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p1860
So I have motor and transmission (5.3 and 4L60e) in. I got it running and am able to idle to get to temp to get the e fans working. It needs drive shaft and exhaust.
I check codes and I get a few of em which I think are expected. MIL, gas gauge, and O2 because none of that is hooked up.
The one that worries me is p1860. Any idea what could cause this? what should I look for to fix? Or should I wait until I can drive it
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