I replaced the bulbs fuses and brake light switch but the problem still persist. the third brake light still works the flashers and turn signals blink very fast
Sounds like a bad turn signal switch. I bet if you wiggle the turn signal lever while you have your foot on the brake pedal the left and right brake lights ill intermittently work.
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SOURCE: left turn signal problem on06' chevy tahoe
check your left light fixture.make sure you have a good contact.sometimes they burnout
SOURCE: left rear turn signal light on my 1999 chev. s10 is not working
any increase in bink speed is direcly related to a bulb being burt out.
SOURCE: 99 Chevy Tahoe... Rear turn signals, brake lights, and hazards
I had this problem, and to be honest, it happened to the left side about a week later...it's the board that the bulbs plug into...it's a very common problem with this model. So popular that you can normally get the socket board off the shelf at a parts store! it's extremely simple to replace, and I replaced all the bulbs at the same time!
SOURCE: I have A 2000 Chevy 3500 Express Van and the brake
Hi,
When you said that you checked the brake switch, did you check it live? Meaning verified live power to the switch, press switch, and then power came out the other terminal?
If so, also verify zero power on brake press, at the offending brake light bulb terminal. You must verify the test light each time you move it...leave running lights on...
After verifying that there is no power coming, after the brake is pressed, note the wire color and find it where it comes to the steering column and test there... This would eliminate wires and connections between front and the rear of the vehicle, unlikely, but needs to be tested.
After verifying no power at that terminal, then yes the t/s switch is certainly suspece. This may be the time to get a mechanic to verify and replace the switch, there are locks, tilt mechanisms, air bags, column bearings, etc involved. Failures risk loss of vehicle control (locking or binding for example.)..
Hope this gets you going in the right direction.
Testimonial: "Thank You. I tried those things and it seemed to be the Emergency Flasher switch in the multi function switch."
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