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transmission filter/flush 2011 gmc 2500hd

Home Forums Stay Dirty Lounge Service and Repair Questions Answered Here transmission filter/flush 2011 gmc 2500hd

This topic contains 6 replies, has 2 voices, and was last updated by Ray Thomas Ray Thomas 4 months, 3 weeks ago.

  • Creator
    Topic
  • #954496
    Ray Thomas
    Ray Thomas
    Participant

    I want to change the fluid, filters and flush the transmission and torque converter on my 2011 gmc 2500hd duramax. I saw a video online that used a Hayden fitting at the trans cooler return line. They put a clear tube from that fitting into a bucket and with the engine running poured fluid into the trans as the old fluid came out of the torque converter. I don’t know if they make a fitting like that for the 2500hd, I think they were working on a 1500. Do you have a better way of flushing the converter or a part number for an adapter?
    Thanks, Martin

Viewing 6 replies - 1 through 6 (of 6 total)
  • Author
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  • #954497
    Nightflyr *
    Richard Kirshy
    Participant

    Mileage???
    Has the transmission ever been completely flushed before?
    If not may not be the best thing to do.

    #954502
    Ray Thomas
    Ray Thomas
    Participant

    The truck has 110,000 miles and the fluid has never be changed or flushed. The spin on filter has been changed twice. Kinda dirty.

    #954503
    Nightflyr *
    Richard Kirshy
    Participant

    My suggestion would be:
    Get 3 filters, 2 cheaper one and one high grade and transmission fluid
    1 Do a spill n fill and install a cheap filter and drive it a week.
    2 repeat step 1
    3 repeat step 1 but install the high grade filter and call it good.

    #954505
    Ray Thomas
    Ray Thomas
    Participant

    Should I replace the spin on filter each time too?

    #954506
    Nightflyr *
    Richard Kirshy
    Participant

    Yes

    #954507
    Ray Thomas
    Ray Thomas
    Participant

    Okay, thanks I’ll getter done.

Viewing 6 replies - 1 through 6 (of 6 total)

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