Building a 1999 short bed with a 2012 6.2 and 6l80 with a 12 bolt help!
#21
yea i read the thread on speartech show that he kept stock ecm for gauges by "piggy back". what exactly does that mean? just keep the wires for gauges? and yes i have ecm and tcm since its inside the transmission. along with the complete oem harness. i been trying to find a way to get ahold of speartech for some advice, or maybe getting him to make a piggy back to keep my gauges
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