Celebrity V6-173 2.8L (1989)
Torque Converter Clutch Solenoid: Technical Service Bulletins
A/T - Blown Fuses Due to Shorted TCC Wiring
Number:
89-261-8A
Section:
8A
Date:
September 1989
Corporate Bulletin No.: 977140
Subject:
POSSIBLE BLOWN VEHICLE FUSES ON CIRCUITS 420, 422, OR 446 DUE TO SHORTED TCC WIRING
Model and Year:
ALL 1989 VEHICLES WITH 4L60 OR 200R4 AUTOMATIC TRANSMISSION
TO:
ALL CHEVROLET DEALERS
This bulletin covers service and parts information for transmission Torque Converter Clutch (TCC) solenoid wiring which may exhibit a breakdown in
insulation. This loss of insulation and possible short to ground may cause conditions affecting the vehicle's transmission, electrical system and engine
performance. For example, the short may cause blown fuses and/or conditions such as loss of air conditoning, ECM, instrument cluster, etc.
Due to electrical design differences, each vehicle line may display unique conditions. It is also possible to have different conditions exhibited by each
division's vehicle within a vehicle line. A short in the TCC circuit will usually blow a fuse on the circuit containing the TCC solenoid. To help determine
which fuse may affect an individual model, refer to the "Diagnosis Information" section of this bulletin.
