Question: 4l80E tcc solenoid stuck - Diesel Place : Chevrolet and GMC Diesel Truck Forums
 
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4L80/85E Transmissions. 6L90 Transmission Discuss the 4L80/85E transmissions found in the 6.2/6.5L equipped vehicles and Duramax equipped vans. 6L90 discussion.

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Old 01-15-2020, 06:10 AM   #1 (permalink)
SwedenChey
Heat Sink
 
Join Date: Apr 2013
Location: Sweden
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4l80E tcc solenoid stuck

Hello!

As the title says, my tcc solenoid got constant 12v +.

Anyone have any ideas where i should start looking?

Truck works fine until i put the cable to the solenoid back on.

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1997 Chevrolet Suburban K2500 w/ 6.5L
4L80E

Last edited by OkDually; 01-15-2020 at 09:16 AM. Reason: prefix/sig
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Old 01-26-2020, 01:40 PM   #2 (permalink)
3strikes
Low Boost
 
Join Date: Jan 2020
Location: Snow Country between Sacramento CA and Carson/Reno NV US
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I am having a similar issue with a TFT sensor not grounding back to the PCM. I have not had time to trace the open or get to checking all my grounds. Do you have a good ground circuit? I would check that if you have not done so yet.

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1999 K1500 Diesel Suburban 4x4 Automatic Amigo Edition (made by our friends in Mexico)

Modifications:

PMC remote mounted under front bumper
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