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  1. #1

    Question 4L80E trick question

    My 04 sub which is 2 whl and is 3/4 ton has a 4L80E tranny and I am wondering if I can turn the converter on and off. The reason is that in my old sub which was a 96 2 whl 3/4 ton with a 5.7 and the same tranny, I could come off of the converter by a slight touch of the brake pedal. This was so cool when towing or going up a hill on overdrive. I have tried the same trick with the 04 but to no avail. The only thing I can do is depress the throttle down about 1 inch or so to get down a gear then let the throttle up a little.
    The Muffinman
    Job shop owner

  2. #2


    The best thing you could do if you do allot of towing is get a programmer and adjust the transmission settings. I know edge products sell these type of programmers. I sell some on my site.
    Last edited by ljjcsautomotive; 08-16-2007 at 09:32 AM.

  3. #3


    there is a sticker on my door that says when towing or heavy loads do not use the overdrive selection just use drive......mike
    Michael Collins
    1993 4X4 Suburban
    many other toys as well

  4. #4
    Jr. Apprentice
    Join Date
    Aug 2007
    No. central Arkansas

    Default Muffinman..

    I have 2000 1500 with 5.3L and same transmission. Do you have the Tow/Haul switch on shift lever? If so, engage the tow/haul mode as it changes the shift pattern of the tranny and does it quite well.

    If you don't have towl/haul, use 3rd gear only.

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