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Why would the brake light come on while driving a 1992 Chevy 1500 350 5.7?



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The brake light switch is either worn or poorly adjusted. The switch is under the dashboard. The brake pedal mechanism SHOULD cause the switch to trip when you touch the brake pedal. You may need to replace the switch, but the good news is, it's not too difficult, just a couple hand tools. you talking about the tail lites or the dash lite? if its the dash lite your emergency brake might be slightly engaged.