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Thread: Geartrain noise in 4L60E second gear causing "knock" retard

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  1. 04-15-2013 #11
    Fast355
    Fast355 is offline
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    Quote Originally Posted by sherlock9c1 View Post
    I don't suppose you ever get to 4400rpm in 4th... 2nd and 4th gear in the 4L60Es run the rear planetary gearset, and it's possible that this particular trans may have some needle bearings starting to wear. How many miles on it? Also, does it make any gear noise in reverse?

    Never have heard any noise in reverse. This trans is the original from 97 and has 80,005 miles as of this morning. Transmission has been JUNK since 38,000 miles. Just keeping it until I find the time to track down a 4L80E, rebuild it and swap it in.

    Considering 3,100 rpm in 4th is 101 mph, 4,400 rpm is not going to happen with the current gearing and tire size.
    Last edited by Fast355; 04-15-2013 at 07:30 AM.
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