Gen 3 Drive By Wire cruise control HOW TO

[notsolo]

Originally Posted by ls1nova71

Do you have a cruise control brake switch? Does your PSI harness have 2 separate brake switch wires?

I have the 4 pin brake switch, yellow brake wire, and purple tcc wire from ECM, only 1 brake switch wire. Yellow wire is on the 12volt when brakes applied, green power wire is connect to fuse box, power when key on. Checked those with a test light, they have power at the right time...tcc wire is on the 2nd set of wires on the brake switch, does wire placement matter?...Also tried red cruise switch wire as the 12v...Nothing. Thanks