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Potential Tuner
LS3 swap E38 control no fuel pump relay command
I just recently completed swapping a G8 powertrain (LS3 auto E38) into a customers 52 Chevy. The problem is I'm not getting a ground signal from the VCM to trigger the fuel pump relay. If I bypass the relay it fires right up and idles, so I know the rest of the calibration is good. Did a continuity check on the circut and checked for signal right at the VCM still no ground. I'm sure I'm missing something int he Cal but I'm not sure what. This is the first time we've had this issue, but its also the first time we've used a G8 as a donor. Lots of little differences we ran across. Here is a copy of my calibration.
g83.hpt
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Tuner in Training
try to Disabble starter checks and also check VATS