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rodstored-72 · 11-16-2021, 11:18 AM

jj,
I have the factory "serial data access wake up" LScanbus wire (dkblu), the (2) HScanbus data wires (2500 & 2501) tan & tan/blk wires, and a 12v+ red/wht stripe wire and the (2) ground wires connected. the tuner software recognizes the power, but does not see the ECM. the port is itc billet made for the "newer" GMcanbus with the GM 6 wire pigtail. the wires are traced from the OG "x109 connector". More detail in my thread in the electrical section as well......

11-16-2021, 11:18 AM	#7
rodstored-72 chevy truck fan Join Date: Mar 2005 Location: Gilbert, arizona 85298 Posts: 1,970	Re: Engine wiring question(s) jj, I have the factory "serial data access wake up" LScanbus wire (dkblu), the (2) HScanbus data wires (2500 & 2501) tan & tan/blk wires, and a 12v+ red/wht stripe wire and the (2) ground wires connected. the tuner software recognizes the power, but does not see the ECM. the port is itc billet made for the "newer" GMcanbus with the GM 6 wire pigtail. the wires are traced from the OG "x109 connector". More detail in my thread in the electrical section as well......