4l30 problems

[vafiatx19]

I would not believe it if I hadn’t done it myself! Drained and refiled fluid with generic Advance Auto DEXIII/MERC refilled shifted through gears NO MORE LOCK UP IN REVERSE!!! Finished filling and everything’s good. Still a little harsh shifting but will try a couple more drain and fills and see what happens. Thanks all I will keep you updated. Oh yes Mile High VX I do have a Fiat X1/9. Doing a total restore at the time, I’ve had a few.

[vafiatx19]

Do not use the high mileage Valvoline ATF in these Transmissions. They do not like it!! I found out others have had problems too.

[nfpgasmask]

You will probably get some good info over on PlanetIsuzoo.com. Also, If I were you, I would change the tranny filter also.

Bart

[Mile High VX]

Oh yes Mile High VX I do have a Fiat X1/9. Doing a total restore at the time, I’ve had a few.

SWEEEEET!

Photos when you're done...