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Chevy Suburban

Why might the brake lights and emergency flashers not work on a 1999 Chevy Suburban if all bulbs and fuses and the flasher relay are ok?

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2015-07-17 17:32:13
2015-07-17 17:32:13

The turn signal switch in the colum could be bad

COULD B the TurnSignal switch OR the Flasher 4 the Emergency FLASHERS (because there is 2(two) Flashers & the Brake light Switch on the Brake pedal could B Bad.(turnsignals Have there OWN Flasher)

the emergency flasher switch has 3 electrical contacts.sometimes they overheat and melt into the red flasher switch deforming the whole switch.unfortunatly the whole blinker and flasher needs to be replaced.

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Start by checkin all fuses and then go through all your wirein to rear lights and the check build recepticals for wear and corosion..

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this car may have separate flashers for the turn signals and the emergency flashers

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4 way flashers and turn signals both have a "flasher can" in the system to make the lights flash the turn signal and 4 way flashers are controlled independantly of each other try replacing the flasher can for the 4 way flashers it is obvious that the bulbs are ok because they work on turn signals

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The emergency flashers and the signal lights are separate systems. Each has it's own fuse, switch and flasher relay. If your turn signals light up but don't blink I would blame the signal flasher relay.

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Some cars have two flashers, one for the signals and the other for the emergency flashers. Be sure you replaced the right one. Also check the fuse the bulbs and lastly the signal switch.


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