'01 4L80E TCC Inhibited

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Posted to Transmission Forum on 4/8/2014 3 Replies

This truck will not engage the TCC. Tech 2 engine pids show "TCC lock-up---inhibit"; "TCC PWM--- inhibit".

There are no codes, all parameters are normal; ECT@190, TFT@140, TPS plausible, MAF plausible (no lock-up with MAF disconnected) brake switch good, pid... Login to read more.

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Vehicle Data

2001 GMC Sierra 1500 HD SLT 6.0L

Engine	6.0 L
Trans	4-speed Automatic (Electronic)

Vehicle Data

2001 GMC Sierra 1500 HD SLT 6.0L

Engine	6.0 L
Trans	4-speed Automatic (Electronic)

3 Replies Received (View Replies)

3 Replies Received (Hide Replies)

Vehicle Data

2001 GMC Sierra 1500 HD SLT 6.0L

Vehicle Data

2001 GMC Sierra 1500 HD SLT 6.0L