Got new alternator put on and the wire back on the starter now I am in limp mode and CODE u0101 will not clear out
Nov 28, 2025 at 1:49 PM
Starter went out and I left off the alternator wire off alternator to short out
BILLY BIDWELL
- MEMBER
- 1 POST
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It sounds like you may have shorted out a fuse or to, I would would by checking all fuses in both the inside on the under hood fuse panel. Also, would check the TCM electrical connector which can get water damage, so remove the connector to check for corrosion
Code U0101 (Lost Communication With TCM)
Here are the amin fuse to check
#14 - Transmission Control (20A)
#28 - PCM/TCM power
#6 - Ignition/Run (feeds multiple modules)
The TCM is under the dash on the drivers side. Please upload a short video in your response of the problem, so I can see what's going on :) Check out the images (below).
Code U0101 (Lost Communication With TCM)
Here are the amin fuse to check
#14 - Transmission Control (20A)
#28 - PCM/TCM power
#6 - Ignition/Run (feeds multiple modules)
The TCM is under the dash on the drivers side. Please upload a short video in your response of the problem, so I can see what's going on :) Check out the images (below).
Image (Click to enlarge)
Dec 1, 2025 at 1:32 AM
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