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Turn Signal Issue.

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Old Feb 16, 2016 | 09:42 AM
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Default Turn Signal Issue.

I have a 2000 camaro z28.
Recently ive been having an electrical issue regarding the turn signals.
When I start the car, every light works fine until I use either the left or right turn signal. They work and flash but it returns back to a steady light. One is on the other off. From time to time they switch off. I recently switched the relay fuse because it was worst with the old one but the problem is still there. Whats the next thing I should look for or change or check?
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Old Feb 16, 2016 | 04:07 PM
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So, after you use your turn signals, sometimes one of your DRL's doesn't come back on solid afterwards?


What happens when you use your hazards? What happens when your headlights are on?
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Old Feb 17, 2016 | 12:22 AM
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Originally Posted by wssix99
So, after you use your turn signals, sometimes one of your DRL's doesn't come back on solid afterwards?


What happens when you use your hazards? What happens when your headlights are on?
It stays off till it comes back on to solid. Hazards work, same with headlights on.
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Old Feb 17, 2016 | 07:05 AM
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So what does this mean?

Originally Posted by Mr.z/28
until I use either the left or right turn signal. They work and flash but it returns back to a steady light. One is on the other off. From time to time they switch off.
When your turn your turn signal on, with the headlights off, what does the front light do, what does the rear light do, and what does your dash indicator do?


Originally Posted by Mr.z/28
I recently switched the relay fuse because it was worst with the old one but the problem is still there.
Do you mean that you switched the flasher? If so, did you replace it, or switch the left and right ones under the dash? If you replaced it, what did you put in there? (The part number and type makes a big difference.)
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Old Feb 17, 2016 | 07:09 AM
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What do you mean by "relay fuse"? There is a fuse (#2 20A TURN B/U) but no serviceable relay. There is also a fuse that is used by the DRL module to switch between turn signal and daytime running lights (#9 10A GAUGES). However, it doesn't sound like a fuse problem because it still works sometimes or intermittently for one side or the other. If a fuse was blown, it would never work.

Since your problem seems to involve the switching between turn signal and DRL and is intermittent, I would suspect that one or both of the two switching relays inside the DRL module may be failing. They are not serviceable and the whole module is expensive ($400 retail, $260 online) but I've seen them on eBay for $30. The part number is 10407669.
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Old Feb 22, 2016 | 12:38 PM
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Originally Posted by wssix99
So what does this mean?



When your turn your turn signal on, with the headlights off, what does the front light do, what does the rear light do, and what does your dash indicator do?




Do you mean that you switched the flasher? If so, did you replace it, or switch the left and right ones under the dash? If you replaced it, what did you put in there? (The part number and type makes a big difference.)
someone had mentioned replacing the relay fuse thats under the dash to see if that was the problem. turn signal flasher.
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Old Feb 22, 2016 | 12:42 PM
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Originally Posted by WhiteBird00
What do you mean by "relay fuse"? There is a fuse (#2 20A TURN B/U) but no serviceable relay. There is also a fuse that is used by the DRL module to switch between turn signal and daytime running lights (#9 10A GAUGES). However, it doesn't sound like a fuse problem because it still works sometimes or intermittently for one side or the other. If a fuse was blown, it would never work.

Since your problem seems to involve the switching between turn signal and DRL and is intermittent, I would suspect that one or both of the two switching relays inside the DRL module may be failing. They are not serviceable and the whole module is expensive ($400 retail, $260 online) but I've seen them on eBay for $30. The part number is 10407669.
Its definitely some interference. Where can I find this in the car, this module you are referring to? Maybe I can find it even less from a parted car.
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Old Feb 22, 2016 | 12:47 PM
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Its definitely the running day light now that you mention it. See pic below.
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Old Feb 22, 2016 | 05:00 PM
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As WhiteBird points out, the DRL module is 'spensive, (so is paying someone to trace it if you aren't familiar with doing the electrical probing, yourself) so I like to make sure the cheap stuff is 100% out of the way before digging in to it.


Are you saying that when you use the hazards, the lights work normally and then the DRL's both come back on like normal? Do you only get the one DRL on and one DRL off after you use the turn signals?

When you replaced the flasher, what did you replace it with. (Model number and type.) Are you sure you replaced the turn signal flasher (on the right side of the driver's legs) and not the hazard flasher? (to the left side of the driver's lets)
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Old Feb 23, 2016 | 07:16 AM
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Okay, as wssix99 says, we should start with the simple, inexpensive stuff. Is it always the same side that doesn't light? The front bulbs have two separate filaments that operate independently on two separate circuits. The dim filament is for the parking/running lights when the headlights are on. The bright filament is for the turn signals, hazard flashers and daytime running lights. Is your left side lamp working with the headlights but not with DRLs or signals? That would indicate a burned out bulb. The easy way to check is turn on your hazard flashers without the headlights and then walk around the car looking for the lamp that isn't flashing.

The DRL module is a black box about the size of a pack of cigarettes mounted to the defroster duct behind the radio (pull out the radio and reach through the opening to get it). But don't replace it until you've eliminated all the other possibilities.
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Old Feb 23, 2016 | 10:35 AM
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I replaced all bulbs. fronts and rears.
I replaced it turn signal flasher with the Novita/Hazard Warning Flasher from autozone, Part Number: LF12.
When I use the hazards the lights do work normally but they dont come back to normal. its stays the same as the picture above. a few minutes later it comes back to normal.
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Old Feb 23, 2016 | 12:05 PM
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Originally Posted by Mr.z/28
I replaced all bulbs. fronts and rears.
I replaced it turn signal flasher with the Novita/Hazard Warning Flasher from autozone, Part Number: LF12.
Yep. That should do fine. You switched the one to the right of the driver, correct? (Some people accidentally replace the one on the right side when having turn signal problems and that side is the flasher for the hazards.)


Originally Posted by Mr.z/28
its stays the same as the picture above. a few minutes later it comes back to normal.
This is telling. I assume the same thing happens when you use your turn signals, also - it winks at you but then both DRL's come back on normally after some time elapses.

If so ^ that's confirming that the DRL module is likely the culprit. (Probably a bad capacitor on the board, or something like that.)
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Old Feb 25, 2016 | 01:41 PM
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Yea top right.

Yea. I use it. One goes out for a several minutes then returns to normal.
So I guess Ill have to replace that module that was mentioned above. Ill see if I can find someone who is parting out a car and get it from them. Thank you for your time and valuable information.
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Old Feb 25, 2016 | 02:57 PM
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If you know anyone who can fix electronics, they may be able to repair it for you. It doesn't sound terminal - more like a bad component on the board.

This thread shows what the board looks like, on a unit that does have a terminal condition: https://ls1tech.com/forums/stereo-el...l-problem.html

The horrible thing about this is that the part is expensive, but the individual components on the board are worth less than $12.50, all together.
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