LS1 ECM Question.
06-19-2018, 06:52 PM
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LS1 ECM Question. LS1 question. Old truck has a 2000 Yukon LS1 ECM (I think) I get all kinds of trannie & torque converter errors. It has a freestanding trannie controller so I really don't need the ECM to talk to the trannie. Can I turn that part off? Or do I need a new program?
Also, when I get moderately on the throttle, it acts like it is about to shift down, retarding the timing maybe, runs rough like as if it were on 4 cylinders and won't run properly until I shut it off and the restart it. I bought it this way and do not know what programmer he used.
Anyone have any thoughts on this?
06-23-2018, 10:06 AM
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I have GM motor with 12573704 2-1 GM stamped on the Oil Pan engine also has 23D02 6B S06 cast into block.front passenger side and on teh driver side rear of block 126356729.
Any ideas of what motor is this and what may it have come off of?
Thanks
Bill
Any ideas of what motor is this and what may it have come off of?
Thanks
Bill
Last edited by Jane-Bill Ploetz; 06-23-2018 at 02:35 PM.