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Discussion Starter #1 (Edited by Moderator)
I've been reading the forum for a short while, and wanted to ask a question or two. I purchased a 77 Couple DeVille to drive in the winter (as the Corvette sits in the garage), but I'm enjoying it so much I'd like to fix it up and I'm thinking about keeping it. Overall the car is in good shape with the exception of some surface body rust on the trunk, & like alot of these that I've seen, it's plactic is crumbling. Most noticeably on the bumperfillers in the back. I found a junkyard that sent me two maroon replacements, which I painted gold to match the car. My question is, I'm assuming I'll need to remove the bumper to replace these? There is a lip where these install so I tried to fit one on without removing the bumper, but no luck so far there.
Has anybody done this, that could share some wisdom?

Thanks in advance.

 

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1979 Sedan deVille d'Elegance
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There was a post recently discussing this if you scroll down. I have not done this myself although from what I've read on this forum the procedure is not that difficult.
 

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Discussion Starter #3 (Edited by Moderator)
Thanks. I'm looking for it now.

I found a few of the old threads and it looks like I'm in good shape, as hopefully I'll just have to remove the tail light section, and not the entire 29 year old bumper.

Looks like I've got a little garage time project on my hands.
 

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'80 Fleetwood Coupe, 1994 and 1995 Mercedes 140 Coupe
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The bumper is very easy to remove. If you spray the 8 mounting studs ahead of time it practically falls off. The tail lights still need to come out before pulling the bumper in order to pop the lamp sockets out. The bumper is not all that heavy. Just keep track of the E shaped shims and it will go back together without trouble.
 

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2000 DeVille, 2003 DeVille, countless others previously.
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Actually, for several of the Cadillac rear quarters, it isn't absolutely necessary to remove the bumper completely.
 

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1977 Coupe (blue), 1977 Coupe (yellow), 1977 Coupe (green)
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On these cars ('77- '79) it is easier to crawl under the car and remove the four bolts that hold the energy absorbers in the frame. You have to remove the top two bolts at the front of the energy absorber on the right side to remove the tailpipe hanger. Then the whole assembly pulls back and you can let the assembly hang in the frame tubes while you disconnect the taillight connectors and the fiber optics. Go into the trunk and remove the fasteners that hold the quarter extensions to the quarters. The rest of the fillers are also available without removing the assembly. Do it this way and you don't have to worry too much about the alignment of the assembly to the back of the extensions, unless they are real bad.:cool2:
 

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2014 ELR
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I've only replaced fillers on an 80-92 car, and removed them from a 93-96. You don't need to remove the bumper. I would strongly suspect the 77-79 would be the same.
 

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'80 Fleetwood Coupe, 1994 and 1995 Mercedes 140 Coupe
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This is an old thread : )

I've done them both ways.

Neither is much easier.

Having the bumper completely out of the way helps lining up stuff when you want to view it for alignment from a distance.

Leaving the shims helps alignment go faster.

6 of one, half dozen. Lather, rinse, repeat.
 

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1978 Coupe De Ville, 1993 Fleetwood
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I think taking the whole bumper assembly off, as Ape Man says, makes it easier to get the quarter extensions lined up properly, which is a pita, especially if dealing with the aftermarket parts. The only real issue is to be sure not to scratch the extensions when putting the bumper back on. I find that a floor jack, and an extra set of hands helps to balance the heavy assembly and get it into place.
 

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Yes, it seems that every old bumper filler thread has been bumped by someone trying to sell repro fillers.
Well you can't blame a guy for trying to make a buck : )

For you spammers selling bumper fillers here's a flash:
Make bumper fillers that fit and you will sell lots of them.
 

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1979 Sedan deVille d'Elegance
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How hard can it be to reproduce urethane fillers? GM made them so it can't be that impossible. A business opportunity awaits someone who can figure it out and make it happen! :)
 

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1977 Coupe (blue), 1977 Coupe (yellow), 1977 Coupe (green)
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How hard can it be to reproduce urethane fillers? GM made them so it can't be that impossible. A business opportunity awaits someone who can figure it out and make it happen! :)
That would be great, but the conventional method of manufacture of Urethane products requires the use of production dies, which are expensive to machine. You would also need a plastics injection machine. You could possibly get the machine cheaper than the dies. I have not found out anything, as of yet, if a additive printer could make parts of Urethane. :(
 

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I find it hard to believe that GM has not tapped into this market themselves. There are so many older GM cars with those fillers, and all of them are pretty far off from the original parts. Since they have the molds, and the technology has changed over the years, (I'm thinking they could use better plastic/rubber) I would think they could sell new GM fillers as fast as they could make them.
 

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chevy 350 powered 86 FWB, 00 safari h.t. 66 toro, 83 lesabre
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I find it hard to believe that GM has not tapped into this market themselves. There are so many older GM cars with those fillers, and all of them are pretty far off from the original parts. Since they have the molds, and the technology has changed over the years, (I'm thinking they could use better plastic/rubber) I would think they could sell new GM fillers as fast as they could make them.
I'd buy a set for my lesabre. even though no one else seems to notice they're missing
(and think of all the fillerless box caprices running around)
 

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I had both my rear fillers replaced on my '78 Deville a few years back by a local body shop.They just tilted the rear bumper down far enough to access the fillers,and removed the tail lights assembly.They did a good job painting and aligning the new fiberglass fillers i bought from e-bay.
I`ve heard most aftermarket fillers are a crap shoot and finding good ones are rare.I must have got lucky because mine fit exactly right.Downside, since they`re fiberglass they`ll crack if some one rear ends me.
The original polyurethane fillers were flexible to absorb and flex upon impact.
 
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