Checked fuses, flasher. Also i hear a switch clicking when I hit the brake pedal as well as the electronic dash board dims.no brake lights or tail lights at any time.When I say dim I mean almost completely going out but headlights are fine
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Re: no taillights or turn signals (blinking dash)
Lots of trucks have Problems with Grounds at the rear on the Frame, but yours sounds like A Headlight switch, Pull the switch and use a Volt meter to check for 12 volts on GM its normaly a Brown or green wire at the switch plug, Also Look FOR Burned look at that same plug if you see
this BURNED looking plug it Indicates that the problem was a Progressive one and useualy caused by Bad Ground Remember always Current Choses the path of leist resistance just like WATER so if it could not get a good ground the current backfed to the switch and Burned it out. I HOPE This Helps you out
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Sounds like you've got two different problems, because the brake lights and turn signals are on different circuits.
1. Brake lights. These should work whether the engine is on or off. Check fuse box for a blown fuse. If OK, check for voltage at one of the lights with the brake pedal depressed. If no voltage, brake light switch under dash probably bad. Fairly easy replacement.
2. Flashers/turn signals. The flashers should work with the engine on or off. If they don't, might be a bad fuse. If that doesn't fix it, might be a problem with the wiring connected to the turn signal switch, or the switch itself.
The fuse is always the first thing to check, then put turn signal on (and ignition on) step out side and see if the front or rear bulbs turn on but don't flash. Turn on emergency flashers on, do they work? If not could be the flasher relay. Brake lights are trigered by a switch under the brake pedal or wired to the brake master cylinder.
ck fuse for rear taillights tis under the dash lower left of steering wheel. or if you still have the manual look in there under fuses.
also look for a bad ground but i doubt that.. if it's both rear out.
fast flashing well here's a chart with all sorts of info. Problem What To Do
Turn signals light, but do not flash Replace the flasher
No turn signals light on either side Check the fuse. Replace if defective.
Check the flasher by substitution.
Check for open circuit, short circuit or poor ground.
Both turn signals on one side don't work Check for bad bulbs.
Check for bad ground In both housings.
One turn signal light on one side doesn't work Check and/or replace bulb.
Check for corrosion in socket. Clean contacts.
Check for poor ground at socket.
Turn signal flashes too fast or too slow Check any bulb on the side flashing too fast. A heavy-duty bulb is probably installed In place of a regular bulb
Check the bulb flashing too slow. A standard bulb was probably installed in place of a heavy-duty bulb
Check for loose connections or corrosion at the bulb socket
Indicator lights don't work in either direction Check If the turn signals are working
Check the dash indicator lights
Check the flasher by substitution
One Indicator light doesn't light On systems with 1 dash indicator:
- See if the lights work on the same side. Often the filaments have been reversed In systems combining stoplights with taillights and turn signals
- Check the flasher by substitution On systems with 2 Indicators:
- Check the bulbs on the same side
- Check the indicator light bulb
- Check the flasher by substitution
hope this helps. may want to print for future reference. :)
hope this helps.
Three places to look. 1) Brake lamp fuse, 2) Turn signal switch and 3) the brake pedal switch. Brake light power comes from the fuse up to the turn signal switch down to the brake lite switch on the brake pedal and then on to the light bulbs. Start by putting the 4 way flasher on. If the brake lites flash, then the bulbs are good. That eliminated the fuse too. so the problem is the other two.
turn on the emergency flashers(e-flashers)if they work check the bulbs at the same time.if this is good then check the fuses.you may have a problem with the turn signal flasher needing replacing.this is a different flasher than that of the e-flasher,looks the same but a different flasher.usually located on or around the fuse panel under the dash.the brake light problem could be a misadjusted switch or a bad switch.the switch is at the base of the brake pedal and has two wires to it.one wire will have power all the time and the other wire will only have power on it when the brake pedal is pushed.if not then the switch will need replacing.check for broken wires at the switch as these sometimes break causing a problem.
OK if the fuses are good , use a test light and check to be sure you have power at the fuse terminals. you'll check from ground to the terminal on top of the fuse. you should have 12vdc. then , check for power at your brake light switch on both terminals while the brake pedal is pressed, it is located located on the brake pedal assembly. also , check your hazard flasher switch to be sure it is not on. if it was on, check your flashers, both the turn signal and hazard flasher. If everything checks out , your problem is probably in your turn signal switch assembly located in your steering column.