1993C4LT1

Hey guys, going to change my trans fluid this week. Trans was rebuilt May 2015, and filled with Dexron 3. I've only put 4k miles, but I want to change it because I am weird like that. Should I flush it? Or just drain, new filter and refill? Stick with the Dexron 3 fluid?

Cjunkie

Just drain the pan, change filter and refill with Dexron 3. Mine took almost 6qts.

Matatk

Just drain, filter, fill should be sufficient.

Loosen the rear pan bolts first and let the fluid drain a bit that way, prevents making a bigger mess.

Torque the bolts to the correct spec (and in stages) when done to prevent leaks.

1993C4LT1

Thanks guys! Not to sound dumb, but is it ok to go by "feel" when tightening? Can't find my torque wrench. If it is necessary, I'll buy another one.

Cjunkie

That's all I did. Start from the middle of the pan and work around.

Cjunkie

Great tip on draining the pan.

belairbrian

I did mine when i bought it. Went ahead and put a pan with drain from Summit on.

I went with Dex VI. Amazon has a good price on the AC Delco brand.

1993C4LT1

Does it matter what brand of Dexron 3?

Joe C

BTW, only use the GM/delco service filter kit. here a little FYI link...

https://www.corvetteforum.com/forums...rvice-kit.html

1993C4LT1

Thanks Joe! I remembered I asked last year, and you mentioned the filter. Thanks again

Matatk

Something else I just remembered - the filter has a thick o-ring/seal on the tube that slides up into the trans. Sometimes it sticks inside the trans so use a hook pick to get it out, can't install the new filter when it's stuck in there.

1993C4LT1

Yup, I have a few picks. Thanks Matatk

1993C4LT1

Bought the filter today from the Chevy dealer. Same part numbers as Joe C linked. I could only find Dexron -III fluid. Is that Ok? On the bottle, it says it will work for GM cars. Haven't started the job, but will tomorrow. And for a future reference to anyone doing this, this exhust bolt will be in the way of one of the trans pan bolts. I assume I'll be able to just loosen it, and move out of the way. Pic

belairbrian

I had to move the clamp too just took a little PB blaster to get the nut moving

if the DEX -III is a known brand it should be fine
GM stopped licensing DEX-III several years back and now each company is free to make what they want and call it DEX-III compatible

when they were licensing it GM would verify the chemical makeup

1993C4LT1

Thank you sir

1993C4LT1

Hey guys. Filter came out with the o ring. Though I will double check to see if any o ring is still in. As far as putting the filter back in, I just lube the o ring and push it till it no longer is able to move upward?

Oh and the filter I removed says "made in China"

70ZZ3 96LT4

My 1996 Corvette GM shop manual has 97 INCH POUNDS of torque for the transmission bolts. Buy a INCH POUND torque wrench, lots of Corvette bolts use INCH POUNDS, valve cover bolts and oil pan bolts.

1993C4LT1

I'm paranoid. So I have to ask. Do I have the filter in correctly? I've pushed it up as much as I can. Pics

Joe C

was that the original OE filter? seems to me, the GM/delco service replacements are made in the USA -

- a small, dedicated, inch-pounder is a must for pan/VC work where, equalizing the clamping force of the hardware is a must. smaller specialty, units seem to have better accuracy than their big brother counterparts -

best I can tell, it looks like it's installed correctly.

1993C4LT1

No torque wrench for me, we I cant find it

​​​​​​​Thanks! Will put the pan on, and tighten by hand. Hopefully it won't leak