G 20 Van V6-262 4.3L VIN Z (1993)
Technical Service Bulletin # 93C56A
Date: 950101
Campaign - A/T Will Not Shift From Park (Warranty)
GMC NUMBER: 93-C-56A
GROUP: 7A Automatic Transmission
DATE: January 1995
SUBJECT:
TRANSMISSION WILL NOT SHIFT FROM "PARK" POSITION
MODELS:
1993 M/L VAN AND G VAN WITH CRUISE CONTROL (K34)
THIS BULLETIN CANCELS AND REPLACES BULLETIN 93-C-56 ISSUED NOVEMBER, 1994. ALL COPIES OF 93-C-56 SHOULD BE
DESTROYED.
The Warranty Information has been revised. The parts allowance statement has been removed. To claim parts allowance please follow the procedure
outlined in Article 1.5.2 Reimbursement For Parts in your Service Policies and Procedures Manual.
General Motors has determined that CERTAIN 1993 M/L and G Vans may experience a condition, at temperatures below 32 degrees Fahrenheit, where
the transmission will not shift out of PARK with the brake pedal depressed. To prevent this condition from occurring, dealers will replace the cruise
control vacuum release valve and check and adjust the BTSI solenoid cable as needed.
NOTE:
The Brake Transmission Shift Interlock (BTSI) System is designed to prevent the automatic transmission from being shifted out of PARK unless the
brake pedal is depressed.
VEHICLES INVOLVED
Involved are CERTAIN 1993 M/L Vans and G Vans with cruise control (K34) built within the VIN breakpoints listed as shown.
The specific vehicles involved in this campaign have been identified by Vehicle Identification Number (VIN) Computer Listings. These listings are
furnished to all involved dealers with the campaign bulletin. Dealers should confirm vehicle eligibility through VISS (Vehicle Information Service
System) or SERVICENET prior to beginning campaign repairs.
DEALER CAMPAIGN RESPONSIBILITY
All unsold vehicles in dealers' possession and subject to this campaign MUST be held and inspected/repaired per the service procedure of this campaign
bulletin BEFORE owners take possession of these vehicles.
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.
Owners of vehicles recently sold from your vehicle inventory are to be contacted by the dealer and arrangements made to make the required correction
according to instructions contained in this bulletin.
In summary, whenever a vehicle subject to this campaign enters your vehicle inventory, or is in your dealership for service in the future, please take the
steps necessary to be sure the campaign correction has been made before selling or releasing the vehicle.
If the name and address of the owner of an involved vehicle was unavailable to GMC Truck Division at the time of campaign initiation, the dealer must
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
