Code u0 101, does not start?

18,000 MILES • 6.7L • 6 CYL • 4WD • AUTOMATIC
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BOWERS99
  • MEMBER
  • 1 POST
does not crank shows code u0 101.
Jun 3, 2023 at 1:26 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,246 POSTS
Hi,

Is that the only code present? Also, does the starter engage? The U0101 is a transmission control module (TCM) communication error. See pic below. I wouldn't think that would prevent the engine from starting, but anything is possible.

Note that in the pic, the code is followed by two additional numbers. By chance, did you notice those numbers when it was scanned?

Let me know.

Joe

See pic below.
Jun 4, 2023 at 3:42 PM
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