2006 Chevrolet Trailblazer Repair Question
My brake lights aren't coming on.
If your high mount was coming on, then your switch was good. Included is a schematic, check first that fuse 34(VEH STOP) in the rear block is good, and that there is power across it. Then move out to the rear lamp connectors, and that switched power and ground is available at the circuit boards.
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