Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
can you send me your whole vin and is this factory trailer brake or an aftermarket one?
yah, these are very common for losing those they will usually have a p0571 or right around there pop up but your check engine light will not illuminate for this issue. are your regular brake lights still working?
can you snap a picture of where you are wired in. and have you tried your cruise with the controller unplugged?
if you still don't have cruise with that disconnected i would unplug the back of the seven pin connector and check once more but that will eliminate 90% of the problem areas, i can run you though a circuit test if you would like but if you don't have cruise with those out of the equation i can almost guarantee its the switch i put in a couple a week.