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Turn signal intermittent problems

05-14-2009, 12:58 PM
I have a 2002 Impala, 3.4L. My turn signals intermittently will stop working. I have read a few threads here about the hazard switch/flasher relay going bad. I can always turn the hazards on, sometimes that makes the turn signal work again and sometimes it doesn't. Since the hazards always work, does that tell me the hazard switch/relay is good and that my turn signal switch is bad? The turn signal switch is $200+, the guys at Advance Auto couldn't even find the hazard switch in their system. Junk yard guys say they sell piles of new turn signal arm assemblies but have never heard of anyone replacing the hazard switch, but they would sell me one for $35 if I wanted to try it, I don't want to waste the money on either one if it doesn't fix the problem. Is there a way to test and make sure I know which part is bad??? Thanks for the help guys!

05-14-2009, 04:12 PM
If it was the Multifuction switch, hitting the Hazards wouldnt probably never fix the problem. The Hazard switch is also not a simple Relay inside. it's got an IC timer and other circuitry, so its more likley to fail.

05-14-2009, 09:50 PM
The hazard light switch is most likely the problem. I had the exact same symptoms, and replacing the hazard switch fixed it. Unfortunately, it is a GM only part, meaning you can only get it from a GM dealership. That's why Autozone didn't have it.
It is likely that any one you get from a junkyard will have the same problem. Supposedly, GM fixed the problem with later year cars, so if you do get a junkyard switch, get one from as new a car as possible.
When I bought mine from the dealer about 3 years ago, it was $75.

05-29-2009, 05:28 AM
I agree that it's more than likely the hazard switch. The relay works on current, so when you turn on the hazard switch the current is doubled by working all the bulbs, not just the bulbs on one side of the car. My '04 Malibu had the same problem, and replacing the hazard switch (relay is integrated in the switch) cured the problem, been fine for 3+ years.

05-30-2009, 03:21 PM
My buddy from work has a 2004 malibu. he had the same problems and replacing the hazard switch cured his problems also!!

06-05-2009, 01:49 PM
I replaced the hazard switch ($75 retail from Chevrolet) and have driven 3 days now without any problems, I for sure would have had it act up prior to replacing the switch so it looks like the problem is fixed. I even had a mechanic tell me I was wasting my money replacing the hazard switch because the turn signal unit is junk in those cars, glad I didn't listen to him! Thanks for the help guys!

06-06-2009, 04:02 AM
Thanks for letting us know the outcome of the repair and I'm glad it worked for you!

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