For 1990-2009 cars

# TORQUE CONV. CLUTCH WIRING SCHEMATICS

ON PAGES 28, 50, 229 AND 260 OF THE 1981 ELECTRICAL TROUBLESHOOTING MANUAL ARE SHOWN SCHEMATICS OF THE TORQUE CONVERTER CLUTCH CIRCUITS. OMITTED FROM THESE CIRCUITS ARE THE THIRD GEAR SWITCH THAT IS USED ON CERTAIN MODEL 350 AUTOMATIC TRANSMISSIONS. THIS SWITCH IS USED ON ALL DIESEL APPLICATIONS USING A 350 AUTOMATIC TRANSMISSION AND GASOLINE ENGINE USING 350 AUTOMATIC TRANSMISSION MODELS LA, LC, LO, LH AND KD. PLEASE REFER TO FIG. 13 AND 14 FOR CORRECTED TRANSMISSION CIRCUITRY. PAGE 7A3-15 OF THE 1981 CHASSIS SERVICE MANUAL SHOWS VIEWS OF ALL 350 AUTOMATIC TRANSMISSIONS INTERNAL WIRING AND SWITCH USAGE FOR TORQUE CONVERTER CLUTCH OPERATION.

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.