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Cadillac Tech Tips - How to fix it Discussion, Northstar Water Pump Replacment Steps in Item Specific Cadillac Discussion; Thank you for the great write up on changing the water pump. I just finished in my 2004 Seville, took ...
  1. #31
    seville04 is offline Cadillac Owners Member
    Automobile(s): 2004 Seville
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    Re: Northstar Water Pump Replacment Steps

    Thank you for the great write up on changing the water pump. I just finished in my 2004 Seville, took 3 hours, but that included lunch, two trips to the auto parts store and a half hour of trying to unseat the pump while turning it counter clockwise, Doh! Thanks again for the instructions, Advance and Autozone did not loan the tool so I bought one from Advance for $30, the water pump was $45 and the seal was $4.

  2. #32
    RippyPartsDept's Avatar
    RippyPartsDept is offline Hi, I'm Chris - Please Read My Signature
    Automobile(s): 1999 DeVille "Bianca" (white/blue, VIN-Y, 160k)
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    Re: Northstar Water Pump Replacment Steps

    I wonder if a note should be made about changing the pump housing/cover to update to the new style with that awesome picture that shows the two styles

    and also it should be noted that the thermostat housing gasket also has to be changed to the thicker style (from #3522676 to #12574478) when upgrading to the new pump housing/cover

    or maybe just find a way to merge this thread and this one: http://www.cadillacforums.com/forums...p-removal.html
    Chris Heath (RippyPartsDept) is an ASE Certified GM Parts Consultant at Rippy Automotive
    Rippy is a Cadillac, Hummer, Saturn & Saab dealership - family owned and operated in Wilmington, NC since 1946
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  3. #33
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
    Automobile(s): 2002.5 F55 STS/65500mi, 2004 Ford F150 SuperCab4x4
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    Re: Northstar Water Pump Replacment Steps

    New w/p housing cover and gasket - designed to stop delayed leaks.

  4. #34
    The Frugie's Avatar
    The Frugie is offline Cadillac Owners Member
    Automobile(s): '95 Eldorado
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    Re: Northstar Water Pump Replacment Steps

    I wanna thank ipncjh1 and everyone who has contributed to this thread. It's been a great help in replacing my water pump. I've run into a hangup though. I can't get the new w/p on. It took me the longest to figure out the correct orientation (it's 1 o'clock, not 7 o'clock like the ACDelco instructions said). But even after I figured that out I still couldn't screw on the new pump and ended up bending the tangs.

    So I bought another w/p and tried screwing it on without the o-ring. Finally it fit. But I can't leave it like that. So what should I do, get a thinner o-ring, use a razor or something to scrape off part of the o-ring I have? Has anyone else run into this problem?

  5. #35
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
    Automobile(s): 2002.5 F55 STS/65500mi, 2004 Ford F150 SuperCab4x4
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    Re: Northstar Water Pump Replacment Steps

    Did you lube the O-ring with raw coolant ???? - and it MUST be installed as-is - no scraping or resizing is possible or desired......... and did all the original ring come out of the water pump housing ?

  6. #36
    The Frugie's Avatar
    The Frugie is offline Cadillac Owners Member
    Automobile(s): '95 Eldorado
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    Re: Northstar Water Pump Replacment Steps

    I finally got it in. It turned out some of the old o-ring was still on there. My aunt and her husband were visiting and he took a look at it. The first thing he asked for was a flat head screwdriver. I don't know why I didn't think of that. I scraped off as much as I could using a razor, steel wool, and even my finger nail. But the screwdriver ended up being perfect for the job.

  7. #37
    GeorgeT is offline Cadillac Owners Member
    Automobile(s): 1998 DeVille
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    I'm having a BEAR of a time getting the 4th, bottom right hand bolt out of the WP cover. There's black covered wire or something impeding the socket going on straight. Any suggestions? 98 DeVille. Thank you!

  8. #38
    Mojo88's Avatar
    Mojo88 is offline Cadillac Owners Fanatic
    Automobile(s): 2003 White Diamond DeVille 'Base'
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    Re: Northstar Water Pump Replacment Steps

    Just did mine. Surprisingly easy. The special tool worked like a charm. The hardest part was cleaning the o-ring area, and also cleaning the housing gasket area, then replacing both seals.

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