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Automotive Transmission Forum

Professional automotive forum for discussion of system analysis, diagnosis, and repair of vehicle transmissions, transaxles, and drivetrains. This forum is for experienced automotive repair professionals only, membership required.

Continue to the description of our next automotive discussion forum, the Classifieds Forum.

Recent Automotive Discussions in the Automotive Transmission Forum

truck won't move when temp is 5 below or colder
03/26/2026 in the Transmission Forum
[Transmission: 09 GMC Sierra 3500 HD SLT 6.6L] This truck is not normally driven in the winter. Customer says when he starts it up after sitting in sub zero weather for several weeks it starts ok but won't move until it has been running for several minut...
Driveshaft yoke leak
03/19/2026 in the Transmission Forum
[Transmission: 21 Chevrolet Silverado 2500 HD High Country 6.6L] Transmission model 10L1000 10 speed...Truck has a leak around the rear transmission seal area, it is leaking from the center hole of the driveshaft yoke metal plug. I see where GM has issue...
Toyota/Lexus UA-80 Transmissions
03/04/2026 in the Transmission Forum
My niece and nephew have a 2019 Camry with 35k miles and a 2025 Grand Highlander with 16k. I understand that both are equipped with versions of the UA-80 transmission. I see that there is a class-action lawsuit pertaining to this transmission. I have read...
8HP70 fluid
02/13/2026 in the Transmission Forum
Parts store catalog list Dexron VI for the Chrysler 8HP70 trans. Is that ok to use. OE fluid is so pricey. Found some ZF fluid online a little cheaper.
Transfer case fluid
02/08/2026 in the Transmission Forum
[Miscellaneous: 01 Ford F-250 Super Duty Lariat 5.4L] I am going to change the fluid in the transfer case . No problems just gonna do it because it has 247k miles on the clock. Can anyone tell me what today's recommended fluid type is? I have found so ma...

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