91 Firebird headlights won't pop up, help?
Junior Member
Joined: Sep 2012
Posts: 72
Likes: 0
From: Puerto Rico 00725
Car: 1992 W68 Firebird
Engine: 305 5.0L V8 TBI
Transmission: 700R4
Axle/Gears: 2.73
Re: 91 Firebird headlights won't pop up, help?
both worked fine when tested before we pulled them from donor car 2weeks ago.
From the 1st time once installed on my car, they continued to spin after opening or closing.. just like the old ones. So either that wasn't the problem or the (probably bad) module got them cracked. i'l check that later...
I'll check the switch and bushings in a couple of days... once i get the "new" module...
Junior Member

Joined: Feb 2013
Posts: 87
Likes: 0
From: Michigan
Car: 1990 Camaro Iroc-z Z28,1987 Camaro
Engine: 406 Super rammed SBC, LT1 355
Transmission: 4l60E, 700R4
Axle/Gears: disc brake 3.27 9 bolt posi,10 bolt
Re: 91 Firebird headlights won't pop up, help?
i dont know if your stilltrying to figure this out but it may be a bad vacumn.
Joined: Dec 1999
Posts: 5,964
Likes: 37
From: Hacienda Heights, CA
Car: 90 RS 'Vert, 88 IROC-Z, 88 Firebird
Engine: 305 ci tbi, 305 ci tpi, 350 ci tpi
Transmission: WC-T5, WC-T5, 700R4
Axle/Gears: 3.45, 3.27, 3.27
Re: 91 Firebird headlights won't pop up, help?

OK you've got me there. There have not been vacuum actuated headlight motors for a few generations of Firebird (or Corvette) now. I have to admit I'm clueless as to how a bad vacuum would cause problems with an electrically actuated headlight motor. But I'll gladly listen to your explanation of that solution.
Lon
Junior Member

Joined: Feb 2013
Posts: 87
Likes: 0
From: Michigan
Car: 1990 Camaro Iroc-z Z28,1987 Camaro
Engine: 406 Super rammed SBC, LT1 355
Transmission: 4l60E, 700R4
Axle/Gears: disc brake 3.27 9 bolt posi,10 bolt
Re: 91 Firebird headlights won't pop up, help?
A bad Vacuum? 
OK you've got me there. There have not been vacuum actuated headlight motors for a few generations of Firebird (or Corvette) now. I have to admit I'm clueless as to how a bad vacuum would cause problems with an electrically actuated headlight motor. But I'll gladly listen to your explanation of that solution.
Lon

OK you've got me there. There have not been vacuum actuated headlight motors for a few generations of Firebird (or Corvette) now. I have to admit I'm clueless as to how a bad vacuum would cause problems with an electrically actuated headlight motor. But I'll gladly listen to your explanation of that solution.
Lon
Sam
Junior Member
Joined: Sep 2012
Posts: 72
Likes: 0
From: Puerto Rico 00725
Car: 1992 W68 Firebird
Engine: 305 5.0L V8 TBI
Transmission: 700R4
Axle/Gears: 2.73
Re: 91 Firebird headlights won't pop up, help?
Replaced the module and everything works fine now.
No more popups when turning just the parking lights.
Checked all the bushings and driver's side didn't look that good... i replaced both sides just in case...
No more popups when turning just the parking lights.
Checked all the bushings and driver's side didn't look that good... i replaced both sides just in case...
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