how to remove/replace heater core? 95" fleetwood
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RWD 19xx-1984 DeVille and Fleetwood,
1985-1996 Fleetwood and Brougham Forum Discussion, how to remove/replace heater core? 95" fleetwood in Past Cadillac Vehicle Discussion; I need to replace the heater core in my 95" fleetwood. It started to leak , and i wanted to ...
  1. #1
    faxafoli is offline Cadillac Owners Member
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    how to remove/replace heater core? 95" fleetwood

    I need to replace the heater core in my 95" fleetwood. It started to leak , and i wanted to ask u guys if u could give me directions how to replace it. The windows inside the car get very foggy when i turn the heat on.

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    jayoldschool's Avatar
    jayoldschool is online now GM RWD V8 addict
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    Re: how to remove/replace heater core? 95" fleetwood

    Disconnect hoses at firewall. Remove passenger seat (trust me). Remove lower dash trim. Remove panel that covers heater core. 7.5mm nuts, I believe. The one at the firewall is really hard to get to. I use a flex adapter. Release spring clip on core. Pull out core. Replace new core, reverse all directions. Fill coolant. Jack up nose of car, bleed coolant with engine hot.

  4. #3
    drmenard is offline Cadillac Owners Enthusiast
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    Re: how to remove/replace heater core? 95" fleetwood

    Changing the heater core in these cars were on of the eaziest I have done.. 90% of the work is done under the passanger side dash..take the cover from the under the dash.. under there you will see the heater box..there is a cover that covers the heater core.. the cover is angled on the right side and the left side is rectangle shape.. this is one plastic cover.. there 7 screws holding it on.. but the two at the top can't be seen.. I just went it with a driver and felt around and got them out... can't remember what was holding in the core, not much, few screws... under the hood you have to take off the two clamps on the heater hoses... and there is a drain hose that you have to take off ... I did not take off that drain hose first.. did not know it was there.the hose fell on the ground.. then when it was all toether instead of dripping a/c water outside on the ground it leaked inside on the carpet...Another thing I did not like... I went to autozone for the core.. to ship it in a smaller box they made the inlet and outlet tubes movable.. they have rubber seals that can be dammaged and leak when moving into place...if you get one like this a little lube before moving is not a bad idea..wd40, something wet and slippery...

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    outsider is offline Cadillac Owners Connoisseur
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    Re: how to remove/replace heater core? 95" fleetwood

    this is a good thread! I've been wondering about that since I flushed my core and still not getting the heat i expected...

    Jay, why remove passenger seat? just for ease of movement?

  6. #5
    faxafoli is offline Cadillac Owners Member
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    Re: how to remove/replace heater core? 95" fleetwood

    Thanks alot guys, u are the best

  7. #6
    jayoldschool's Avatar
    jayoldschool is online now GM RWD V8 addict
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    Re: how to remove/replace heater core? 95" fleetwood

    Yep, removing the seat makes it MUCH easier to work. Throw a towel over the exposed seat mounting bolts. They hurt like hell when they jab in the ribs.

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    Re: how to remove/replace heater core? 95" fleetwood

    Thanks for the directions, Jay and Menard.

    I just got finished replacing my heater core and I have pictures for anyone who may still be skeptical about the simplicity of the job;





    Disconnect hoses at firewall.


    Remove lower dash trim.




    Remove panel that covers heater core.



    The one [screw] at the firewall is really hard to get to.


    Release spring clip on core.


    Replace new core





    Enjoy heat, steam free windows, and dry carpet!

  9. #8
    Stingroo's Avatar
    Stingroo is online now Wagon/Audio Enthusiast
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    Re: how to remove/replace heater core? 95" fleetwood

    You sir, have convinced me. I'm going to tackle this on the wagon.

  10. #9
    CadillacPimpinNOLA is offline Cadillac Owners Connoisseur
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    Re: how to remove/replace heater core? 95" fleetwood

    that looks to easy, i think even I might do mine at work this week if the dealership has one in stock...i flushed mine a few times around october when i expected it to get cold. the water flows out free and clear every time but im barely getting heat with the panel on 85-90 degrees and it doesnt last long, few minutes it goes back cold.

  11. #10
    beatz02's Avatar
    beatz02 is offline Cadillac Owners Fanatic
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    Re: how to remove/replace heater core? 95" fleetwood

    @ Stingroo, Do it! lol

    @ Nola, I purchased mine (AC Delco #1560063) from Rock Auto for $178 plus shipping. I think the dealer charges more.

  12. #11
    csbuckn is online now Cadillac Owners Master
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    Re: how to remove/replace heater core? 95" fleetwood

    Wow, $178!! I see that the AC Delco one on rockauto is much more than the rest. Wonder why?

  13. #12
    beatz02's Avatar
    beatz02 is offline Cadillac Owners Fanatic
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    Re: how to remove/replace heater core? 95" fleetwood

    Well, $173.79. Couldn't remember the exact price during that first response.

    But yeah, the AC Delco is much higher than the other aftermarket parts. I'd assume it's either because the supply is low, or they know people will pay big bucks for OEM parts, so why not jack-up the price. I still think it's cheaper than dealer.

    It cost $153 on eBay, with free shipping. I couldn't find it on eBay at first because I kept searching "1560063" without the dash. Come to find out, you have to type "15-60063" in order for them to come up.

    By the time I figured that out, I had already ordered from Rock Auto. Amazon's search engine brought it up without the dash, but it's $200 on Amazon.

    Kinda salty I didn't get the $153 deal, but oh well, lesson learned.

    Hopefully no one comes on next and says something like, "Hey everybody! They have the AC Delco's on such and such for $30." lol.. Then I'll have to shoot myself.

  14. #13
    CadillacPimpinNOLA is offline Cadillac Owners Connoisseur
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    Re: how to remove/replace heater core? 95" fleetwood

    i work at a dealership bodyshop so i get a discount through any dealership and auto parts stores like pepboys, oriellys and napa...plus i get it tax free and dont have to pay right away so If available i may get it cheaper than $178

    before i do that though i want to be 100% certain its that and not the blend door malfunctioning or something stupid

  15. #14
    HUF's Avatar
    HUF
    HUF is offline Cadillac Owners Connoisseur
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    Re: how to remove/replace heater core? 95" fleetwood

    Beatz02,

    Thank you for the pictures. Looks like the seals for the pipes are the problem area since the rest seems to be allmetal. They will always find a way to screw things up!

  16. #15
    silverfox103's Avatar
    silverfox103 is offline Cadillac Owners Fanatic
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    Re: how to remove/replace heater core? 95" fleetwood

    I had a 95 RMW, the original heater core lasted 220K. I replaced it with a genuine, made in Mexico, NAPA heater core. It lasted 12K. Lesson learned, I will pay for quality.

    I also pull out the seat and cover the bolts with cardboard. Makes the job alot more barable.

    Tom C.

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