Question C5 Blinker Problem

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Wheely62

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My C5 blinkers work sporadically to rarely. When toggled manually they work and show at the rear but not the front. Any suggestions are appreciated.
Thank you.
 
OL Yeller said:
Actually, Murray, They blink faster if one bulb is out...go ahead,,,ask me how I know...LOL
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I'm going by my Camaro's. I'll bow to your superior knowledge on the C5's. It's often a crap shoot as to how similar the 4th Gen Camaros are to the C5's.
With the Camaro's they won't blink. If you replace the brake lights with LED's the cruise stops working! Ask me how I know! LOL
 
I know lots of C5's have issues with the front bulb holders themselves. They corrode and wreck the bulb at the same time. Difficult to get to them, not a lot of space there.

Good luck let us know.
 
Thanks guys.
If it’s the front do you have to just replace the bulb or both the bulb and holder?
Is the relay easy to get to?
 
Wheely62 said:
Thanks guys.
If it’s the front do you have to just replace the bulb or both the bulb and holder?
Is the relay easy to get to?
Click to expand...
The blinker relay on the C5 is integrated with the hazard lights in behind the hazard light button. It is a pain to get at without removing the dash. Some say they have had success removing the radio and reaching up with a tool and popping the clips off to get it out but other than that, I have no hands on experience with the C5. Good luck.
 
Wow. That sounds crazy. I think I will start by replacing the front bulbs, then the back ones and see what happens. As a last resort I might have to tackle the relay situation.
Thanks for your help.
Rruuff Day said:
The blinker relay on the C5 is integrated with the hazard lights in behind the hazard light button. It is a pain to get at without removing the dash. Some say they have had success removing the radio and reaching up with a tool and popping the clips off to get it out but other than that, I have no hands on experience with the C5. Good luck.
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There are 11 ground locations on the C5. Here is the location diagram.
A quick Youtube/Google search will net you what each one is for.
Good luck...Keep us up to date on your progress
c5 grounds.jpg
 
I am having the same issue. I am getting power from the fuse box to the hazard switch but it stops there. The juice has to be able to get to the multi function switch located inside the steering wheel. But it is not getting the juice because of the failure at the hazard switch. i am told the hazard switch has been known to fail in the C5s. I was able to purchase a new switch from Reilly Autoparts online for less than $50.00. You need to pull the radio out and switch out the old with the new. I will be doing that tomorrow myself.
 
To further clarify. It is the multi function switch located inside your steering column that controls both your blinkers and your brakes. I like you are having intermittent failure in the blinkers and brakes. The rear sometimes work but the front never do. The electrical flow follows a course from your fuse box thru the hazard switch in the middle of your dash above the radio and then into the multi function switch inside the steering column. The breakdown again is most likely at the hazard switch which is where my problem lies.
 
CorvetteLola said:
To further clarify. It is the multi function switch located inside your steering column that controls both your blinkers and your brakes. I like you are having intermittent failure in the blinkers and brakes. The rear sometimes work but the front never do. The electrical flow follows a course from your fuse box thru the hazard switch in the middle of your dash above the radio and then into the multi function switch inside the steering column. The breakdown again is most likely at the hazard switch which is where my problem lies.
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Please take a few pictures while you are in the process and post here so that we all can have a visual of the repair for this issue. Thanks
 
OL Yeller said:
Please take a few pictures while you are in the process and post here so that we all can have a visual of the repair for this issue. Thanks
Click to expand...
OL Yeller said:
Please take a few pictures while you are in the process and post here so that we all can have a visual of the repair for this issue. Thanks
Click to expand...
Dang. I really should have done that. Unfortunately it is too late. But I can say that the hazard switch replacement corrected my intermittent blinker and brake light problem. To fix you pop off the hazard button on the dashboard using a small flathead screwdriver. Behind it is the switch itself. You simply push the switch in and then is the tricky part. You have to get underneath the dash on the floor and pull the wire connected to the switch you had pushed in. Be careful for there is a lot of stuff behind there and you don’t want to break anything. You are in a very uncomfortable position when you do this. Remove the wires from the old switch and attach them to the new one. Then you feed the switch back up to its dash position and pop the button back into the dash. It took me about an hour to perform.
 
Wheely62 said:
My C5 blinkers work sporadically to rarely. When toggled manually they work and show at the rear but not the front. Any suggestions are appreciated.
Thank you.
Click to expand...
I had the same problem with my 2000. It’s an easy fix. You can purchase a device called a HyperFlash Harness from Corvette Depot. It’s easy to install under the dash beneath the steering wheel. It goes in line to your hazard relay and bypasses the relay. (The hyperflash has its own relay). It has the mating connectors that allow you to plug directly into the existing wiring. Your turn signals use the same relay as your hazards. Works great! Hope this helps.
 

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