Differential Install
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2004-2007 Cadillac CTS-V General Discussion Discussion, Differential Install in Cadillac CTS-V Series Forum - 2004 - 2007; So I am going to replace my diff soon and I am wondering if it is an easy swap? I ...
  1. #1
    jweymar's Avatar
    jweymar is offline Cadillac Owners Enthusiast
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    Differential Install

    So I am going to replace my diff soon and I am wondering if it is an easy swap? I dont want to do it myself but can any mechanic do it?

    I would like to just take it to a local shop rather than drive 2+ hours back to RPM who is great but just a PITA.

    What would you guys do?

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  3. #2
    lunarx's Avatar
    lunarx is offline Cadillac Owners Connoisseur
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    Re: Differential Install

    Whats up with your diff?
    You might want to try Ryan Cunningham of Cunningham Motors.
    He is in Lake Elsinore which could possibly be a better drive for you.

  4. #3
    rand49er's Avatar
    rand49er is offline Cadillac Owners 10000+ Posts
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    Re: Differential Install

    Shane (lollygagger8) did a great writeup with pictures of his diff replacement.

    Even if you don't want to do it yourself, I'd print that off and take it to your local shop as added information ... it can't hurt (unless their ego is bruised a bit).



    EDIT: Nice to hear from you Ernie!
    '05 CTS-V, Maggie, Kooks, Hotchkis, Ground Control, Corsa, B&M, DSS/Hendrix, Full 3M Clear Bra, Autovation, V Headrests, CTS Console, STS-V 55w Fogs, Black Vette FRCs, Specter Werkes, Katech LS9 Clutch, SS Brake Lines, Heavymetals U-Turn Fuel Line Eliminator, Momo Combat Evo Shift Knob, Wldwhl Clear Sidemarkers, Linea Corse LC855 Wheels or OEM wheels w/'06-'07 Center Caps, plus a couple more. 472 RWHP/411 RWTQ (Mustang Dyno).

  5. #4
    jweymar's Avatar
    jweymar is offline Cadillac Owners Enthusiast
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    Re: Differential Install

    Quote Originally Posted by lunarx View Post
    Whats up with your diff?
    You might want to try Ryan Cunningham of Cunningham Motors.
    He is in Lake Elsinore which could possibly be a better drive for you.
    Thanks! Nice to hear from you!

    My diff has developed clunk on top of clunk, and is whining loud. So I pulled the trigger and I am a new proud owner of Jims steel differential

    No more clunk, no more worries, no more waiting for someone to come up with a solution that works like factory.

    ohhhh, and no more money!

  6. #5
    silver02stang's Avatar
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    Re: Differential Install

    The diff swap really isn't that big of a deal. Take your time if its the first time doing it. I did mine about 2 weeks ago and it would have been done in a day if I hadn't run into a couple headaches. Listed to Rand49er and make sure to have the write-up on hand. In the write up he mentions a 21mm Gearwrench. INVALUABLE! Also, I overlooked the breather valve which is the freakin reason it took me two days to do the install. The local dealers were closed and its a dealer only item.

    Did the swap in my driveway with the car on jackstands. No "special" tools really to speak of.

  7. #6
    PISNUOFF Guest

    Re: Differential Install

    Very straight forward. You don't need to remove the upper ball joints to get the axles out of the hubs and if you can't find a 21mm gear wrench, get a 13/16 gear wrench as it's essentially the same size but easier to find. I've had axles out several times and removed my diff once. I could do it in about 4 hours now, while laying on a garage floor.

  8. #7
    maxspeed96ct is offline Cadillac Owners Connoisseur
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    Re: Differential Install

    Congrates on the steel diff !

  9. #8
    lollygagger8's Avatar
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    Re: Differential Install

    You could do it yourself no problem. Just take your time and follow the instructions.
    http://www.cadillacforums.com/forums...f-install.html

    There's the writeup w/o pics and I just reposted this with the pics in the right places like 3 weeks ago, but I can't find it. Search engine sucks on this forum, but I'll keep looking.

    Just print off the instrustions and hand em to the mechanic and say here, or if you don't want to use em wipe your a$$ with em or whatever. Can't hurt. They might just use em!

    Ya a 21mm gear wrench get's used on most of the bolts on the suspension.......GET ONE.

  10. #9
    lollygagger8's Avatar
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    Re: Differential Install

    Found the one with pics.......


    http://www.cadillacforums.com/forums...-write-up.html

    Tony,Jimmy, or Heavy can you add this to the FAQ/Do it yourself Link? Thanks fellaz

  11. #10
    lunarx's Avatar
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    Re: Differential Install

    Quote Originally Posted by jweymar View Post
    Thanks! Nice to hear from you!

    My diff has developed clunk on top of clunk, and is whining loud. So I pulled the trigger and I am a new proud owner of Jims steel differential

    No more clunk, no more worries, no more waiting for someone to come up with a solution that works like factory.

    ohhhh, and no more money!
    Wow, the Steel Diff.
    I could have used one of those.
    I just had my diff completely rebuilt by RPM Motors because it had a clutch pack problem and then somehow developed a whine after the diff bushing install.

    Definetly let us know how that Steel Diff turns out.
    Can it really eliminate all clunking?

  12. #11
    lunarx's Avatar
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    Re: Differential Install

    Quote Originally Posted by rand49er View Post
    Shane (lollygagger8) did a great writeup with pictures of his diff replacement.

    Even if you don't want to do it yourself, I'd print that off and take it to your local shop as added information ... it can't hurt (unless their ego is bruised a bit).


    EDIT: Nice to hear from you Ernie!
    Rand,
    Good advice as usual.
    It's always a pleasure to see your posts.
    I miss not bieng on here more.

  13. #12
    lollygagger8's Avatar
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    Re: Differential Install

    You have a steel diff and you aren't posting pics?? Cmon now, don't hold out on us

  14. #13
    rand49er's Avatar
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    Re: Differential Install

    Quote Originally Posted by lollygagger8 View Post
    You have a steel diff and you aren't posting pics?? Cmon now, don't hold out on us




    Lucky stiff.
    '05 CTS-V, Maggie, Kooks, Hotchkis, Ground Control, Corsa, B&M, DSS/Hendrix, Full 3M Clear Bra, Autovation, V Headrests, CTS Console, STS-V 55w Fogs, Black Vette FRCs, Specter Werkes, Katech LS9 Clutch, SS Brake Lines, Heavymetals U-Turn Fuel Line Eliminator, Momo Combat Evo Shift Knob, Wldwhl Clear Sidemarkers, Linea Corse LC855 Wheels or OEM wheels w/'06-'07 Center Caps, plus a couple more. 472 RWHP/411 RWTQ (Mustang Dyno).

  15. #14
    Willsol is offline Cadillac Owners Member
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    Re: Differential Install

    Id like to know where to purchase a steel diff.

  16. #15
    deedubb's Avatar
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    Re: Differential Install

    Will, it's a one off....only one in existence I believe.

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