Results 1 to 11 of 11

Thread: Allison Fluid Cooler lines - are yours loose?

  1. #1
    Join Date
    Sep 2001
    Location
    Seattle, WA
    Posts
    250

    Post

    I noticed today while admiring the underneath of the truck that on my transmission housing the both the TO and FROM cooler lines are "loose" in the fittings - they wiggle/pull in and out about 1/8" inch. No apparent gross leaking, but there was a drop of tranny fluid on the bottom of each plastic retainer "safety" ring.

    Is everyone's/anyone else's like this? I already had the tranny completely replaced, did they not put them back on right???

    Scott
    2002 Silverado 2500HD Crew Cab/DA/LB in... Pewter!

  2. #2
    Kennedy Guest

    Post

    This is normal just like the 6.5 oil cooler lines. They are oring fittings with an "omega" clip holding them in place.

  3. #3
    Join Date
    Sep 2001
    Location
    Seattle, WA
    Posts
    250

    Post

    Thank you John! If it hadn't been replaced already, I probably wouldn't have worried!

    Scott
    2002 Silverado 2500HD Crew Cab/DA/LB in... Pewter!

  4. #4
    Kennedy Guest

    Post

    Mine were "weepy" when new. Oil on the tin plug on the bell too. Now it is all dry!

  5. #5
    BMDMAX Guest

    Thumbs up

    Ditto on that JK!

  6. #6
    Join Date
    Apr 2001
    Location
    Southern Minnesota
    Posts
    1,202

    Post

    Same here. They seem loose, but they are fine.

    I did have to have one of mine replaced @ about 1,000 miles due to a drip. After that, no problems. The fluid you're seeing is from assembly, and will dissipate with time.
    2003 Chevy 2500HD LT EC/SB D/A <br />Dark Gray, loaded..<br />Kennedy 4\" Exhaust, Headlight Harness, Access, Air Lift, Luverne, <br />Hot Juice, Mega Filter, more....<a href=\"http://community.webshots.com/user/somndmax\" target=\"_blank\">Pics</a><br /><a href=\"mailto:somndmax@yahoo.com\">somndmax@yahoo. com</a>

  7. #7
    Join Date
    Dec 2000
    Location
    Runaway Bay, TX, USA
    Posts
    37

    Post

    Brought my new truck home, 2 nights ago. After moving it, my wife noticed a small pink puddle under it. This is my first GM truck and I noticed previously that the antifreeze was pink (Dex-Cool), so I blew it off. Returned to dealer, yesterday, to have 5th wheel hitch switched from my Ford trade. Returned home last night--2 larger puddles of pink fluid. Checked it this time and it was transmission fluid! Called dealer and went back to them for service. DX--loose cooler line. It was tightened, refilled, and undercarriage cleaned. Can't believe 3 trips to the dealer (110 miles-roundtrip, each) in 2 days. Well I guess, I'm getting the break-in mileage taken care of!! Hope this is all the problems I have. Except for this, I love the truck.
    2002 Crew Cab, LS, SB, 2500HD Duramax/Allison, 3.73 LS, Trailering pkg, loaded. White/tan, Buckets

  8. #8
    Join Date
    Feb 2001
    Location
    Bismarck, ND
    Posts
    12

    Post

    Mine also began dripping at one of the cooler line fittings with only a few hundred miles on the truck. Dealer ended up replacing the complete line in order to stop the leak. No problem since.
    \'02 2500HD LT CC SB D/A, Line-X, ReTrax bed cover

  9. #9
    Join Date
    Jul 2000
    Location
    Rochester, NY, USA
    Posts
    110

    Post

    Admiring the underneath of the truck?

    We are a sick bunch!
    2001 2500HD LS Duramax/Allison Crew Cab Shortbed 4WD<br />Fold a Cover - Bed Rug<br />27\' Holiday Rambler Aluma lite Travel Trailer

  10. #10
    Join Date
    Sep 2001
    Location
    NJ / WI
    Posts
    89

    Post

    I have the same problem on my truck, and it only has 900 miles on it right now. Just looked under the truck last night and noticed the fitting was moist. I will keep an eye on it since some people have had a drip.
    Did I mention how much fun this thing is to drive?? [img]smile.gif[/img] I finally understand why so many guys on this forum say they can't get the grin off their faces. I have the same problem!! I plan on taking her to the track in the next few weeks to see how she does in stock form, I can't wait.

    Jason
    69 Chevy C-10 P/U, Supercharged 355cid, 1.66 60\' 12.25@106<br />68 Firebird, 355cid 12.50@107<br />2002 GMC 4x4 2500HD SLT D/A Ext.cab/short bed Polo Green, Arma Lined<br /><br />16.32@81 K&N <br />14.84@89.8 w/ Cold Juice(4wd)<br />14.78@92.5 w/ Cold Juice(2wd)Union Grove

  11. #11
    Join Date
    Dec 2000
    Location
    Runaway Bay, TX, USA
    Posts
    37

    Post

    After the loose cooler line was tightened, another small leak( wet spot around a screw on the bottom of the transmission) next to the filter. They backed it off and wrapped it with teflon tape. No more leaking--but hope this isn't the beginning of a bell housing leak higher up, as mentioned in another post. That leak dripped from this screw.
    2002 Crew Cab, LS, SB, 2500HD Duramax/Allison, 3.73 LS, Trailering pkg, loaded. White/tan, Buckets

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •