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When the turn signals quit working pull up , down , front to back an back to front on the turn signal switch handle . Do they work when doing this ? Pontiac had bad switch . The power for the turn signals goes through the flasher / hazard module . Could be the switch or the module.
The HAZARD LPS fuse in the left hand instrument panel (LH IP) junction block supplies battery positive voltage to the flasher module, which is part of the hazard switch assembly. The TURN LPS fuse in the LH IP junction block supplies ignition positive voltage to the flasher module. The turn signal lamps may only be activated with the ignition switch in the ON position. When the turn signal switch is placed in either the left or right position, current flow is from the flasher module's output to the turn signal switch assembly. The flasher module then sends an on-off voltage signal to either the left or right turn signals and their instrument panel cluster (IPC) indicator. When the hazard switch is pressed, all the turn signal lamps will flash including both IPC turn signal indicators.
The turn signal flasher and hazard flasher are both incorporated into the hazard switch on the dashboard (yeah, they saw the money possibilities there). This is a common problem with the Impalas. Sometimes slowly pressing and releasing the hazard switch a few times will correct the problem. I have been told by some that if you get electrical contact cleaner and spray it into the hazard switch it helps also, Apparently dirt gets in and does the damage. Replacement of this hazard switch will fix this if nothing else works.
Do they work intermittently? Do your low beams go out sometimes when you put on turn signal? Do hazards work sometimes and if you play with switch they work off and on? I just had a problem with headlights would go off if I put on turn signal and if I jiggled the turn lever they would come back on and had trouble with all light working intermittently, brakes, turn and hazard. It was a Turn signal switch problem.The contacts in the switch were bad, all corroded and green when I took it apart. I know you wouldn't think this would affect brake lights but hey all run through this switch because of hazards and high beams. I got a new switch from dealer and all is working great now. Here's a link a link I used for switch replacement instructions.
http://www.jeepforum.com/forum/f11/write-up-replace-turn-signal-switch-97-xj-620147/ If it isn't a fuse or wiring issue I would look into the switch.
all those things go through a turn signal switch, on the fords i believe you can replace it without removing the steeering wheel, its kind of a big job
The turn signal switch assembly often causes this problem. If the hazard button is on your steering column it is part of the switch assembly and is called a multi-function switch . If it has a separate hazard button on the dash the can also cause the the same thing to happen. Try holding very slight pressure on the hazard button on the dash while the turn signal is on. If it starts working correctly replace only the the hazard switch. It is usually just snapped into the hole in the dash. If the hazard switch is on the column, than you should replace the multi-function switch. If it is equipped with an airbag, be sure the key is off while working on column. The multi-function switch should not require removal of the steering wheel on this car.
chevy had an issue with the blinkers and hazards not working all the time i found that when my turn signals stop working push the hazard switch until they blink then the turn signals start working again. its a faulty turn signal/hazard switch that needs to be replace costs about 30 bucks pretty simple to replace.
The turn signal flasher is bad. It is built into the hazard switch. Replace the hazard switch. The next time the turn signals quit turn the hazard switch on and off a few times and see if they start working.
it could be duel filament bulb that is blown and shorting inside the bulb to the other circuit, you may need to remove all indicator and hazard bulbs and check. I would also try a new flasher can
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