Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
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So do the brake lights illuminate if you jumper the brake switch?
Just disconnect the brake switch connector from the brake switch and jumper the two wires and see if the brake lights come on
And the orange wire going to the plug does in fact have power on it?
yes it could be but we need to diagnose it. Does the orange wire going to the brake light switch have power on it?
So if the blue wire leaking the brake light switch has power with the brake pedal is depressed, then the brake lights should have power going to them. If not, there is an open or a break in the wiring between the brake light switch and brake lights.
Now it is possible that the cruise control is not working because there are codes in the brake control module related to the brake light circuit. I would check and fix the brake lights first before going after the cruise control. Also, be sure that the cruise control fuse is good.
I am going to be headed to bed soon. I will leave you with these two wiring diagrams. One shows the brake light fuse and circuit going to the center brake lights. The other shows the brake light circuit going to the computer and the cruise control circuit.
Here is another diagram that might help.
Please check this circuit and post your reply. I will check back with you first thing in the AM. Have a good night!
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