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Thread: 4L60 tune question

  1. 01-22-2014 #1
    rpturbo
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    4L60 tune question

    So I have a 2001 Silverado 5.3 with a 4L60E in a 1994 S-10. The tune was started by a local tuner, but was cut short due to breaking an aftermarket driveshaft. So here is the deal, when I full throttle shift into 3rd, it's almost like someone throws it into neutral. If I back off, it will engage, and then I can get back in it, and have no noticeable slippage. I have no problems other than that. I know he bumped up the line pressure, but I don't know where that really is in the tune. I am sure he made some other changes too. Can some one tell me a few things:

    1) what do I need to post up to have someone point me in the right direction? Just a tune, or a log, if so, of what?
    2) If I need to post a log, can you please tell me what and where I need to go to log it?

    BTW I have a HPT pro, and have almost no idea how to use it so far.

    Thanks!!
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  2. 01-22-2014 #2
    5FDP
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    Wouldnt hurt to post both.

    That way "we" can see whats been changed and what you are watching/logging in the scanner.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.
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  3. 01-22-2014 #3
    rpturbo
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    I can make a log on Friday when the temps are hopefully in the 2 digit range. Is there anything specific I need to log? I am sure I can find a how to on how to log, just not sure what all I need to log. I guess trans pressure, but anything else? Any specific way I need to do the log?
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  4. 02-19-2014 #4
    rpturbo
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    I finally got my truck out and tried to do some logging, however, I can not get any of the transmission pids to log. Is there anything special I need to do? It logged everything else I had up, but nothing as far as line pressure of 2-3 shift info. Any ideas?
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  5. 02-20-2014 #5
    THE CHAD
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    that sounds to me like the typical 4L60E FLAIRING INTO GEAR.....typical 2nd to 3rd flair mate....those 2nd/3rd clutches do wear out and can cause the flair
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  6. 02-20-2014 #6
    rpturbo
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    Kind of what I was thinking, but wanted to see if I could log the pressure and shift delay and things to see if I could help identify, but nothing trans related would log.
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  7. 02-20-2014 #7
    Montecarlodrag
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    A good tuner can tell you if your transmission needs repairs or not
    4L60E trannys are simple enough to troubleshoot using the scanner
    9 sec Montecarlo SS
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