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Home > Technical > Auto box hunting between gears when hot, occasional slams |
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Grue Member Since: 29 Apr 2018 Location: New Zealand Posts: 366 |
double post |
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17th Apr 2024 8:02 am |
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IanMetro Member Since: 11 Sep 2017 Location: Somerset BS21 Posts: 3115 |
This thread reminds me of the Auto Gearbox Flaring problem that effected FL2s around the MY10.
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17th Apr 2024 9:32 am |
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geotrash Member Since: 10 Nov 2012 Location: Richmond, Virginia Posts: 18 |
I wish you good luck! Happy to answer any questions I can if it doesn't solve the problem. In my research, I found that common causes for some of the behavior I was seeing were incorrect transmission fluid level, severely worn out fluid, and weak engine and/or transmission mounts. But in my opinion, it's probably the valve body 80+% of the time caused by the worn out fluid. My hypothesis: With these transmissions being so hard to service with new fluid (and rated from the factory as having a "lifetime" fluid fill), most local shops won't touch it so people just keep driving on the old fluid that's increasingly tainted with micro abrasives from ongoing wear. The old fluid wears out the solenoid bores in the valve body so that fluid leaks past making it hard to maintain the necessary pressure in the various fluid circuits. "If I can't fix it, I can fix it so it can't be fixed" 2008 LR2, 3.2L i6, auto, 230K miles 2007 GMC Yukon XL Denali, 6.2L V8, 243K miles 2012 GMC Yukon XL Denali, 6.2L V8, 141K miles, Cam Motion Stage 2 Truck Cam, upgraded TC, set up for towing |
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17th Apr 2024 2:00 pm |
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I Like Chips Member Since: 25 Jun 2017 Location: Ascott Under Wychwood Posts: 1533 |
geotrash
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17th Apr 2024 6:16 pm |
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