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  1. U0100 U0101 troubleshooting - Chevy and GMC Duramax Diesel …

    Aug 24, 2024 · B1517 5A - Chevrolet Diagnostic Trouble Code (DTC) Definition, Causes and Diagnosis B1517 5A Chevrolet Diagnostic Trouble Code (DTC) Definition, Causes and …

  2. AT light on - Code U0101 - Mazda3 Forums

    Mar 26, 2010 · AT light on - Code U0101 Jump to Latest 120K views 10 replies 5 participants last post by Bill Nov 28, 2020 H

  3. U0101 Trouble Code - Chevy and GMC Duramax Diesel Forum

    May 14, 2018 · Jump started the truck this morning and got the u0101 code immediately and "service brake system" on the dic. Watched some videos, ran the tests on the harness.

  4. Service stabilitrak. U0101 code - Chevy and GMC Duramax Diesel …

    Apr 2, 2018 · Service stabilitrak. U0101 code Jump to Latest 27K views 15 replies 6 participants last post by Cbrick Jul 31, 2020 W

  5. U0101 Lost Communication related to AC? No Crank/No...

    Jul 13, 2019 · 2005 LLY 200,000 miles Truck no start issue. U0101 Code Was driving AC stopped, truck limited to 3rd gear, hard shift between P/N/R/D, ABS/Brake light on...

  6. The infamous U0101 Code - Chevy and GMC Duramax Diesel Forum

    Feb 25, 2018 · U0101, while it points toward a loss of comm with the TCM, is commonly a main harness connection issue....which does all kinds of things down the line...like TCM, ABS and …

  7. U0101 code and limp mode - Chevy and GMC Duramax Diesel …

    Aug 9, 2023 · I have the dreaded U0101 code. No other codes. The truck goes into limp mode after driving a few miles. Goes away after sitting for a while. Rinse and repeat. I’m on the …

  8. Losing communication with TCM? - Mazda3 Forums

    Mar 31, 2024 · Anytime the car sits shut off for any length of time and is then restarted, I get an AT warning light on the dash, no gear indication, crappy shifting, and a U0101 code stored for …

  9. Check Engine Light and AT light : U0101 TCM issue - Mazda3 …

    Nov 7, 2015 · The code is U0101 that comes on. And does anyone know where to get a used tcm/pcm for a 2004 mazda 3 2.3l that comes WITH keys?

  10. Strange U0101 - Shift Range Inhibited - Chevy and GMC Duramax …

    Jun 30, 2023 · The U0101 along with the rear speed sensor not getting it's reading would coincide with each other. The only other issue that I do know of is the Trans harness with the fluid in it, …