Hi everybody. I know I'm not the first problem with blinker issues, I did a quick search and didn't really find what I needed. (That's not to say it's not here....it's early, still processing coffee). As the title says, my blinkers don't always blink. They work great 99% of the time, then, I'll be turning into my driveway or the store, whatever, and they just don't work. If I'm driving for a while, they sometimes play nice and decide to start working again.

I have noticed, if / when I park the car and start it back up, they are usually fine. "Dirty" or corroded switch maybe? Marvelous electrical gremlin? Aliens?

Just looking for some input or guidance.

Thanks a million in advance.

 

both arent working? or just flip flop?

 

both aren't working

left, right, front, back...nothing

very sporadic

 

Might be the switch in the stalk. When it acts up, try the hazard switch and see if they work then. It can help eliminate some trouble shooting.

 

Mostly likely culprit will be the hazard switch. When they are acting up punch the hazard switch in and out a few times roughly. If no results tap on the dash right above the switch. May or may not get them working. If so change out the switch. If not keep looking.

 

If no joy then drain and replace the blinker fluid.

 

99.99% it is the Hazard switch. I have a write up on 4 ways/options to address the issue at home. I will post it later for you.

Normally when there is an issue with the MF switch it is with only the left or right side not both.

Worked on dozens of these issues. Mr. Sam

 

Mine does the same thing, I bump the dash directly above the hazard switch and it works again or i exercise the hazard switch. The switch is a pain to change,it is built into the hazard switch, some remove drivers side knee bolster and say they can reach under dash and access, must have small hands/arms, and some remove console and radio and access it through that opening or some install a hyper flash under the drivers knee bolster, that is the option I think I am going sooner than later. The hyper flash is around 60.00 and U don't have to tear the car apart to access it. There are a lot of threads on this if U can find them, I use google search and that usually directs me to this forum. Good luck with the fix. Also do a google search on C5 hyper flash bypass harness

Mr Sam is the man on this issue

 

Thanks a lot guys, much appreciated.

 

Of course!!!!! Why didn't I think of that!!!!

 

That is really not a very good idea. Not considering the cost for new fluid, which is outrageous, but it's getting very hard to find especially in the correct color.

 

I installed a flash under the drivers knee bolster from O'Realys. It was less then 15 bucks.
I got the information from CF member. Never again had a problem with the blinkers or the 4/ways.. It was about 4 to 6 weeks ago. Simple fix, and cheep........

 

I know what you mean, $18.95 for Blinker Fluid is outrageous. Almost makes you not want to use them. And they don't even have an LED compatible version!

Seriously though, I had the same issue and it was the hazard switch, I replaced the switch with a new ACDelco one ordered off Amazon for $18. Just upgraded to the new LEDs from RadioFlyer and had to install the hyper flash harness which was much easier than the hazard switch.

 

The other day I put on my right blinker way ahead of my intended turn because I didn't want the guy tailgating me to plow into my rear end. It went off by itself before I got the corner, and I thought maybe it timed out, that there was a timer on it and it shut itself off. It wouldn't go back on again, nor would the left one go on. When I got to where I was going I pulled the fuse to them, thinking maybe it blew, but it was OK, and the signals then worked again. The same thing happened again, but this time I checked the hazard signal to see if both the rear lights worked, and they did, as did the directionals when a retried them after I hit the hazard. It happened once more, the directionals either wouldn't work or quit, but they were functional again after hitting the hazard switch. They work fine now, but the hazard switch seems to bring them back to life after they quit. Maybe I need a new hazard switch too?

 

Sounds like the hazard switch,,,my coupe 01 did the same thing. Worked at times then got worst as time went on--(BC says to cycle the hazard switch about 50 times--worked for him) till mine no longer worked at all.. Just bought a blinker-relay and spliced it into the wire harness coming off the column from the turn signal. You cut into just (1) wire and splice it in. I have the info at home???? but it had to do with, as I recall, " a purple wire!!. The info is on the CF (very detailed ) and if I can track it down I will post it..

 

Type in this the search window at the top----- How to fix your hazard flasher/turn signal problem.... and/or "4 way flasher repair" lots of good info

 

Here it is....From CF member "Rebel 1" ( 09-05-2010, 01:22 AM) also scrool down..
By the way,, Thanks Rebel 1,,, works great .... mike v
Easy fix for this problem. Takes about 45 minutes and $9.00. I used Tridon flasher #EL12 from Autozone.
http://forums.corvetteforum.com/1569256474-post50.html

To do this Bypass, All YOU REMOVE IS THE KNEE PANEL, nothing else.

LINK:
http://www.ls1howto.com/index.php?article=24

 

OK, I see a lot of people just do not understand. First being that a Hyperflash mod (and others) only bypasses the turn signal function of the Hazard switch. If your actual Flasher in the Hazard switch is bad you will NOT have the "hazard" function by just installing a Hyperflash ( or other mod like above). I can go on if needed. The reason so many Hazard switches fail is NOT the internal Flasher but the internal contacts that feed it for the turn signal function. A different set of contacts feed the "hazard" function. I can post the schematic for those who can read it.

Here is the info I said I would post:

Here are 4 ways to fix a turn signal Hazard switch issue.

1. Remove the console and radio surround bezel and remove and replace the Hazard switch. Cost about $25 for a new switch and can be done in about 1 to 1 1/2 hours. Very easy to do, not hard or really complicated.

After removing the console and radio bezel you need to remove the radio. If you look at your replacement switch you will see the 2 green tabs on the top and bottom that lock it in place. You will be able to see the lower one when the radio is removed. Push up on the lower tab with a screwdriver while pressing in on the lower part of the switch and you can release the lower tab. Now the switch should be angled up on the end where the wiring connects. Now take a large flat bladed screw driver and place it at the top of the switch. Give the screwdriver a swift rap with a hammer. DON’T overdo it, just a reasonable hard hit and the switch will just pop out.

How to remove the console and bezel for access to the radio:

http://www.vetteessentials.com/instr...zel_howto.html

2. Buy a Hyperflash unit for about $65 and install it under the dash. Just requires removing the Knee bolster. About a 1/2 hour job.

3. Buy a used wiring harness that goes from the steering column to the hazard switch. Remove the knee bolster and unplug the existing one and install the replacement. Then install the new Hazard switch on the other end and just place it under the ignition switch where you can access it if you ever need Hazards. Dash will look stock since the old bad switch is still there. Cost is 25$ for switch and about 25$ for used harness. Takes the same time as installing a Hyperflash unit.

Here is info on the wiring harness:

GM P/N 12163776

http://www.corvetterecycling.com/product-p/233776.htm


4. Lastly, this is what I did. A relocation similar to #3 but I used the process in #1 to move the existing wiring harness to beneath the ignition switch where I placed a new Hazard switch. I then reinstalled the old Hazard switch in the dash for a stock appearance.

Here is a link for relocation:

http://forums.corvetteforum.com/c5-t...elocation.html


Again, Mr. Sam, P.E.

 

Thank you!!!!!

 

Thank you everybody for the input