CAMPAIGN: BRAKE S/LAMP SWITCH INSTALLATION & ADJUSTMENT
Subject: BRAKE STOPLAMP SWITCH
Models/Years: CERTAIN 1989 AND 1990 OLDSMOBILE CUTLASS SUPREME MODEL VEHICLES
CONDITION
General Motors has determined that a defect which relates to motor vehicle safety exists in certain 1989 and 1990 Oldsmobile Cutlass Supreme model vehicles. These vehicles may have a faulty brake stoplamp switch, which could result in the stoplamps not illuminating on application of the brakes. If this should occur in situations where a driver in a trailing vehicle is otherwise unable to recognize a braking action in sufficient time to respond appropriately, a vehicle crash could occur without prior warning. In some cases, failure of the stoplamp switch can result in the stoplamps staying on at all times.
In addition, in vehicles equipped with cruise control, a faulty stoplamp switch can result in resumption of the cruise control function upon release of the brake pedal. If this occurs, the cruise control feature can be disengaged by moving the cruise control switch to the 'OFF' position, or by reapplying the brake. Once the vehicle speed drops below 12 - 14 MPH, the cruise feature will be automatically disengaged. On vehicles equipped with manual transmissions, depressing and releasing the clutch pedal will also disengage the cruise control feature.
VEHICLES INVOLVED
Involved are certain 1989 and 1990 Oldsmobile Cutlass Supreme model vehicles built at Doraville within the breakpoints listed below:
Beginning Through & Year VIN Including ---- --------- --------- 1989 KD348608 KD400028 End-of Production (E.O.P.)
1990 LD300001 LD364433 Start-of-Production (S.O.P.)
Vehicles which Oldsmobile records indicate were previously repaired under warranty with Stoplamp Switch P/N 10180504 are not included in this campaign.
All vehicles listed on the dealer printout will require correction. Other suspect vehicles should be checked for campaign involvement by utilizing the Vehicle Information Service System (V.I.S.S.).
DEALER ACTION
To prevent these conditions from occurring, dealers are to install an improved stoplamp switch on all involved vehicles.
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.
Whenever a vehicle subject to this campaign is taken into your new or used car inventory, or it is in your dealership for service, you are to ensure the campaign correction has been made before selling or releasing the vehicle.
Dealers are to contact owners of vehicles recently sold from your new or used vehicle inventory and arrange for the campaign correction to be performed.
SERVICE PROCEDURE
NOTICE: ALL OLDSMOBILE DEALERS ARE BEING SENT AN INSTRUCTIONAL VIDEO TAPE ON THE STOPLAMP SWITCH SETTING PROCEDURE. PLEASE BE SURE TO VIEW THIS VIDEO TAPE BEFORE PERFORMING THE PROCEDURE BELOW. FLEET WARRANTY STATIONS INTENDING TO PERFORM THE CAMPAIGN MAY OBTAIN THIS TAPE BY CALLING MR. HANK BOLSEN AT (313) 525-8200 BEFORE DECEMBER 14,1990.
Also, please have the tool shown in Figure 4 readily available.
STOPLAMP SWITCH REMOVAL AND INSTALLATION
1. Write down the owner's preset memory settings which will be lost when the battery is disconnected for reference later when resetting the memory functions. If a memory retention device is plugged into the cigarette lighter socket (such as "Memor-Eze"; Snap-On Tool YA960; or Kent-Moore KS295A), this step can be omitted.
2. Raise and support the hood.
3. Then (for the V-6), remove the air cleaner assembly, and with the ignition in the "off" position, disconnect the negative battery cable. Removing the air cleaner on the Quad 4 is at the technician's discretion.
4. Enter the passenger compartment and remove left side sound insulator panel and slide steering shaft protective sleeve towards the front compartment wall.
5. Remove the air distribution tube and pull down. Remove the retainer clip holding the stoplamp switch to the column bracket.
6. Disconnect the switch arm from the pedal assembly by pushing the arm over and off the brake pedal pin. Release the switch by pulling down and releasing the top snap clip.
7. Disconnect the four wire and two wire electrical connectors from the switch (the connector position assurance - CPA - locking pins must also be removed). The two wire connector is present only on vehicles with cruise control.
8. Remove the Brake Stoplamp Switch Assembly.
9. Obtain a new Brake Stoplamp Assembly, P/N 10180504. If vehicle is equipped with cruise control, connect the two wire connector and CPA locking pin to the new switch. Do NOT install the four wire connector at this time.
10.Install new switch assembly by pushing switch up until seated into top snap clip. Do not attach the switch arm to the pin on the brake pedal assembly at this time.
NOTICE: Make sure the brake switch is NOT adjusted (metal clip on actuator should NOT be engaged with the serrations on the bottom of the carrier), as shown in Figure 2, Cutaway View (A). Otherwise it will be necessary later to perform the "STOPLAMP SWITCH ADJUSTMENT" procedure.
11. Install the retainer clip which holds the switch to the steering column bracket. Push the brake pedal down (forward) to the floor pan and install the switch arm over and onto the brake pedal pin.
12. Slowly pull the brake pedal all the way rearward and listen for the switch to ratchet to the set position. At least three (3) clicks of the ratchet must be heard.
13. Connect the four wire connector and CPA locking pin.
14. Reinstall the air distribution tube. Position the steering shaft protective sleeve.
15. Reconnect the negative battery cable. If a memory retention device was not used, please reset (to the extent possible) all devices that lost their memory after the battery was disconnected (such as radio preset stations, electronic a/c, Driver Information System, and clock).
16. Inspect the stoplamp switch operation. If stoplamps do not operate properly, refer to the "STOPLAMP SWITCH ADJUSTMENT" section of this bulletin. If the stoplamps do operate properly, continue to step 17.
17. For vehicles equipped with cruise control, check the setting of the cruise control vacuum dump switch. With the brake pedal at rest, make sure the plunger is fully seated into the barrel. If it is not fully seated, push the dump switch forward until the plunger is inside the barrel and then pull rearward on the brake pedal to properly set the switch. If the plunger is already fully seated into the barrel, the dump switch is already properly set and no further adjustment is required.
18. Install left side sound insulator panel.
19. Return to the engine compartment and install air cleaner assembly (if required).
20. Install a Campaign Identification Label.
21. If the vehicle has a V6 engine, set the parking brake, and secure the drive wheels. Then connect a Tech 1 to the ALDL and perform the idle learn procedure as listed in the Tech 1 manual.
STOPLAMP SWITCH ADJUSTMENT
Figures 1 through 5 may be helpful in performing this procedure.
1. Depress brake pedal (push forward) as far as possible and hold.
2. Using a stiff wire with a hooked end (See Figures 4 and 5), gently pull the switch set lever forward (toward front of vehicle), and listen for an audible click indicating release of the automatic adjustor.
NOTICE: If no click is heard, release the brake pedal and repeat the above procedure.
3. After the release of the automatic adjuster, slowly pull the brake pedal all the way rearward. Listen for the switch to ratchet into the set position (setting the stoplamp switch). At least three (3) clicks of the ratchet must be heard.
4. Inspect the operation of the stoplamps. Stoplamps should operate at a maximum brake pedal travel of 25 mm (1 in.) and throughout the remainder of the pedal travel. If the stoplamps do not operate properly, repeat the switch adjustment procedure one more time. If the switch still falls to operate properly, refer to the "STOPLAMP SWITCH ADJUSTMENT CHECK" chart on page 5.
If stoplamps do operate properly, return to the "STOPLAMP SWITCH REMOVAL AND INSTALLATION" procedure above and continue with Step 17.
CAMPAIGN IDENTIFICATION LABEL
Each label provides space to print the campaign number, and the five (5) digit dealer code of the dealer performing the campaign. Insert this information with a typewriter or ballpoint pen. When installing label, clean and dry the surface of the radiator support tie bar and apply the campaign label where it is readily visible.
PARTS INFORMATION
To initiate the campaign, it is anticipated that GMSPO will preship to each dealer a package of five brake stoplamp switches. These parts will be billed to the dealer's parts account.
To ensure that additional parts your dealership may require are obtained as soon as possible, order them from GM Service Parts Operations (GMSPO) on a C.I.O. order, with NO special instruction code, but order on an advise code (2). Use the following part number:
Description Part Number Quantity Per Vehicle ------------- ----------- -------------------- Stoplamp Switch Assembly 10180504 1 (SWITCH, S/LP & TRANS CONV CLU & CRCONT)
VIDEO TRAINING TAPE
Each dealership will be sent one video training tape at no charge. Fleet warranty stations intending to perform the campaign may obtain this tape by calling Mr. Hank Bolsen at (313) 525-8200 before December 14, 1990.
OWNER REIMBURSEMENT
Customers may request reimbursement for prior replacement of the Stoplamp Switch for the condition described in this Product Campaign Bulletin. Owners must submit original documentation that reasonably confirms the amount of unreimbursed repair expenses, a description of the repair, the date of the repair, and the person or entity who performed the repair to receive reimbursement.
Claims for customer reimbursement on previously paid repairs are to be submitted according to the Warranty Claim Information instructions. Use the "Owner Reimbursement" labor operation and list all owner expenses concerning previous repairs in the net items column of the warranty claim.
NOTE: When a customer requests reimbursement, and the vehicle is still available, dealers are to examine the documentation presented to determine if Switch P/N 10180504 was used in the repair (if Switch P/N 10180504 was installed, submit for V6372). If the part number used in the repair was other than P/N 101 80504, or is unknown, then the campaign must be performed on the vehicle (V6370). The part number can NOT be determined by inspecting the switch on the vehicle. Submit V6372 ONLY if the customer's documentation confirms that Switch P/N 101 80504 was installed.
WARRANTY CLAIM INFORMATION
Only one "V-op" is to be submitted for each involved vehicle. The "T-op" may be submitted, if applicable, in addition to one V-op.
REPAIR PERFORMED TOT-PTS FC LAB-OP LHRS ---------------- ------- -- ------ ---- Install and Adjust Stoplight Switch 96 V6370 0.7*
(Prior Repair) Review Repair Order - 96 V6372 0.2* 10180504 Switch Already Installed
Reimbursement For Prior Repair 96 T1 690
* .1 hour for clerical administration may be added to the published labor hours.
* .1 hour for V6 Engine idle Learn Procedure (as required) may be added to the published labor hours.
Parts Allowance: Current dealer price, plus 30% allowance for handling.
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.
