CAMPAIGN: IMPROPER CARBURETOR OPERATION

Model and Year: 1986 CHEVROLET MONTE CARLO "SS" MODELS EQUIPPED WITH 5.0L ENGINE (RPO L69) AND AUTOMATIC TRANSMISSION - ARLINGTON ONLY

TO: ALL CHEVROLET DEALERS

General Motors has determined some 1986 Chevrolet Monte Carlo "SS" models equipped with 5.0L Engine (RPO L69) and automatic transmission may have an improperly operating carburetor. The float needle seats in the carburetor may have been produced with a sharp corner. This can damage the viton tip of the float needle.

This condition can effect emission levels as well as driveability resulting in a no-start or stalling problem.

To correct this condition a new float needle and seat will be installed on all involved vehicles.

VEHICLES INVOLVED

Certain 1986 Chevrolet Monte Carlo "SS" models equipped with 5.0L Engine (RPO L69) and automatic transmission within the following vehicle parameters:

PLANT FROM THROUGH ----- ---- ------- Arlington GRIO0002 GR103798

Involved vehicles have been identified by Vehicle Identification Number Computer Listings. Computer listings contain the complete Vehicle Iden- tification 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 regis- tration 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 was not shipped any involved vehicles.

OWNER NOTIFICATION

Owners will be notified of this campaign on their vehicles by Chevrolet Motor Division (see copy of Owner Letter 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 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.

PARTS INFORMATION

Parts required to complete this modification are to be obtained from General Motors Warehousing and Distribution Division (GMWDD). To ensure that these 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 on an advise code (2).

PART NUMBER DESCRIPTION QUANTITY ------------ ------------ -------- 7035134 Float Needle and Seat 1

It is recommended that some quantity of parts be ordered upon receipt of this bulletin to allow for part availability upon owner request for vehicle modification.

SERVICE PROCEDURE

1. Remove air horn and gasket.

2. Remove solenoid plunger, metering rods, float bowl insert, and lean mixture adjusting screw.

WHEN REMOVING LEAN MIXTURE ADJUSTING SCREW, COUNT AND RECORD NUMBER OF TURNS IT TAKES TO LIGHTLY BOTTOM SCREW. USE J-28696-10 OR BT-7928 FOR THIS OPERATION. RETURN SCREW TO EXACT POSITION DURING REASSEMBLY.

3. Remove float assembly.

4. Remove needle and seat assembly using J-22769 or BT-30006M.

5. Install new needle and seat provided.

6. Install float assembly and set float level to 11/32".

7. Reassemble carburetor.

8. Perform system performance test as outlined in The 1986 Chevrolet Caprice, Monte Carlo, El Camino Service Manual (ST-384-86) Section 6E; page 6EI-A-4.

9. Install Campaign Identification Label per instructions in this bulletin.

CAMPAIGN IDENTIFICATION LABEL

Each vehicle modified in accordance with the instructions outlined in this Product Campaign Bulletin will require a "Campaign Identification Label." Each label provides a space to include the five digit dealer code of the dealer performing the campaign service. This information may be inserted with a typewriter or ballpoint pen.

CLAIM INFORMATION

Submit a Product Campaign Claim with the information indicated below:

** * Failed Parts Labor Labor Other Repair Performed PC Part No. Allow FC OP Hrs Hrs ---------------- -- -------- ----- -- -- --- ---

Inspect for campaign 00 V3300 .2 .1 involvement

Install float needle 1 7035134 00 V3301 1.3 .1 & seat as outlined in service procedure

*Campaign Administrative Allowance.

**The Parts Allowance should be the sum total of the current GMWDD Dealer Net price plus 30% of all parts required for the repair.

Dealers will automatically receive the correct labor and material allowance based on the labor operation performed.

Refer to the Cheyrolet Claims Processing Manual for details on Product Campaign Claim submission.

Dear Chevrolet Owner:

General Motors has determined some 1986 Chevrolet Monte Carlo "SS" models equipped with 5.0L engine (RPO L69) and automatic transmission may have an improperly operating carburetor. This condition can affect emission levels as well as driveability resulting in a no-start or stalling problem.

To prevent the possibility of this condition occurring on your vehicle, please contact your Chevrolet dealer to arrange a service date. Your dealer will install a float needle and seat in the carburetor. This service will be performed at no charge to you.

Should your dealer find that your emission system has been intentionally disabled at the time this correction is performed, you will be asked if you wish the system to be restored so that it will function as designed. The cost of such restoration will be your responsibility.

Instructions for making the correction(s) have been sent to your dealer. The labor time to perform this service is approximately one hour and twenty minutes. Please allow additional time for your dealer to process your vehicle. As mentioned above, please contact your dealer to arrange a mutually satisfactory service date.

The enclosed Owner Reply Card identifies your vehicle. Presentation of this card to your dealer will assist in making the repair to your vehicle in the shortest possible time. If you have sold or traded your vehicle, please let us know by completing the postage paid Owner Identification Reply Card and returning it to us so that we may update our records. Should your dealer not schedule a service date within a reasonable time, you should contact your nearest Chevrolet Zone Office either in person or by telephone for assistance. For your convenience the locations and telephone numbers of the zone offices has been enclosed with this letter.

To ensure you full protection under the emission warranty made applicable to your vehicle by Federal Law, and your right to participate in future recalls, it is recommended that you have your vehicle serviced as soon as possible. Failure to do so could legally be determined to be a lack of proper maintenance of your vehicle.

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

CHEVROLET ZONE OFFICES

WHEN CALLING FOR ASSISTANCE, PLEASE ASK FOR THE CONSUMER RELATIONS REPRESENTATIVE.

ATLANTA HOUSTON Chevrolet Customer Assistance 13101 N.W. Freeway 30007 Van Dyke Suite 101 Warren, MI 48090 Houston, TX 77040 1-800-222-1020 (713)460-7301 BIRMINGHAM INDIANAPOLIS 3490 Independence Hwy. 6910 N. Shadeland Ave. Homewood AL 35259 Indianapolis, IN 46220 (205) 287-5306 (317) 269-5031 BOSTON JACKSONVILLE Chevrolet Customer Assistance 6622 Southpoint Dr. S. 30007 Van Dyke Suite 200 Warren, MI 48090 Jacksonville, FL 33216 1-800-222-1020 (904)739-7711 BUFFALO KANSAS CITY 2615 Walden Avenue 10800 Farley Cheektowaga, NY 14225 Suite 100 (716)891-7182 Overland Park, KS 66210 CHARLESTON (913)451-4380 Chevrolet Customer Assistance LOS ANGELES 30007 Van Dyke 233 Wilshire Blvd. Warren, MI 48090 Suite 800 1-800-222-1020 Santa Monica, CA 90401 CHARLOTTE (213)393-9356 Chevrolet Customer Assistance LOUISVILLE 30007 Van Dyke 9100 Shelbyville Rd. Warren, MI 48090 Paragon Place, Suite 200 1-800-222-1020 Louisville, KY 40222 CHICAGO (502) 423-5858 475 Alexis R. Shuman Blvd. MEMPHIS Naperville, IL 60566 866 Ridgeway Loop Ave. (312)961-6380 Memphis, TN 38117 CINCINNATI (901)756-3360 Chevrolet Customer Assistance MILWAUKEE 30007 Van Dyke 333 Bishops Way Warren, MI 48090 Brookfield, WI 53005 1-800-222-1020 (414)784-2578 CLEVELAND MINNEAPOLIS 25000 Great Northern Corporate Center 7600 Metro Blvd. Suite 444 Edina, MN 55435 North Almsted, OH 44070 (612) 830-4044 (216) 265-5600 NEW ORLEANS DALLAS 35451-10 Service Road 130 E. Carpenter Freeway Metairie, LA 70002 Irving, TX 75062 (504)888-9013 (214) 659-5441 NORTH JERSEY DENVER 9 Sylvan Way 5460 S. Quebec St. Parsippany, NJ 07054 Suite 330 (201) 993-4155 Englewood, CO 80111 OAKLAND (303) 930-5720 39465 Paseo Padre Parkway DETROIT Fremont, CA 94538 Chevrolet Customer Assistance (415)498-5080 30007 Van Dyke OKLAHOMA CITY Warren, MI 48090 6307 Waterford Blvd. 1-800-222-1020 Suite 200 FARGO Oklahoma City, OK 73118 1111 38th St. So. (405) 841-5000 Fargo, ND 58103 OMAHA (701) 282-4451 10836 Old Mill Rd. Omaha, NE 68154 (402)399-5515

PEORIA 3425 N. Dries Lane Peoria, IL 61604 (309) 688-1021 PHILADELPHIA 851 Duportail Rd. Wayne, PA 19087 (215) 296-6600 PHOENIX 1625 W. Fountainhead Pky. Tempe, AZ 85282 (602)829-6201 PITTSBURGH 2 Penn Center W. Suite 200 Pittsburgh, PA 15276 (412)928-5125 PORTLAND* 10300 S.W. Greenburg Road, Suite 500 Portland, OR 97223 (503) 293-5000 RICHMOND Chevrolet Customer Assistance 30007 Van Dyke Warren,MI 48090 1-800-222-1020 SALT LAKE CITY 303 East South Temple Salt Lake City, UT 84111 (801) 534-7125 ST. LOUIS 83 Progress Parkway Maryland Heights, MO 63043 (314)895-8608/8609 SYRACUSE Chevrolet Customer Assistance 30007 Van Dyke Warren, MI 48090 1-800-222-1020 TARRYTOWN 2500 Westchester Ave. Purchase, NY 10577 (914)251-5121 WASHINGTON 1395 Piccard Drive Rockville, MD 20850 (301) 258-1444 CENTRAL OFFICES UNITED STATES Chevrolet Motor Division Consumer Relations Dept. Chevrolet Central Office Warren, Michigan 48090 (313)492-5500 CANADA Customer Services Department General Motors of Canada Limited Oshawa, Ontario LlJ 5Z6 (416)644-6624

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.