97 Bonneville Headlight replacement - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 02-14-2008, 12:24 PM   #1
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Default 97 Bonneville Headlight replacement

I have ordered both replacement headlight assemblies , and would like to request just "how to" replace the assemblies. It looks complicated under the hood . We have always had the car repaired at the local G.M. dealer. But now we have found this site !
Looking forward to your response !
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Old 02-14-2008, 07:00 PM   #2
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I know this picture isn't much help but this might give you a better idea of what the headlight assembly entails.

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The cornerlight and headlight are attached to a black painted metal housing. Two bolts (10 mm heads and found one above the other, verticlaly, and located next to each headlight itself, toward the center of the car) bolt though the black bracket assembly to the the support bracket (body color) which is mounted to the radiator support. In addition to those two bolts, at the outer corners, behind the headlight assembly, there are two "guide pins" that can't be seen that are on the back of the corner lights that hold the outer corner of the whole assembly in place.

So, after undoing the two bolts, the whole headlight assembly (black bracket with headlight and corner light still attached) needs to slide horizontally, away from the center of the car, toward the outer corners to get the guide pins out of the holes. You may need to push down a little bit on the front bumper, under each headlight, to help the assembly clear the bumper while sliding it out.

Hard to describe, but once you have removed one and examine the guide oins and the holes they slide into, it makes it easier to understand.

Here is a picture of the back of a corner light where you can see one of the "guide pins"
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Old 02-14-2008, 07:21 PM   #3
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Thanks for your response ! That will be very helpful !
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Old 02-23-2008, 12:26 PM   #4
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Is it necessary to pull the grill out to change the head light assy ? I purchased two new assy , they came with the black metal bracket attached on the back of the assy. I see two hole that I assume are bolt holes and two pins at the opposite side of the housing that look like they would possible hinge the assy and hold it with out bolting .
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Old 02-23-2008, 03:16 PM   #5
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No grille removal needed. The grill is attached to the hood (which you will need to open).

Again, it is hard to explain, but once you begin removing the old assembly, it will make sense. Two 10mm bolts through two holes in the black bracket (you can see them easily)...then slid the whole assembly (it may need a little persuasion) toward the outer corner of the car.
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Old 02-23-2008, 03:47 PM   #6
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Life'* most embarrassing comments! What a dummy...I had those headlight assy changed in 20 minutes !! Is my red face glowing that much !!! DAH !!! LOL..LOL...
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Old 02-23-2008, 03:57 PM   #7
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It'* amazing really....it takes longer to change the bulbs out of that Nova than it does our Bonnies

Glad you found the site, and anyone here would be happy enough to help!
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Old 02-23-2008, 06:08 PM   #8
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Glad you got it done. I am sure there are many that are confused about the entire headlight assembly. Unless you know that you have to slide the WHOLE thing over, I can imagine it would be very frustrating for anyone, and I agree that it looks a LOT more complicated than it really is.
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Old 02-23-2008, 09:13 PM   #9
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Thanks for the help.. my wife things I'm an ace mechanic now ! L.O.L.
Next is the serpentine belt it is chirping at idle and with a few rpm'* it seems to quit chirping ...I read a little about it on another forum ...it could be the tension idler pulley...I think I'll attempt the belt change first and see if thats the fix ...wish me luck !
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