93 Fleetwood rear air shocks
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RWD 19xx-1984 DeVille and Fleetwood,
1985-1996 Fleetwood and Brougham Forum Discussion, 93 Fleetwood rear air shocks in Past Cadillac Vehicle Discussion; My 93 Fleetwood still has the factory rear air shocks, with the compressor. The car just turned 80,000 miles, and ...
  1. #1
    Mark 78 Coupe is offline Cadillac Owners Fanatic
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    Smile 93 Fleetwood rear air shocks

    My 93 Fleetwood still has the factory rear air shocks, with the compressor. The car just turned 80,000 miles, and I am wondering if ( and when ) they start to leak, if anyone has experience with a replacement non air shock that works, and still provides a nice ride. A specific brand, and price, if you have it would be appreciated. Thanks!!

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  3. #2
    turbojimmy's Avatar
    turbojimmy is offline Cadillac Owners Connoisseur
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    Re: 93 Fleetwood rear air shocks

    The factory ones are still available and relatively inexpensive. If they're not leaking oil, I'd leave them alone.
    mygpascaddy and mygpascaddy like this.

  4. #3
    Mark 78 Coupe is offline Cadillac Owners Fanatic
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    Re: 93 Fleetwood rear air shocks

    Anyone else besides turbo jimmy have any thoughts? I have heard that eventually the compressor will die, and was wondering if anyone has replaced the factory shocks with a non-air shock, and what the results were. Anybody?? Thanks!!

  5. #4
    csbuckn is offline Cadillac Owners Master
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    I heard that the springs are softer and made to be setup with air shocks, and that putting non air shocks with the springs would make it sag and run too soft. But that's what I heard and I don't know for sure. My suggestion would be to buy air shocks and mount the fill valve behind the bumper, that way you can fill and release air based on your preferences.

  6. #5
    outsider is offline Cadillac Owners Connoisseur
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    Re: 93 Fleetwood rear air shocks

    ^ Right, what he said. That seems to be the most common practice and I'm 99% sure my 95 has it set up that way.

  7. #6
    SDCaddyLacky's Avatar
    SDCaddyLacky is offline Cadillac Owners Enthusiast
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    Re: 93 Fleetwood rear air shocks

    Thats what I did, I replaced my leaky rear air shocks with the manual setup. Because my level sensor was bad, including the rotted out arm that has the little ball on it, I bypassed the air compressor. Now all I have to do is go to a gas station and fill up the shocks to my preference. I don't have to worry about any electrical issues or a failed compressor anymore, and it's great.

    Personally since I have the Monroe Max Air shocks, I wish I would of gone the stock route since these rear shocks are very stiff.

  8. #7
    turbojimmy's Avatar
    turbojimmy is offline Cadillac Owners Connoisseur
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    Re: 93 Fleetwood rear air shocks

    Quote Originally Posted by outsider View Post
    ^ Right, what he said. That seems to be the most common practice and I'm 99% sure my 95 has it set up that way.
    ^What he said, and what he said. Without air shocks, the car will be dragging ass everywhere. Not becoming of a stately car like the Fleetwood. If your compressor works, and all you need is shocks, why not just do stock shocks? If the compressor or sensor go bad in the future, deal with it then. They may last forever.

  9. #8
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    jayoldschool is offline GM RWD V8 addict
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    Re: 93 Fleetwood rear air shocks

    Good advice from all.

  10. #9
    digital1021 is offline Cadillac Owners Fanatic
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    In my experience the shocks will fail long before the compressor... Of course YMMV. The first time I replaced the rear air shocks I went with the Monroe air shocks, from NAPA. These are almost exactly like the factory units, with the air bag exposed. After they failed two years later, I replaced them with Gabriel air shocks from Advanced Auto. These have an internal air bag, and actually seem to ride better than the Monroe shocks.

    They do make passive replacement shocks that come with a helper spring attached.

    As for cost, the passive replacements run about $80-90 per shock, while both the Monroe and Gabriel air shocks are about $60 per pair, and include replacement lines and fittings. Additionally, while you can setup the air shocks separate of the level control, they are compatible with the factory system. So there is a cost advantage to keeping the air shocks/level control.

    ~ Matt

  11. #10
    Mark 78 Coupe is offline Cadillac Owners Fanatic
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    Re: 93 Fleetwood rear air shocks

    Wow, thanks to everyone for the helpful suggestions!! Here's hoping the compressor continues to work, and not leak. Since it is a Florida car, it has zero rust on the underside, so I am hopeful that everything will continue to work well in the future. Thanks again.

  12. #11
    turbojimmy's Avatar
    turbojimmy is offline Cadillac Owners Connoisseur
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    Re: 93 Fleetwood rear air shocks

    Quote Originally Posted by Mark 78 Coupe View Post
    Wow, thanks to everyone for the helpful suggestions!! Here's hoping the compressor continues to work, and not leak. Since it is a Florida car, it has zero rust on the underside, so I am hopeful that everything will continue to work well in the future. Thanks again.
    The Delco replacement shocks appear to be "regular" air shocks (unlike the factory arrangement with an in and out on the left shock and just an "in" on the right shock). They come with a line kit. If the compressor fails, you can just re-route the lines and add a Schrader valve to pump them up.

  13. #12
    brougham is offline Cadillac Owners Master
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    Re: 93 Fleetwood rear air shocks

    The springs might be weaker then normal but should still be able to hold the car up unless there's a heavy load in it. If it doesn't they're worn out. The compressors almost never break it's usually a line or the shocks themselves.

  14. #13
    Cadillacboy's Avatar
    Cadillacboy is offline Cadillac Owners Connoisseur
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    Re: 93 Fleetwood rear air shocks

    We have bad shocks , they leak but compressor runs fine . Your shocks held up pretty well because my dad's ride were broken at only 53K kilometers

  15. #14
    turbojimmy's Avatar
    turbojimmy is offline Cadillac Owners Connoisseur
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    Re: 93 Fleetwood rear air shocks

    Just a word to the wise.....

    When you order the GM 504511 shocks, they come in a pair and are listed as replacements for the stock shocks. These are oil-filled shocks with air bags in them, like stock, but only have one fitting on each shock. The factory arrangement has 2 fittings on the left and one on the right. The second fitting on the left shock feeds the right shock. All this needs re-plumbed. The 504511 does come with a line kit, but it's a kit that sets you up with a standard air-shock setup with a schrader valve. This is nice, but if you want to retain the factory compressor you will also need the GM 141248 kit. Or, if you're resourceful, you just need to come up with a "T" fitting to plumb the air line from the pump to both new shocks. I'm anal about this stuff, so I ordered the kit. In the meantime, I've got 120 PSI in the shocks and the car sits up really nice. Rear shocks made a HUGE difference. I'm doing the fronts later this week. Waiting on tools....

    The job just plain sucks. Getting up at the nuts at the top of the shocks is ridiculous. How much effort would it have been to weld the nuts to the frame during assembly? Did GM not envision anyone ever replacing the shock absorbers? I'm not looking forward to crawling back under there to install the line kit once it arrives.

  16. #15
    pompste is offline Cadillac Owners Connoisseur
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    Re: 93 Fleetwood rear air shocks

    Quote Originally Posted by Mark 78 Coupe View Post
    Anyone else besides turbo jimmy have any thoughts? I have heard that eventually the compressor will die, and was wondering if anyone has replaced the factory shocks with a non-air shock, and what the results were. Anybody?? Thanks!!
    I had "passive" non-air rear shocks installed on both my Sedan Deville`s within the past 3 years and they work great---even with the existing springs.Ride height is exactly the same as with the original air shocks also.Had to replace the original air shocks as they developed oil leaks,and i did`nt have the deep pockets to get air shocks.It also sounds great to "not" hear those air pumps working too.Both air pumps still worked great.
    The ride is just a bit firmer in the rear,not much, on my '95 with the passive shocks.On my '78 i notice no difference in ride at all with the passives.The '78 has a longer wheelbase than the '95 so that might account for it.

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