Headlight module??
Thread Starter
Instructor
Joined: Apr 2011
Posts: 127
Likes: 0
Headlight module??
Done some searching, still not 100% sure. Turn headlights on, headlights flip, motors keep running for about 5 seconds. Does it when flipping headlights up or down. Where is the headlight module? What tests can I do to see if its that or a sticking relay? Which / where is the relay?
Le Mans Master
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
Thread Starter
Instructor
Joined: Apr 2011
Posts: 127
Likes: 0
Ok, it's killing me. I gotta know. Why would the bushings make the headlight motors come on when you turn the paring lights off, and why would both headlight motors start messing up at exactly the same time?
Race Director
Joined: May 2001
Posts: 14,165
Likes: 9
I don't know the exact logic behind the control unit but I can tell you this... if the motors are still running after the lights are closed, the bushings are shot, it's the only way it can happen. It runs until it meets enough resistance or a certain amount of time maybe?
I also know this, if you disconnect the battery and manually open the headlight about halfway, then plug the battery back up, they're gonna take off running. I BELIEVE that every time the switch is flipped to the OFF position, it attempts to close the lights. If the motors encounter resistance it immediately gives up. If the motors DON'T encounter resistance, they'll run for a set amount of time.
Pretty much everybody who has owned a C4 has been there with the headlights, trust us when we tell you it's the bushings. You MIGHT have another issue, but you'll never know until the bushing problem is resolved.
I also know this, if you disconnect the battery and manually open the headlight about halfway, then plug the battery back up, they're gonna take off running. I BELIEVE that every time the switch is flipped to the OFF position, it attempts to close the lights. If the motors encounter resistance it immediately gives up. If the motors DON'T encounter resistance, they'll run for a set amount of time.
Pretty much everybody who has owned a C4 has been there with the headlights, trust us when we tell you it's the bushings. You MIGHT have another issue, but you'll never know until the bushing problem is resolved.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
Thread Starter
Instructor
Joined: Apr 2011
Posts: 127
Likes: 0
Wow! Priceless info! Thank you so much! Sounds like it works like a power window. The odd part it that when they started screwing up, I had the hood open. I flipped the headlights to polish the headlight buckets. They opened like they were supposed to. When I closed them, the motors kept running. Odd, but I've not put new bushings in yet. I'll do that first. Ecklers has them for 5.99. Obviously, a no-brainer. Thanks again 
Le Mans Master
Joined: Aug 2010
Posts: 9,272
Likes: 17
Thread Starter
Instructor
Joined: Apr 2011
Posts: 127
Likes: 0
Just a follow up. I live about an hour from Volunteer Vette Products. They had the bushings for $3.50 a set. Picked up 2 sets. Just got done putting them in. Headlights work like they dis the day the car was made. Yall were right. Fine powder. THANKS for the heads up 
