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An overfilled 4L60e

This is a discussion on An overfilled 4L60e within the Technical / Maintenance forums, part of the General Discussion category; Hey guys. I changed transmission fluid today and made the bonehead mistake of overfilling the transmission after I put the ...

  1. #1
    alexmerchant
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    An overfilled 4L60e


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    Hey guys. I changed transmission fluid today and made the bonehead mistake of overfilling the transmission after I put the pan back up. So now I think I'm left with 2 choices, drop the pan and start over or come up with something crafty. I should have put a drain plug on the pan! Gah, too late now, but I have a plan. Put a piece of aquarium air tubing down the dipstick hole and into the pan, and attach a soap dispenser pump to the other end. Any ideas as to if this will work to remove approximately 1/2 a quart of fluid? Any other ideas?

  2. #2
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    Re: An overfilled 4L60e

    isnt there a drain plug up on the front of the tranny?
    1997 Chevy 1500 ext cab short bed 5.7 vortec 3.42 peg leg...Bone stock

  3. #3
    Registered User Patrck's Avatar
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    Re: An overfilled 4L60e

    It will if the soap pump can overcome the air in that much hose and lift fluid.

    '01 2500 6.0 K&N, Flowmaster

  4. #4
    LM7 Outlawz2004's Avatar
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    Re: An overfilled 4L60e

    by you one of those small hand pumps and put it down the dipstick and pump some out.

  5. #5
    alexmerchant
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    Re: An overfilled 4L60e

    There isn't a drain plug on the pan, and I don't believe there is a tranny cooler on the truck I'm working on. Not auxillary that is. Is there a drain somewhere I'm missing. Any other ideas besides my air hose/soap dispenser idea?

  6. #6
    potato gon' potate SlvrdoHDmax's Avatar
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    Re: An overfilled 4L60e

    the idea with the aquarium tubing would work. try getting a transfer pump though.

    and no, the 4l60e has no drain plug

    http://www.harborfreight.com/multi-u...ump-66418.html

    Other than that, loosen the pan and let it tilt forward to drain some fluid out. Loosen the bolts towards the rear some but remove bolts in the front so that the rear bolts support the pan but allow it to pivot.
    Last edited by SlvrdoHDmax; 05-20-2010 at 09:25 PM.

    2005 2500HD>Duramax>EFI Live DSP5 by Punisher Performance>FASS Platinum LP>AFE Turbo MP>EGR Blocked>PCV Rerouted>Mild audio setup>4" Exhaust>Alligator Performance Race Fuel Valve>Edge Insight CTS

  7. #7
    alexmerchant
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    Re: An overfilled 4L60e

    Awesome idea with the transfer pump. Any chance a really small NAPA store or a Farm and Home would have one?

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    Re: An overfilled 4L60e

    Remove the return line from the transmission cooler going back into the transmission, put a hose on it, and put that down in an oil catch pan or bottle. Have someone watch it, or you watch it and have someone start the truck, let the pump on the truck pump out the 2 quarts, then shut the truck off and hook the line back up, and re-do your fluid fill. Just don't let the pump run completely dry for long and burn it up.
    Last edited by Mike2002K1500; 05-20-2010 at 09:40 PM.
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  9. #9
    LM7 Outlawz2004's Avatar
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    Re: An overfilled 4L60e

    some 4l60s do have drain plugs. Mine has one and I know of a few people who do as well. Only problem is they usually cant get the dang plug out, so its pretty much useless anyway.

  10. #10
    alexmerchant
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    Re: An overfilled 4L60e

    Quote Originally Posted by Mike2002K1500 View Post
    Remove the return line from the transmission cooler going back into the transmission, put a hose on it, and put that down in an oil catch pan or bottle. Have someone watch it, or you watch it and have someone start the truck, let the pump on the truck pump out the 2 quarts, then shut the truck off and hook the line back up, and re-do your fluid fill. Just don't let the pump run completely dry for long and burn it up.
    These trucks don't have a tranny cooler to my knowledge. Welcome to the outdated, underpowered OBS, LOL :)

  11. #11
    potato gon' potate SlvrdoHDmax's Avatar
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    Re: An overfilled 4L60e

    A lot of obs trucks came with a cooler. Usually came with the z71 or with a towing package. I know mine has one.

    2005 2500HD>Duramax>EFI Live DSP5 by Punisher Performance>FASS Platinum LP>AFE Turbo MP>EGR Blocked>PCV Rerouted>Mild audio setup>4" Exhaust>Alligator Performance Race Fuel Valve>Edge Insight CTS

  12. #12
    potato gon' potate SlvrdoHDmax's Avatar
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    Re: An overfilled 4L60e

    Quote Originally Posted by alexmerchant View Post
    Awesome idea with the transfer pump. Any chance a really small NAPA store or a Farm and Home would have one?
    A farm and home store should carry something like that or even napa. wouldnt hurt to give a call and ask

    2005 2500HD>Duramax>EFI Live DSP5 by Punisher Performance>FASS Platinum LP>AFE Turbo MP>EGR Blocked>PCV Rerouted>Mild audio setup>4" Exhaust>Alligator Performance Race Fuel Valve>Edge Insight CTS

  13. #13
    alexmerchant
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    Re: An overfilled 4L60e

    Hmmm....learn something new every day. The only OBS trucks I have ever owned have been sportier rcsb 2wd's, so I have never had a tranny cooler with them. I just assumed none of them had them unless they had a combo like a 454 80e 14 bolt.

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    Re: An overfilled 4L60e

    What's in there....Mercron/Dexron? You can siphon that out with a really small tube (got mine from a farm & ranch supply store) on a warm day. It will not be a fast process.

    Yes, it will siphon. I didn't think so at first, but my son (a chemical engineer and sort of an expert in fluid dynamics) convinced me otherwise.
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  15. #15
    Captain Dickface Cartman372's Avatar
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    Re: An overfilled 4L60e

    Quote Originally Posted by alexmerchant View Post
    These trucks don't have a tranny cooler to my knowledge. Welcome to the outdated, underpowered OBS, LOL :)
    They may be "outdated" but they are far from underpowered and they will sure outlast an NBS/NNBS.

    Quote Originally Posted by sw45 View Post
    A lot of obs trucks came with a cooler. Usually came with the z71 or with a towing package. I know mine has one.
    Mine has one as well and I only have the towing package.

  16. #16
    alexmerchant
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    Re: An overfilled 4L60e

    Quote Originally Posted by MacQ View Post
    What's in there....Mercron/Dexron? You can siphon that out with a really small tube (got mine from a farm & ranch supply store) on a warm day. It will not be a fast process.

    Yes, it will siphon. I didn't think so at first, but my son (a chemical engineer and sort of an expert in fluid dynamics) convinced me otherwise.
    Yes, I refilled with Dex/Merc. So it is possible to siphon without a pump? Just suck like a straw or what?

  17. #17
    potato gon' potate SlvrdoHDmax's Avatar
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    Re: An overfilled 4L60e

    Get some small tubing like Mac mentioned and run a bunch of it down in there so the fluid will put pressure on the tubing and it might siphon itself. If it doesnt work, just suck on it to get it started.

    2005 2500HD>Duramax>EFI Live DSP5 by Punisher Performance>FASS Platinum LP>AFE Turbo MP>EGR Blocked>PCV Rerouted>Mild audio setup>4" Exhaust>Alligator Performance Race Fuel Valve>Edge Insight CTS

  18. #18
    JoshTheCanadian
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    Re: An overfilled 4L60e

    Quote Originally Posted by alexmerchant View Post
    These trucks don't have a tranny cooler to my knowledge. Welcome to the outdated, underpowered OBS, LOL :)
    errr. It has one.

  19. #19
    LM7 Outlawz2004's Avatar
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    Re: An overfilled 4L60e

    Quote Originally Posted by Cartman372 View Post
    They may be "outdated" but they are far from underpowered and they will sure outlast an NBS/NNBS.
    .
    That hasnt been proven yet, the NBS trucks seem to be going just as many miles as the older trucks. And how would a 17yo know about how long an OBS will last.LOL. dont get sidetracked on this thread with nbs vs obs crap. OP, are you sure you even overfilled it, you checking it warm arent you, when its cold it will show overfull. Also, you can buy those little pumps everywhere, hell even Biglots has them for a few dollars. Comes with the tubing too, just shove it down and suck some out.

  20. #20
    alexmerchant
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    Re: An overfilled 4L60e

    Yeah, I know how to check tranny fluid, lol. No OBS vs NBS crap please. I love both. I'll siphon some out tomorrow in the a.m. using a transfer pump.

 

 
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