My 04 escalade is going in to get the corvette servo mod next week and I have been debating on whether I should have the tranny flushed and a new filter put in. The truck has 93k on it and looks like it has been well cared for but I unfortunately don't have any service records on the truck so I cant say if it has ever been changed. I have heard people say if it hasn't been changed in 100k then your better off not touching it, well its pretty close to 100k so whats everyones suggestions? By the way this would be a real flush done by a guy that only does transmissions, not one of those partial flushes done by a jiffylube or something.
Tranny fluid, to change or not to change
- Thread starter hoss08
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SLCHOE
ASE Master Certified + (L1)
My opinion. Do a filter/drain refill. Look at the plug. Any metal on it? Drive it 1000 miles. If your fluid looks clean after that, running the dipstick against a clean paper towel, I'd say you made the right choice. Of course the torque converter will have stored quarts of oil in it.
mattluttrell
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I did a full fluid swap using the line by the air breather. It was so damned easy. I used the clear tube from my aquarium vaccuum. Was able to see the fluid change from black to pink. I knew it was clean.
Did the servo mod after that. It shifts great and I can trust it for a long time. Bummer the 04 doesn't have the rear diff drain plug. You could knick them all out at once.
Did the servo mod after that. It shifts great and I can trust it for a long time. Bummer the 04 doesn't have the rear diff drain plug. You could knick them all out at once.
doylee4693
Tahoe User
Do a drain and refill, dont do a flush. I just changed mine at 86k and the fluid looked brand new. Do the transfer case at the sane time. The tranny place charges 15 extra to do it so its definatly worth it.
I changed the front diff and the transfer case fluid myself a couple weeks ago. I have the gear oil to change the rear just haven't gotten around to it yet. I never really looked at the rear diff yet to find a drain plug, Im sure it has a fill plug so I can just loosen up the cover to drain the fluid if worse comes to worse.
Change out all the fluid as mentioned above via the cooler line near the air filter.
There is a write up on here how to do it and what parts you will need.
Trans fluid is a hydraulic fluid, not a gear oil. so the trans does destroy it. it doesn't last forever.
Simply swapping 4 quarts out of a total of 12 doesn't accomplish anything but waste your time and money.
There is a write up on here how to do it and what parts you will need.
Trans fluid is a hydraulic fluid, not a gear oil. so the trans does destroy it. it doesn't last forever.
Simply swapping 4 quarts out of a total of 12 doesn't accomplish anything but waste your time and money.
clandr1
Full Access Member
+1.
Do NOT take it to a shop to have it flushed. Use the method in the write up below. It will take you a couple hours max, and will be much better for the transmission. Make sure you drain the pan and change the filter BEFORE doing the fluid exchange.
Note: the thread pattern for the nipple in the write up was different than what my '05 had in the radiator, so I did have to improvise slightly.
http://www.gmfullsize.com/forum/showthread.php?t=179148
negative.
Do the first drain in the write up, this will empty the pans and make for a much cleaner filter swap.
Why slosh and spill 4 quarts of some very nasty shit all over you and your floor.. when you can not spill a drop.
The method in the write up with a friend helping (start/stop engine and go through the gears), took me maybe 30 mins with a beer in one hand.
Do the first drain in the write up, this will empty the pans and make for a much cleaner filter swap.
Why slosh and spill 4 quarts of some very nasty shit all over you and your floor.. when you can not spill a drop.
The method in the write up with a friend helping (start/stop engine and go through the gears), took me maybe 30 mins with a beer in one hand.
doylee4693
Tahoe User
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