CAMPAIGN: 700R4 A/T ERRATIC SHIFT - MISS.THROT.VALVE BUSH.
1984 C/K 15-25, G25 and S/T 15 MODEL TRUCKS EQUIPPED WITH RPO MXO
General Motors had determined that some 1984 C/K 15-25, G25 and S/T 15 model trucks equipped with a 700 R4 automatic transmission (RPO MXO) may have been assembled without a throttle valve bushing in the transmission valve body. A missing bushing can cause erratic shifting. If the transmission continues to be operated in this condition, it could result in premature transmission failure.
VEHICLES INVOLVED
Involved are certain 1984 C/K 15-25, G25 and S/T 15 model trucks equipped with a 700 R4 automatic transmission (RPO MXO) and built within the following assembly plant and VIN break points.
Plant From Through ----- ---- -------- Flint (Line 1) EF716986 EF717156 Flint (Line 2) EF533268 EF533382
Also involved are the following vehicles:
Dealer Plant Vin Code ----- --- ---- Lordstown E7526547 42-023 Shreveport E8533384 40-598 Shreveport E8533406 53-127 Shreveport E8533425 42-323 Shreveport E8533432 53-250
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 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 neceseary 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.
If no owner's name and address were available to GMC Truck 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 General Motors Corporation 101 Union Street Plymouth, Michigan 48170
OWNER NOTIFICATION
Owners will be notified of this campaign on their vehicles by GMC Truck (see copy of Owner Letter included with this bulletin). If vehicles were inspected and/or modified previously, according to the instructions outlined in this bulletin, owners will not receive a letter. 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
TRANSMISSION IDENTIFICATION NUMBER INSPECTION
1. Inspect each truck for transmission identification number, which is stamped into the right rear oil pan rail.
Example:
4 ML 210 A T Year Model Julian Shift Modification Number Build Date Code Code
2. Dealers are to record mileage, date of inspection, truck VIN and complete transmission identification number of each vehicle inspected.
3. Trucks with a transmission Julian build date and shift code of either 209-C, 209-H, 210-A, 210-B, 210-C, 210-H, 212-A, or 212-B must have the transmission valve body inspected to determine if valve body replacement is required.
IF TRUCK TRANSMISSION HAS OTHER TRAN ABOVE DATE/SHIFT CODES, NO REPAIR IS NEEDED. Stamp the letter "V" next to the transmission identification number.
TRANSMISSION VALVE BODY INSPECTION
4. To inspect valve body, remove transmission oil pan and discard oil pan gasket.
5. Locate window (3/8" x 1/2") midway in valve body TV bore, on right side adjacent to TV linkage mounting bracket (see Figure No. 1). Inspect for presence of throttle valve sleeve (aluminum) at forward end of opening.
IF SLEEVE IS PRESENT, reassemble oil pan with new gasket P/N 8642360, and add five quarts of Dexron II transmission fluid. P/N 1051855, to be procured locally. Stamp the letter "V" next to the transmission identification number to complete service.
TRANSMISSION VALVE BODY REPLACEMENT
6. IF SLEEVE IS NOT PRESENT, valve body replacement is required. Contact your Zone Office with a complete list of truck VIN's inspected with the corresponding transmission identification numbers. Your Zone Office will make arrangement to ship transmission valve bodies and gaskets required to you at no charge. Five quarts of Dexron II transmission fluid, P/N 1051855, required for each truck repaired, is to be procured locally. Instructions for removal and replacement of the valve body are contained in the 1981 Light Duty Truck Service Manual, X-8432.
Dealers must verify that supplied valve body year and model number corresponds to transmission identification number of truck before installing. Do not order valve bodies from WDDGM.
7. Stamp the letter "V" next to the transmission identification number.
WARRANTY INFORMATION
Dealers should submit an accurately filled out Warranty Repair Order on each vehicle completed under this campaign.
Labor Operation **Net *Time Trouble Number Description Amount Allowance Code ------ ----------- ------ --------- ----
V2290 Inspect trans for 0.2 Hr. 96 I.D. Number. No further action is required.
V2291 R & R trans oil $12.65 0.7 Hr. 96 pan, inspect valve body. No further action required.
V2292 Inspect and $53.36 1.2 Hr. 96 replace valve body.
** This amount is to be entered in the Net Item Amount on the Warranty Claim and includes credit for transmission fluid and gasket if used, as well as 30% dealer allowance for valve body and gasket if required.
* For dealer to receive administration time allowance, add 0.1 HR to the Labor Operation Time Allowance.
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 (5) digit Dealer Code of the dealer performing the campaign service. This information may be inserted with a typewriter or ballpoint 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 Manul" issued April, 1983.
Dear GMC Truck Owner
General Motors has determined that some 1984 C/K 15-25, G2S and S/T 15 model trucks equipped with a 700 R4 automatic transmission (RPO MXO) may have been assembled without a throttle valve bushing in the transmission valve body. A missing bushing can cause erratic shifting. If the transmission continues to be operated in this condition, it could result in premature transmission failure.
To correct this condition on your vehicle, your GMC Truck Dealer will inspect the transmission and if necessry, replace the valve body. This service will be completed for you at no charge.
Instructions for this service have been sent to your GMC Truck Dealer. The labor time to inspect your vehicle is approximately 15 minutes. If the valve body must be replaced, it will take about 1 1/2 hours. Please ask your dealer if you wish to know how much additional time will be needed to process your vehicle.
The enclosed owner reply card identifies your vehicle. Presentation of this card to your dealer will assist in making the necessary correction in the shortest possible time. If you have sold or traded your vehicle, please complete the postage paid reply card and return it to us.
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.
