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Thread: Rads

  1. #1
    Join Date
    Apr 2001
    Location
    Calgary, AB. Canada
    Posts
    87

    Question Rads

    On my 2003 can someone please tell me from the front to the back what are the various rads. The first small one has a number on vanes pushed over and blocked.

    Any idea how this could happen??
    2003 GMC 3500HD D/A, EC/LB, 4x4


  2. #2
    Join Date
    Apr 2001
    Location
    CA
    Posts
    13,579

    Arrow

    Tranny cooler (the small one), A/C condensor, Intercooler, then radiator.

    The fins are very delicate, on all of them. A bird strike (and even some large flying insects) can flatten the fins easily. You can get a comb to straighten them from any radiator shop, and some auto parts stores. DON'T use a screwdriver, as you can easily puncture or damage the tubing and fins, it's very thin. If you don't want to use/can't get a comb, a plastic spoon or popcycle stick will work, but very tedious.
    1985 Blazer 6.2
    2001 GMC 2500HD D/A
    dmaxmaverick@thedieselpage.com

  3. #3
    Join Date
    Apr 2001
    Location
    Calgary, AB. Canada
    Posts
    87

    Thumbs up Fixed the fins

    If I had known how easy it was to take the grille off, I would have done it myself. The good news is that the fins are now open and the tranny temp is back to its old readings. 20% of the fins were closed.

    Thanks for the info.

    OBC
    2003 GMC 3500HD D/A, EC/LB, 4x4


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