Draining transmission pan 2008 Tahoe

ridewot · Jul 8, 2024

So I’m only trying to suck out the oil in the pan from the dipstick/ filler tube, was wondering when I suck out what’s in the pan if I start the engine run it for maybe 20 seconds and shut it off I know I could probably get more oil out of it. That shouldn’t hurt anything if I start it and then shut it off for a short time ?

Thanks for the help !!
PS I replaced the filter about 7000 miles ago just trying to freshen up the oil a little!

tom3 · Jul 8, 2024

I wouldn't start the engine with the pan already drained. That would have the internal pumps trying to pull fluid and might suck air. Just get the 4 quarts out with the suction pump and go with that.

ridewot · Jul 9, 2024

tom3 said:
I wouldn't start the engine with the pan already drained. That would have the internal pumps trying to pull fluid and might suck air. Just get the 4 quarts out with the suction pump and go with that.

Yes probably right!! Thanks for the reply

B-train · Jul 9, 2024

Or, drop the pan as far as possible with only a back bolt holding it loosely and suck it dry that way. I've done that on the 6L80 and usually get about 5-6 quarts out. Then button it back up and fill.

ridewot · Jul 9, 2024

So I removed 4 Quarts of trans fluid and I have a gallon of Valvoline Full Synthetic Oil, that should be mixing it with what I have there now ?

B-train · Jul 9, 2024

Yes, all good. It won't matter

Draining transmission pan 2008 Tahoe

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