Stabilitrack issue ?

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Gary Ross

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My 2008 Tahoe LTZ 5.3 Flex fuel is having a word problem. It was running fine and then after cutting it off, it was like the battery power had suddenly drained and it would only make a single click and the interior lights were really dim. Took it to a local shop where they diagnosed it as a starter. The starter was replaced but I am having the same problem. The only way I can get it to crank is by removing the negative cable turn the light switch on and leave it awhile. But once I cranked it a few times it repeated the problem. The battery checks out fine but I noticed the negative cable terminal gets really hot. It only does this on the negative side. Before it does this I sometimes get a stabilitrack error. But it goes away when I recramrk it and all seems fine for a few cranking cycles and the whole process repeats. I am now getting a permanent check engine light which it wasn't doing before. These are the codes I'm getting ri GB ht now, C0900, C0561, B0790, U0140, U0121 Amy ideas are appreciated.
 
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