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Hi all. I swapped the engine on my 2014 Malibu and now no crank no start. I am getting U0100 and U0101 codes which means no communication with ECM/TCM. I checked all ground wires and fuses, everything looks good. Brand new battery. Also I tried replace ECM twice from 2 different sellers, still nothing. They come preprogrammed for your vin. I checked resistance on can bus getting 120om. Should be 60om. Any ideas? Thanks in advance.
 
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