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no brake lights, changed bulbs, cked fuses, replaced pressure switch. on 2002 Chevrolet Trailblazer

is there a relay along with fuses for the brake light and if so where and what amp ?

Asked by for the 2002 Chevrolet Trailblazer
Check for voltage going 'to' the brake light switch first. If ok check for voltage comming 'from' the switch. If that is ok, suspect the cluster/signal light/ switch......If no voltage at the brk light switch,, you missed the open fuse, check them with a test light!! If you are not equiped to do these tests..take it in to the shop for these tests and repair!