When a hydraulic/mechanical fault occurs with one of these solenoids (as mentioned earlier), the diagnostic process begins with checking the operation of the solenoid and its related valve(s).

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TCC Trouble

1/16/17 11:05 AM

Companies who rebuild torque converters will tell you the hundreds of times their converters are unjustly blamed for a problem. 

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2005 and up G.M. Trucks equipped with the 4L60/65/70E transmission may exhibit a complaint of Torque Converter slip when the vehicle is hot, accompanied by a Diagnostic Trouble Code P0894, Component Slip. This complaint usually occurs after an overhaul and/or after the repair of the TCC Regulator valve bore.

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A 2009 BAS (Belted Alternator Starter) equipped vehicle may have a complaint of the engine stop/start system being inactive and the Malfunction Indicator Lamp (MIL) is illuminated.

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