Hyperflash and headlight pop up when using rurn signal
Thread Starter
Drifting
Joined: Aug 2000
Posts: 1,601
Likes: 52
From: Jefferson City MO
Hyperflash and headlight pop up when using rurn signal
Please help confirm my thinking about how to fix a strange problem my 04 c5z began having with hyperflash turn signals and headlight popping up.
All turn signal bulbs are good and do not have LEDs. Sometimes, when using the turn signal, I get hyperflash. The rear blinks fast then the front will not blink. I can push the hazard switch and it cycles correct and temporarily gets the turn signals working again. This seems to be a common issue for many. However, sometimes when hyperflash happens, the headlights will pop up. Push the hazard switch and the hyperflash stops and the headlights go down. Push the hazard switch turn the hazards off and the headlights pop up again. After cycling the hazard switch a few more times to stop the signal hyperflashing, headlights drop as normal. Once hyperflash starts, headlights pop up again. Can almost raise and lower the headlights with the hazard switch. Also, once hyperflash begins, the headlight switch will not raise or lower the headlights until hyperflas stops.
So, what's the fix?
All turn signal bulbs are good and do not have LEDs. Sometimes, when using the turn signal, I get hyperflash. The rear blinks fast then the front will not blink. I can push the hazard switch and it cycles correct and temporarily gets the turn signals working again. This seems to be a common issue for many. However, sometimes when hyperflash happens, the headlights will pop up. Push the hazard switch and the hyperflash stops and the headlights go down. Push the hazard switch turn the hazards off and the headlights pop up again. After cycling the hazard switch a few more times to stop the signal hyperflashing, headlights drop as normal. Once hyperflash starts, headlights pop up again. Can almost raise and lower the headlights with the hazard switch. Also, once hyperflash begins, the headlight switch will not raise or lower the headlights until hyperflas stops.
So, what's the fix?
Last edited by Andrew; Nov 19, 2022 at 09:55 AM.
Thread Starter
Drifting
Joined: Aug 2000
Posts: 1,601
Likes: 52
From: Jefferson City MO
Thread Starter
Drifting
Joined: Aug 2000
Posts: 1,601
Likes: 52
From: Jefferson City MO
If anyone experiences hyperflash and random headlight popping up, the LED resister harness fixes the issue without removing and replacing the hazard switch. Works like stock, woohoo!!
