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lnb

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  1. yes inspect every wire and where the harness bends also
  2. OK UPDATE check the harness and plug that goes to the transmission if its broke or damaged in anyway replace it also look at the back of the plug for pins that may be backed out even just a little bit it will cause all kinds of stupid problems the rubber that keeps moisture from entering and keeps the pins held in should be seated all the way in the hole none of the rubber should be sticking out it should be flush or inset in its hole
  3. ok this 2011 2500hd is pissing me off im at a loss im the guy every one brings vehicles to when they cant figure it out this one has me stumped Iv been doing this for 22 years and have never installed a transmission and then had electrical or fuel issues has anyone figured this out
  4. WELL STILL HAVE NOT FIGURED THIS PROBLEM OUT BUT WORKING ON IT NOW I PULLED THE INTAKE MANIFOLD OFF NOTICED WAY TO MUCH OIL IN INTAKE THERE IS A TSB FOR LEFT VALVE COVER PCV SYSTEM LETTING OIL BYPASS AND GO INTO INTAKE IM WONDERING IF THIS AFFECTS THE AIR FLOW INTO THE INTAKE THAT WOULD NOT BE PICKED UP BY THE MASS AIR FLOW FOR ADJUSTMENT AND CAUSE A LEAN CONDITION ANY THOUGHTS ??
  5. Having the same problem on 2011 2500 hd 6.0 mine is bank 2 o2 sensors flat line idles rough pops through intake under load then like a flip of the switch it idles fine and runs great. replaced o2 read voltages checked crank sensor went through wiring harness bla bla bla i decided to clear codes fire it up pull plug on throttle body it idles fine throws no o2 codes at all only code is the tbs code of course changed throttle body did relearn lasted a day went back to doing the same thing changed for second time no difference this all started after putting and brand new transmission from gm in it and have tcm flashed
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