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Re: OT: 2011 GMC Terrain, V6 -- U0100, U0101 and misfire codes (long Posted by MI-Roger [Email]  (#882) [Profile/Gallery]
(more from MI-Roger) on Tue, 30 Aug 2016 10:10:29
In Reply to: OT: 2011 GMC Terrain, V6 -- U0100, U0101 and misfire codes (long, pme   [Profile/Gallery]
, Mon, 29 Aug 2016 11:54:26
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The U0100 is a universal code for loss of communications with the ECU, or maybe for loss of communication with the engine since Ithe code must originate within the ECU.
U0101 is the universal code for loss of communications with the Transmission Control Module.
You may have a flaky ECU, a bad wiring harness, a bad connector in the wiring harness, etc. You may or may not actually have a mis-fire situation IF the mis-fire code is always accompanied by the U0100. sort of a chicken or egg scenario. are you having a mis-fire or is a mis-fire being reported because of sometign wrong with the ECU or wiring loom?
_______________________________________ Saabs owned: 2008 9-5 Aero Sedan, sold at 227K miles 2006 9-3SC 2.0T - Wife's daily driver 2000 Viggen Convertible - Summer Fun Car 1964 Quantum IV Formula Car - Retirement project 2000 9-5lpt Sedan, sold at 318K miles
, Mon, 29 Aug 2016 11:54:26, Tue, 30 Aug 2016 10:10:29 <-- Viewing This Message, Wed, 7 Sep 2016 10:11:26
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