drive by wire issues
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Joined: Mar 2017
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drive by wire issues I am swapping a LM4 from an 03 trailblazer to a 82 C10. I sent my original harness off and had it cut down to a three wire system. I had the tac module that came with the motor when purchased but didn't have the harness that connects it to the pedal. So, I bought a 10 pin end from napa to plug into the tac module and I got the pigtail for the pedal out of a scap yard. Wired the plugs together according to a diagram I got off the internet. When I turn the key on the butterfly will open slightly but the pedal won't open it when I push the pedal.
Are you sure that the diagram you used was Trailblazer specific? Seems they did some weird things in terms of wiring...could be a bad pedal too. Throwing any codes?
Andrew
Andrew
DBW issues I swapped an LM4 into my '39 and had issues too. Found my problem was a mismatch in program to the 03 Trailblazer equipment. Usually when they do an update an 05 tune is used which means the pedal will no longer work with the TAC. See if you can borrow an 05 pedal to confirm that that is YOUR problem.
