug on to vacuum indicator switch. Refer to illustration.
6. Start engine and check for vacuum leaks and brake operation. Correct as required.
7. Install Campaign Identification Label.
Each vehicle modified in accordance with the instructions outlined in the Technical Procedure will require a campaign identification label. Each label provides a space to include the campaign number, the five-digit dealer code of the dealer performing the campaign service, and the date vehicle was campaigned. This information may be inserted with a typewriter or ballpoint pen. Install the label where it is readily visible.
DISPOSITION OF PART
Replaced part must be held for disposition by Buick contact personnel. Parts must have a claim tag attached, showing the repair order and the VIN of the vehicle from which they were removed.
WARRANTY INFORMATION
SUBLET
PART FAILED PARTS FAILURE LABOR LABOR OTHER DEALER
OPER. COUNT PART NO. ALLOW. CODE OP. NO. HOURS HOURS MTL. TWG.
Replace Brake **
Booster 1 18007292 * 96 V2530 .7 .1 --
* List current dealer price plus 30% of new replaced booster. ** .1 hour for administration.
February 1985
Dear Buick Owner:
General Motors has determined that some 1985 Centurys were assembled with an incorrect power brake booster which did not have a low vacuum indicator switch. Without this switch, the "Brake" light in the instrument cluster would not be turned on if the vacuum in the booster should go to a low level. To correct this condition, your Buick Dealer will install the correct brake booster on your vehicle. Please contact your dealer to arrange for a service date. This service will be done at no charge to you.
Instructions for making this correction have been sent to your dealer. The time required to replace the booster is about 40 minutes. Please ask your dealer if you wish to know how much additional time will be necessary to process your vehicle.
The enclosed owner reply card identifies your vehicle. Presentation of this card to your dealer will assist you in making the necessary correction in the shortest possible time. If you have sold or traded your vehicle, please let us know by completing the postage-paid owner reply card and returning it to us.
We are sorry to cause you this inconvenience; however, we have taken this action in the interest of your continued satisfaction with our products.