For 1990-2009 cars

# CAMPAIGN: EVAPORATIVE CANISTER PURGE THERMO VACUUM SWITCH

#### MODELS/YEARS CERTAIN 1983 CUTLASS SUPREM E, CUTLASS CALAIS, CUTLASS CRUISER, DELTA 88, CUSTOM CRUISER, NINETY-EIGHT AND TORONADO MODELS EQUIPPED WITH 5.0L ENGINES (RPO LV2, VIN CODE Y OR 9)

#### CONDITION

General Motors has determined that certain 1983 Oldsmobile model vehicles equipped with 5.OL engines may experience an inoperative canister purge Thermo Vacuum Switch (TVS). An inoperative canister purge TVS can affect the intended function of the evaporative emission control system.

#### VEHICLES INVOLVED

Involved are certain 1983 Oldsmobile Cutlass Supreme, Cutlass Calais, Cutlass Cruiser, Delta 88, Custom Cruiser, Ninety-Eight, and Toronado models equipped with 5.0L engines (RPO LV2, VIN Code Y or 9) produced from the start-of-production through the end-of-production.

#### DEALER ACTION

To prevent the possibility of this condition occurring, dealers are to replace the canister purge TVS on all involved vehicles.

If there is evidence of intentional disablement of the evaporative 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 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 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 used vehicle inventory and arrange for the campaign correction to be performed.

#### SERVICE PROCEDURE

1. Open hood and install fender blankets.

2. Disconnectnegativebatterycable.

3. Drain coolant (save in a clean container for reuse) to a level just below the TVS. Drain coolant according to the procedure and CAUTIONS listed in the 1983 Oldsmobile Cutlass, Delta 88, Custom Cruiser, Ninety-Eight, Toronado Chassis Service Manual on pages 6B-5 and 6B-6.

4. Remove air cleaner.

5. Remove A/C Compressor support brace.

6. Disconnect vacuum hoses from canister purge TVS and remove TVS (see appropriate Figure). Use TVS switch socket wrench J 26435 (or J 26435-A), or equivalent 7/8" socket with a slot in the side.

7. New canister purge TVS Part Number 22536551 has the threads precoated with sealant. If the threads are not precoated, then coat with thread sealant Part Number 1052080 or equivalent. Install using TVS switch socket wrench J 26435 or equivalent.

8. Reinstall vacuum hoses to TVS as shown in Figure 3. Hose routings should be as shown in the applicable Figure (1, 2, or 4).

9. Reinstall air cleaner insuring all hose and electrical connections are made.

10. Reinstall A/C Compressor support brace.

11. Refill coolant, following the procedure and CAUTION listed on page 6B-6 of the 1983 Oldsmobile Cutlass, Delta 88, Custom Cruiser, Ninety-Eight, Toronado Chassis Service Manual.

12. Reconnect negative battery cable.

13. Install a Campaign Identification Label.

14. Remove fender blankets and close hood.

#### 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 ensure parts 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 ----------- ----------- -------------------- Switch, Thermo Vacuum Canister Purge 22536551 1

WARRANTY CLAIM INFORMATION

Pc PART-NO. TOT-PTS TC LAB-OP LHRS ST SUBLET -- --------- ------- -- ------ ----- -- ------ Replace Switch, Thermo Vacuum Canister Purge

96 V4830 .2* -- ---

*.1 hour for clerical administration may be added to the above operation.

Parts allowance: Current dealer price, plus 30% handling allowance.

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.