Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
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Apparently your post never got submitted. Can you tell me the concern with your suburban?
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So if I understand correct. At the brake switch the orange wire has no power but the STOP LP fuse is good and powered?
When you remotely power the white wire at the switch the brake lights still do not work?
I will not be able to move forward on the diag until you can verify those tests since your not confident. Below is that diagram you asked for.
Thanks for confirming all that info. No power to the STOP LAMP fuse under the hood, that means the fuse box has failed and needs to be replaced.
Remotely powering the brake switch white wire and getting no brake lights, leave the white wire powered and see if the VEH STOP and VEH CHMSEL fuses under the dash are powered.