CAMPAIGN:INOP. CANISTER PURGE (TVS) REPLACE SWITCH

Models: 1984 Chevrolet Monte Carlo, Camaro and Pontiac Grand Prix, Firebird and Parisienne Equipped with 5.0L (RPO L69, VIN Code G) and NA5/NA6

TO: ALL AFFECTED DEALERS:

General Motors of Canada has determined that certain 1984 Chevrolet and Pontiac vehicles may experience an inoperative canister purge Thermo Vacuum Switch (TVS). An inoperative canister purge TVS can affect the intended function of the evaporative emission system.

To prevent the possibility of this condition occurring, the canister purge TVS will be replaced on all involved vehicles.

VEHICLES INVOLVED:

Involved are all 1984 Chevrolet Monte Carlo, Camaro; and Pontiac Grand Prix, Firebird and Parisienne models equipped with 5.OL (RPO L69, VIN Code G) and NA5/NA6 engine produced from start-of- production 1984 Model Year through end-of-production 1984 Model Year.

All affected vehicles have been identified by the VIN listing provided to involved Dealers with this bulletin. Any Dealer not receiving a listing was not shipped any of the affected vehicles.

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 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.

CAMPAIGN PROCEDURE:

Refer to Section 4 of the Service Policies and Procedures Manual for the detailed procedure on handling Product Campaigns. Dealers are requested to complete the campaign on all transfers as soon as possible.

OWNER NOTIFICATION:

All owners of record at the time of campaign release are shown on the attached computer listing and have been notified by first class mail from General Motors. The listings provided are for campaign activity only and should not be used for any other purpose.

PARTS INFORMATION:

Parts required to complete this campaign should be ordered through regular channels, as follows:

Part Number Description Quantity/Vehicle ----------- ----------- ---------------- 10055876 Thermo Vacuum Switch i

PARTS AND LABOUR CLAIM INFORMATION:

Credit for the campaign work performed will be paid upon receipt of a properly completed campaign claim card, RAPID terminal or DCS transmission in accordance with the following:

Repair Code Description Time Allowance ----------- ----------- --------------- 2A Replace Thermo Vacuum Switch .4

Time allowance includes 0.1 hour for Dealer administrative detail associated with this campaign. Parts credit will be based on Dealer net plus 30% to cover parts handling.

SERVICE PROCEDURE:

1. Disconnect negative battery cable.

2. Drain coolant (save in clean container for reuse) to a level just below TVS.

3. Remove air cleaner.

4. Remove canister purge TVS (see illustration).

5. Coat new canister purge TVS (P/N 10055876) with thread sealant (P/N 992545) and install.

6. Reinstall air cleaner.

7. Refill coolant.

8. Reconnect negative battery cable.

9. Install Campaign Identification Label.

INSTALLATION OF CAMPAIGN IDENTIFICATION LABEL

Clean surface of radiator upper mounting panel and apply a Campaign Identification Label. Make sure the correct campaign number is inserted on the label. This will indicate that the campaign has been completed.

Dear General Motors Customer:

General Motors of Canada has determined that your 1984 Chevrolet Monte Carlo, Camaro; Pontiae Grand Prix, Firebird or Parisienne may experience an inoperative canister purge Thermo Vacuum Switch (TVS). An inoperative canister purge TVS can affect the intended function of the evaporative emission system on your vehicle.

To prevent the possibility of this condition occurring, the canister purge TVS will be replaced. This service will be performed for you at no charge.

This letter identifies your vehicle. Presentation of this letter to your Dealer will assist their Service personnel in completing the necessary correction to your vehicle in the shortest possible time.

Further assistance, if required, may be obtained from the General Motors Zone Office nearest you. Your vehicle Owner's Manual provides the location and phone number of each respective Zone Office.

We are sorry to cause you this inconvenience; however, we have taken this action in the interest of your continued satisfaction with our products.

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.