CAMPAIGN: 200-4R MANUAL VALVE LINK SEPARATION. GMC Truck Caballero 1987

For 1990-2009 cars

# CAMPAIGN: 200-4R MANUAL VALVE LINK SEPARATION

#### MODELS: 1987 CABALLERO WITH 200-4R TRANSMISSION (BUILT AT RAMOS ARIZPE)

The National Traffic and Motor Vehicle Safety Act, as amended, provides that each vehicle which is subject to a recall campaign of this type must be adequately repaired withm a reasonable time after the owner has tendered it for repair. A failure to adequately repair within 60 days after tender of a vehicle is prima facie evidence of failure to repair within a reasonable time. If the condition is not adequately repaired within a reasonable time, the owner may be entitled to an identical or reasonably equivalent vehicle at no charge, or to a refundd of the purchase price less a reasonable allowance for depreciation. To avoid having to provide these burdensome solutions, every effort must be made to promptly schedule appointments with owners and to repair their vehicles as soon as possible. As you will see in reading the attached copy of the letter which is being sent to owners, the owner is being instructed to contact the nearest GMC Zone Office if the dealer does not remedy the condition within five days of the mutually agreed upon service date. If the condition is not remedied within a reasonable time, they are instructed how to contact the National Highway Traffic Safety Administration.

#### DEFECT INVOLVED

General Motors has determined that a defect which relates to motor vehicle safety exists in some 1987 Caballero model trucks equipped with tlle 200- 4R transmission. These vehicles may have a manual valve link in the transmission which was improperly formed. This condition could lead to the link separating, resulting in a gear selection different from what the driver selects with the shift lever and what appears on the shift indicator. Also, the vehicle could be started when the transmissim is in gear. Thus when selecting a gear or starting the vehicle, it is possible for the vehicle to unexpectedly move in an unanticipated direction. Such unexpected movement could result in an accident without prior warning. To prevent this condition from occurring on vehicles involved, dealers are to replace the manual valve link. Refer to the Service Procedures in this bulletin.

#### VEHICLES INVOLVED

Involved are certain 1987 GMC Caballero model trucks built at Ramos Arizpe within the following VIN breakpoints:

#### Model Year From Through ---- ---- ------- 1987 HS801604 HS801757

The specific vehicles involved in this campaign have been identified by Vehicle Identification Number Computer listings. These listings are furnished to all involved dealers with the campaign bulletin.

#### DEALER CAMPAIGN RESPONSIBILITY

Dealers are to perform the required service described under Service Procedure for 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 ensure 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 correction according to instructions contained in this bulletin. If no owner's name and address were available to GMC Truck Division at the time of campaign initiation, the dealer will determine the owner's name and address from the dealership sales records. Please provide this information directly on the second copy of the listing next to the applicable VIN, so that our records may be updated and the appropriate notification mailed to the owner. This second copy should then be submitted to the address listed below in the previously supplied yellow campaign envelopes.

GMC Truck Division General Motors Corporation 101 Union Street Plymouth, Michigan 48170

#### OWNER NOTIFICATION

Owners will be notified of this campaign on their vehicles by GMC Truck Division (see copy of owner letter included with this bulletin). A listing of owner names and addresses has been furnished to the involved dealers to enable dealers to follow up with owners involved in this campaign. This listing may contain owner names and addresses obtained from state motor vehicle registration records. The use of such motor vehicle registration 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 this campaign.

#### SERVICE PROCEDURE

#### CAUTION:

Take appropriate steps to ensure that vehicle does not move in an unanticipated direction during preparation for service - be prepared to apply service brakes any time engine is running.

1. Raise and support vehicle on hoist.

2. Remove transmission oil pan bolts, pan and gasket. Drain fluid.

3. Loosen bolt (80) and turn roller and spring assembly (708) aside so that inside detent lever (704) can be moved freely. Refer to illustration.

4. Remove retaining pin (703) and loosen hex nut (707). Slide inside detent lever (704) inward on manual shaft (702).

5. Tip inside detent lever (704) away from control valve assembly (74). Remove/install manual valve link (705).

6. Tighten hex nut (707) and install retaining pin (703).

7. Align roller and spring assembly (708) and tighten bolt (80).

8. Install new transmission oil pan gasket and install pan and bolts. Torque bolts 8.0-14.0 Nm (6.0-10.0 lb ft).

9. Lower vehicle and fill transmissim to proper level with Dexron II transmission fluid or equivalent

#### PARTS INFORMATION

Parts are to be obtained from General Motors Service Parts Operation (GMSPO). To ensure that these parts will be obtained as soon as possible, they should be ordered from GMSPO on a C.I.O. order with no special instruction code, but order on an advise code (2).

PART NUMBER DESCRIPTION QUANTITY ------ ----------- -------- 8634326 Manual Valve Link 1 8657387 Transmission Oil Pan Gasket 1 1051855 Dexron II Transmission 7.0 Pints Fluid (1 Quart)

#### WARRANTY INFORMATION

Dealers should submit a warranty claim on each vehicle completed under this campaign.

LABOR OPERATION *TIME TROUBLE NUMBER DESCRIPTION ALLOWANCE CODE ------ ----------- --------- ---- V4260 Replace Link, Oil .7 hrs 96 Pan Gasket and Transmission Fluid

*For dealer to receive Administrative Time Allowance associated with this campaign, add 0.1 hours to the Labor Operation Time Allowance.

#### CAMPAIGN IDENTIFICATION LABEL

Each vehicle corrected 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 (5) digit dealer code of the dealer performing the campaign service. This information may be inserted with a typewriter or ball point pen. Each "Campaign Identification Label" is to be located on the radiator core support in an area which will be visible when the vehicle is brought in for periodic servicing by the owner. Apply "Campaign Identification Label" only on a clean dry surface.

#### ADMINISTRATIVE PROCEDURE

Procedures covering this campaign are outlined in Section V of your dealership's "GMC Truck Claims Processing Manual" #P 8719.

Dear GMC Truck Owner:

This notice is sent to you in accordance with the requirements of the National Traffic and Motor Vehicle Safety Act.

General Motors has determined that a defect which relates to motor vehicle safety exists in some 1987 Caballero model trucks equipped with the 200-4R transmission. These vehicles may have a manual valve link in the transmission which was improperly formed. This condition could lead to the link separating, resulting in a gear selection dffferent from what the driver selects with the shift lever and what appears on the shift indicator. Also, the vehicle could be started when the transmission is in gear. Thus when selecting a gear or starting the vehicle, it is possible for the vehicle to unexpectedly move in an unanticipated direction. Such unexpected movement could result in an accident without prior warning.

To prevent this condition from occuring it will be necessary to replace the manual valve detent lever link. This service will be completed for you at no charge.

Instructions for performing this service have been sent to your GMC Truck dealer. Please contact your dealer to arrange a service date. The labor time necessary to perform this correction will be approximately 45 minutes. Please ask your dealer how much additional time will be needed to process your vehicle.

Your GMC Truck dealer is best equipped to obtain parts and provide service to ensure your vehicle is inspected and/or corrected as promptly as possible. However, if you take your vehicle to your dealer on the agreed service date and they do not service this condition on that date or within five days, we recommend you contact your nearest GMC Truck Zone Office by telephone. The Zone Office will assist you and your dealer in getting your vehicle serviced. The telephone numbers of the Zone Offices are listed in your Warranty and Owner Assistance Information Manual.

After contacting your dealer and the Zone Office, if you are still not satisfied that we have done our best to remedy this condition without charge within a reasonable time, you may wish to write the Administrator, National Highway Traffic Safety Administration, 400 Seventh Street, S.W., Washington, D.C. 20590, or call 800-424-9393 (Washington, D.C. residents use 426-0123).

The enclosed owner reply card identifies your vehicle. Presentation of this card to your dealer will assist in making the necessary correction 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 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 safety and 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.