1998 chevy Silverado. b rake lights come with ignition switch is on and go out when you step on the brake. they work normal when the ignition switch is off

SOURCE: Brake Lights Stay on 91 Chevy Silverado

there is a short in the wire underneath by the brake pedal keeping it on

SOURCE: Tail lights don't work on 1998 Chevy Silverado.

check the wiring from the tailights back to the fuse panel, it sounds like an open connection. if i recall correctly check under the dash on the drivers side near the fuse panel for a bunch of wires in a bundle and look carefully for a wire or two that are cut/shorted/or seperated, you can also check under the drivers side kick panel by the hood release.

SOURCE: Brake lights on my Chevy Silverado do not work but the Cab works

check grounds on rear light assy's

SOURCE: Brake lights on a 2003 chevy silverado 2500HD wont work.

same bulb but 2 seperate elements. wiring diagram u should be able to obtain from your local auto parts store like autozone(preferred)

SOURCE: i replaced the brake light switch on my 1994 chevy

it should be adjustable the switch should touch the pedal arm just enough to make light come on that way the slightest tap on the brakes make lights come on.

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