LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Head light grinds when closed

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Old 05-13-2009, 01:08 AM
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Question Head light grinds when closed

On my 1996 Trans Am whenever I turn off the head lights the drivers side light makes a loud grinding sound what should I do?
Old 05-13-2009, 02:31 AM
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the plastic gear is striped out inside the motor. The cheapest of the way to fix this is to disconnect the lever from the motor and turn it 180 degrees so it will use the unused side of the plastic gear. The other way to fix this, more expensive, is to either replace the gear or replace the motor. I have done both replaced a gear and also done the 180 degree mod. Both work well.
Old 05-13-2009, 03:44 AM
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i just got a new motor
Old 05-13-2009, 03:46 AM
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Originally Posted by hitmanws6
i just got a new motor
A new motor is the best way to go but if money is an issue that isnt by any means the cheapest way to go.
Old 05-13-2009, 06:04 AM
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Originally Posted by litch2004
The cheapest of the way to fix this is to disconnect the lever from the motor and turn it 180 degrees so it will use the unused side of the plastic gear.
i did this, works mint
Old 05-13-2009, 06:39 AM
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i just pulled out the gear and flipped it a 180 degrees. then put it back in. if you dont feel like forcking out the money for a motor, that is the best way. i did mine about a year and a half ago and had no problems as of yet.
Old 05-13-2009, 07:32 PM
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Alright I'll go take a look at it and see what I can do to it, hopefully the previous owner hasn't already done the 180 degree gear flip method as described here.

Last edited by anolis; 05-14-2009 at 05:04 PM.
Old 05-13-2009, 07:41 PM
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A new motor actually isn't the best way to go. They are extremely expensive, and you run the risk of stripping them again. The 180 flip is nice if you haven't done it before, and it doesn't cost a thing.

The BEST thing to do is to replace them with a metal gear.
Old 05-13-2009, 08:36 PM
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Originally Posted by RamAir95TA
A new motor actually isn't the best way to go. They are extremely expensive, and you run the risk of stripping them again. The 180 flip is nice if you haven't done it before, and it doesn't cost a thing.

The BEST thing to do is to replace them with a metal gear.
This is what i actually did. I had some made on the c&c machine out of marine grade brass
Old 05-13-2009, 10:25 PM
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http://www.youtube.com/watch?v=HuolI...layer_embedded
http://www.freewebs.com/headlight/headlightmotorfix.htm
http://www.bfranker.badz28.com/headlightfix/

If those don't help you, I don't know what will.
Old 05-14-2009, 12:28 AM
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Well I took the motor out and it looks like the previous owner has already done the headlight fix.. Looks like I'm gonna be buying a new headlight motor. :/

How long do they usually last for?

Last edited by anolis; 05-14-2009 at 05:04 PM.
Old 05-14-2009, 06:20 AM
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I second the metal gear upgrade rather than just throwing a new motor in. New motors cost a couple hundred bucks sometimes depending on where you get them and quality. The gear upgrade is not only cheaper, but it will last longer.
Old 05-14-2009, 08:45 AM
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How long do the actual motors themselves last compared to the gears?

Last edited by anolis; 05-14-2009 at 05:03 PM. Reason: typos
Old 05-14-2009, 10:44 AM
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http://www.bfranker.badz28.com/headlightfix/
buy this brass gear over buying a new motor. The new motors still come with a metal work gear and a plastic gear. Eventually the plastic gear will wear out again. The ones from bfranker are brass just like the ones that i had made for mine. These will not wear out like the OE plastic gears that come in the motor.

And you say you took the motor out. Did you open it up and see the plastic gear or are you just guessing that they did the 180* mod?
Old 05-14-2009, 04:57 PM
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I had to go ahead and just get the new motor as I can't drive without lights at night, and couldn't wait for the brass one to get here by mail. Once I get some money together I may go ahead and get a brass gear for the motor after fixing other problems... (this being a newly purchased car and all I've got a lot of catching up to do maintenance wise and all i.e., window motors, A/C is going out, antenna, paint job etc.)

As for the old motor. Yes I did take it apart, I noticed tooling marks on it as if it had been opened up before. It opened rather easily. The gear was worn on all sides and it was chewed up badly.

The new motor has a lifetime warranty so I figure I'll just take it back to Autozone when it stops working again and get another one?

Last edited by anolis; 05-14-2009 at 05:02 PM. Reason: typographical corrections
Old 05-14-2009, 05:48 PM
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How much was it at autozone? I plan on doing the gear replacement but im just curious as to how much it was.
Old 05-14-2009, 06:08 PM
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Originally Posted by anolis
I had to go ahead and just get the new motor as I can't drive without lights at night, and couldn't wait for the brass one to get here by mail. Once I get some money together I may go ahead and get a brass gear for the motor after fixing other problems... (this being a newly purchased car and all I've got a lot of catching up to do maintenance wise and all i.e., window motors, A/C is going out, antenna, paint job etc.)

As for the old motor. Yes I did take it apart, I noticed tooling marks on it as if it had been opened up before. It opened rather easily. The gear was worn on all sides and it was chewed up badly.

The new motor has a lifetime warranty so I figure I'll just take it back to Autozone when it stops working again and get another one?
you could have manually put the headlight up until the brass gear came
Old 05-14-2009, 07:10 PM
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Originally Posted by shutzero
you could have manually put the headlight up until the brass gear came
Oh man...total noob mistake!
Old 05-14-2009, 10:09 PM
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yea, i imagine i could have :/ but at least it works now
Old 05-14-2009, 10:14 PM
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Originally Posted by RamAir95TA
A new motor actually isn't the best way to go. They are extremely expensive, and you run the risk of stripping them again. The 180 flip is nice if you haven't done it before, and it doesn't cost a thing.

The BEST thing to do is to replace them with a metal gear.
X2 on this, I replaced mine with an aluminum gear kit off ebay like $45 and it will never break again.


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