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Old 02-14-2019, 01:51 PM   #1
hounddogs!
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Join Date: Aug 2008
Location: NE Kansas
Posts: 886
Mismatched accel pedal & TAC

Tuesday night was the initial startup of the 68's new LS heart. It fired at cranking, then would die immediately when you released the key. I'm getting a P1518 code, communication problem between TAC and PCM.

After poking around the interwebs more, it looks like I have a 2006+ pedal and cable (6-wire rather than 10 for 2003-05)

1. Am I right in assuming that if the PCM isn't getting a signal from the TAC because the TAC isn't getting a signal from the pedal, I'd see P1518?
2. Does the older TAC have to see the APP 2, sensor 3 signal? i.e Can I just move the six newer APP wires to the corresponding cavities and run the older TAC with more empty spots?

The real question is whether it's better to buy another pedal and a 10-wire cable or can the 6-wire drive the older TAC?

Thanks for your input.
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