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  1. #1

    Default Transmission Went BOOM!!

    1997 K1500 Suburban

    Something is not quite right here...
    Click image for larger version. 

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    Picture taken with cell phone from passenger side. Rear of transmission, before the transfer case.
    Anybody have any thoughts on what would cause the failure?

  2. #2


    DAMN ! How many miles on the trans?

  3. #3


    Only about 350 since a rebuild. Guy that did the rebuild is gonna come get it tomorrow to figure out what the heck happened.

  4. #4


    That is crazy! Sorry I have no clue! But thanks for the pic! Sorry bout your luck!

    2006 Duramax LBZ
    Edge Evo
    4'' Diamond eye to 6'' tip
    16'' ion alloy, 33'' fierce attitudes
    Lots of work left to do!

  5. #5


    HOLY F%@#...........Sorry to see something like that.....Good Luck.


    5.3 l 3.73 l G80

  6. #6


    When they fail it usually isnt that catastophic, be interesting to hear what went wrong.

  7. #7
    stephan's Avatar
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    Sep 2010
    Far West, Oregon USA,
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    The last one that I saw that was that bad, no one could determine what went wrong. The best guess was that something caused it to try & select two gears at once, or that there had been a small piece that broke off & wedged between two gears at once causing failure, but nobody ever knew for sure.....
    1988 Chevy C-3500 2wd (no pic)
    350 c.i. 5.7 L Stock Block, 4 Bolt Mains
    L-31 Vortec Heads, Edelbrock Cam & Intake,
    Holley 650, Flowtech Headers, Magnaflow exh.
    Jet Trans 700R4, B&M Ratchet, 4:10 gears,
    3" susp. lift kit "shadetree"
    No rev limiter, No speed limiter lol

  8. #8


    d@mn! sorry to hear (and see) that.
    2004 Silverado 2500 Crew Cab 4x4, AMSOIL EA air filter, Granatelli MAF sensor, Throttle body spacer, Magnaflow exhaust (true dual to 2 in 1 out muffler), 6" ProComp lift (add a leaf and 5" superlift rear block), Bilstein shocks, 35's (Cooper Disoverer ST) and 4.10 gears, Rhino Liner, EGRUSA fender Flares and widow visors, extended stainless steel brake lines, firestone airbags w/onboard air compressor, Pioneer Avic X940BT navigation, Accel backup camera.
    1960 Land Rover Series II 88
    2001 Pontiac Sunfire
    2013 Toyota Avalon Limited (Wife's Car)
    NRA Life Member

  9. #9


    Looks like something just broke off inside and tore through the case, not unlike snapping a rod off in an engine and punching it through the block.

  10. #10


    If I had to guess where on the transmission that picture was taken, I'd have to guess that's where the transfer case bolts onto the tailshaft extension housing. I have no idea how there would be that much stress on that part unless you got the whole truck stuck on a rock right around where the hole is. There shouldn't be any torsional force in that region to cause the case to get stressed and fail like that. The good news is that a replacement tailshaft housing should be pretty easy to find in a junkyard, shouldn't cost a ton, and should be pretty easy to remove and replace. The big question is what caused all the stress at that part to cause it to happen.

    1991 Chevy Suburban 1/2 ton 2WD w/ chevy SBC 350-3/4 ton drivetrain upgrade w/4.10 gears 200K miles
    2005 Saturn ION-2 Stock 277K miles
    1982 Bronco, 1993 Bronco (sold), 1971 M35A2 Deuce and a Half

    There are 10 kinds of people, those who understand binary, and those who dont...

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