Hyper Flash
Thread Starter
Melting Slicks
Joined: Oct 2015
Posts: 3,299
Likes: 769
From: Mead Wash
2020 C6 of the Year Finalist - Modified
C6 of Year Finalist (appearance mods) 2019
Hyper Flash
2012 GS. 4 way flashers work fine. RH front and rear turn signals work fine. LH front and rear turn signals hyper flash. New bulbs in F and R and still hyper flash turn signal only. GM says the 4 way flasher and the turn signal flasher are all in the 4 way flasher at the top of the dash between the air vents. Any one else ever have this problem and know the cure ? Thanks.
Race Director
Joined: Dec 2013
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Likes: 3,629
What builbs did you install, since if they are LEDs, then will need to install resistors.
If stock bulbs, then what bulb is not flashing. Hence hyper flash happens when a bulb is burnt out/not working and not the needed resistance on the line, so you know that you have a bulb not flashing in the first place.
Also to point out, if you pulled led bulbs and installed standard bulbs, then you will need to pull the resistors isntead.
If stock bulbs, then what bulb is not flashing. Hence hyper flash happens when a bulb is burnt out/not working and not the needed resistance on the line, so you know that you have a bulb not flashing in the first place.
Also to point out, if you pulled led bulbs and installed standard bulbs, then you will need to pull the resistors isntead.
Thread Starter
Melting Slicks
Joined: Oct 2015
Posts: 3,299
Likes: 769
From: Mead Wash
2020 C6 of the Year Finalist - Modified
C6 of Year Finalist (appearance mods) 2019
Hyper Flash
What builbs did you install, since if they are LEDs, then will need to install resistors.
If stock bulbs, then what bulb is not flashing. Hence hyper flash happens when a bulb is burnt out/not working and not the needed resistance on the line, so you know that you have a bulb not flashing in the first place.
Also to point out, if you pulled led bulbs and installed standard bulbs, then you will need to pull the resistors isntead.
If stock bulbs, then what bulb is not flashing. Hence hyper flash happens when a bulb is burnt out/not working and not the needed resistance on the line, so you know that you have a bulb not flashing in the first place.
Also to point out, if you pulled led bulbs and installed standard bulbs, then you will need to pull the resistors isntead.
Last edited by 2008 Corvette; Aug 2, 2018 at 09:08 PM.
Thread Starter
Melting Slicks
Joined: Oct 2015
Posts: 3,299
Likes: 769
From: Mead Wash
2020 C6 of the Year Finalist - Modified
C6 of Year Finalist (appearance mods) 2019
Hyper Flash
Bulbs were never changed. It just started Hyper Flashing. All Brake Lights work as they should. New bulbs were tried and the same thing.
Last edited by 2008 Corvette; Aug 4, 2018 at 07:06 PM.
Race Director
Joined: Oct 2010
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From: Las Vegas NV
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Thread Starter
Melting Slicks
Joined: Oct 2015
Posts: 3,299
Likes: 769
From: Mead Wash
2020 C6 of the Year Finalist - Modified
C6 of Year Finalist (appearance mods) 2019
Thread Starter
Melting Slicks
Joined: Oct 2015
Posts: 3,299
Likes: 769
From: Mead Wash
2020 C6 of the Year Finalist - Modified
C6 of Year Finalist (appearance mods) 2019
Pro
Joined: Mar 2018
Posts: 660
Likes: 63
From: Fresno CA
Try swapping the bulbs to the opposite sides of the car and test again. Start eliminating potential problems. If the problem persists on the original side, it'll narrow down where to continue searching and what you can rule out.
Instructor
Joined: Apr 2018
Posts: 141
Likes: 54
From: KS
C6 of Year Finalist (appearance mods) 2019
2018 C6 of Year Finalist
I've similar issues in my professional vehicles. Check out the side marker bulbs. They're part of the circuit too! If they're good, I would check each plug to ensure the wires aren't being pushed through the plug, nor are they coated in dirt or corrosion. Beyond that, it could be a relay getting weak, but those are usually pretty solid. And they're always put somewhere that anyone with large hands will struggle to get to. Let us know what you find, I'm pulling for the side marker bulb!
Thread Starter
Melting Slicks
Joined: Oct 2015
Posts: 3,299
Likes: 769
From: Mead Wash
2020 C6 of the Year Finalist - Modified
C6 of Year Finalist (appearance mods) 2019
Hyper Flash
I've similar issues in my professional vehicles. Check out the side marker bulbs. They're part of the circuit too! If they're good, I would check each plug to ensure the wires aren't being pushed through the plug, nor are they coated in dirt or corrosion. Beyond that, it could be a relay getting weak, but those are usually pretty solid. And they're always put somewhere that anyone with large hands will struggle to get to. Let us know what you find, I'm pulling for the side marker bulb!
Pro
Joined: Mar 2018
Posts: 660
Likes: 63
From: Fresno CA
Where did you purchase the OEM replacement bulbs from? One or more of them could be the incorrect bulb type, (e.g. 3157 vs 4157) which can produce different resistance. It could be that you were given the incorrect bulb number. So while the bulb may fit correctly, and look identical, it could trick the system into thinking the bulb is faulty, thus causing hyper flash.
I got some good info reading over this: link (yes I know it's a Ford, but helpful nonetheless). I'd suggest pulling each bulb and checking the number stamp on each one and cross reference with a bulb type chart for the Corvette.
I got some good info reading over this: link (yes I know it's a Ford, but helpful nonetheless). I'd suggest pulling each bulb and checking the number stamp on each one and cross reference with a bulb type chart for the Corvette.
Last edited by theandrewo; Aug 9, 2018 at 12:07 PM.
Thread Starter
Melting Slicks
Joined: Oct 2015
Posts: 3,299
Likes: 769
From: Mead Wash
2020 C6 of the Year Finalist - Modified
C6 of Year Finalist (appearance mods) 2019
Hyper Flash
Where did you purchase the OEM replacement bulbs from? One or more of them could be the incorrect bulb type, (e.g. 3157 vs 4157) which can produce different resistance. It could be that you were given the incorrect bulb number. So while the bulb may fit correctly, and look identical, it could trick the system into thinking the bulb is faulty, thus causing hyper flash.
I got some good info reading over this: link (yes I know it's a Ford, but helpful nonetheless). I'd suggest pulling each bulb and checking the number stamp on each one and cross reference with a bulb type chart for the Corvette.
I got some good info reading over this: link (yes I know it's a Ford, but helpful nonetheless). I'd suggest pulling each bulb and checking the number stamp on each one and cross reference with a bulb type chart for the Corvette.
Thread Starter
Melting Slicks
Joined: Oct 2015
Posts: 3,299
Likes: 769
From: Mead Wash
2020 C6 of the Year Finalist - Modified
C6 of Year Finalist (appearance mods) 2019
Hyper Flash
All great suggestions and Thank You. However I still have the problem. Any other ideas ? TIA. Mike.
