HARSH 2-1 DOWNSHIFT DELAYED DOWNSHIFT INFORMATION. GMC Truck S15 Pickup - 4WD 1983

For 1990-2009 cars

# HARSH 2-1 DOWNSHIFT DELAYED DOWNSHIFT INFORMATION

STARTING MARCH 25, 1983, (JULIAN DATE 084), ALL THM 700-R4 TRANSMISSIONS WERE BUILT USING A NEW CONTROL VALVE ASSEMBLY AND SPACER PLATE TO CORRECT A HARSH MANUAL 2-1 DOWNSHIFT FEEL AND/OR DELAYED DOWNSHIFT CONDITION. WHEN SERVICING ANY 1982 OR 1983 THM 700-R4 TRANSMISSION FOR A HARSH MANUAL 2-1 DOWNSHIFT FEEL AND/OR DELAYED DOWNSHIFT, THE T.V. LIMIT PLUG, GASKET-(SPACER PLATE TO CASE), GASKET-(SPACER PLATE TO VALVE BODY), AND SPACER PLATE, MUST BE REPLACED TO CORRECT THIS CONDITION. (SEE FIGURE #1 FOR INSTALLATION OF THE T.V. LIMIT PLUG.) PART NAME PART NO. PART NO. IDENTIFICATION 1982 1983 1. T.V. LIMIT PLUG 8647453 8647453 2. GASKET-SPACER PLATE TO CASE 8642993 8642974 GASKET-SPACER PLATE TO VALVE 8642993 8642974 BODY 3. SPACER PLATE (9M2,9M4,9M5, 9M7,9MB,9MC,9MD,9ME,3Y2,3VA 8647455 8647455 "D" 3YK) REV 2/84 4. SPACER PLATE (9YA,9Y6,3YH 8654083 8654083 "E" 3Y9) REV 2/84 5. SPACER PLATE (ALL OTHER MODELS). 8647454 8647454 "C" 6. SPACER PLATE (9TN, 9TP 9M6,9MH,3TS,3TZ,3T8,3TP 8654084 8654084 "H" 3MV,3VJ,3TL)

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.