Complete Trans Fluid Change

[Jason in DLH]

Nice work! I’ve got a 10’ hose coming that I’ll cut to length to make it to the bottom and suck the fluid out before dropping the pan. I’ll be attaching the hose to a Capri Tools Vacuum Bleeder which I originally got for bleeding brakes but have found multiple uses for it such as this:

 

[JTRATX]

For those that did the pump out of the upper hose to radiator, do you recall how much was needed for a refill?

I'm assuming that gets most of the torque converter and also most of the fluid in the pan?

 

[Jason in DLH]

I’ll be doing this tonight and I’ll let you know how much I add. I have to confirm when I’m under the truck that I do indeed have the 6L80 transmission.

 

[Bob2C]

For those that did the pump out of the upper hose to radiator, do you recall how much was needed for a refill?

I'm assuming that gets most of the torque converter and also most of the fluid in the pan?

It’s about 5 to 5.5 qts. Once you see air bubbles you need to stop. You don’t want run pump dry. There is still a bit left in pan and a full torque converter. (About 6 qts). Now you can drop the pan without making a complete mess.

This is a great video

Sent from my iPhone using Tapatalk

 

[JTRATX]

It’s about 5 to 5.5 qts. Once you see air bubbles you need to stop. You don’t want run pump dry. There is still a bit left in pan and a full torque converter. (About 6 qts). Now you can drop the pan without making a complete mess.

This is a great video


Sent from my iPhone using Tapatalk

Great video! That should be a sticky video on the DIY maintenance.

 

[Bob2C]

Great video! That should be a sticky video on the DIY maintenance.

Yep. That’s how I learned to do mine. I don’t know how he gets the tubing to stay in the radiator. Mine blew out and made a mess. I had to have someone hold it in. That’s why I suggest the parts above. No chance for mess.


Sent from my iPhone using Tapatalk

 

[Jason in DLH]

Definitely a great video!

 

[HACK BLOCK]

So. I originally got the oil out of the pan by using the method of tapping the lower trans line (its the one that oil will be pumped out of) on the driver side for my 18 Tahoe. Start vehicle and let trans pump bring out oil until you see air bubbles. I then dropped the pan partially, changed the filter, magnet and wiped out pan. Then put about 8 quarts back in and begin to pump again until fluid was cherry red. I suspect I got about 10 or so of the 12 qts out that way. Then just topped off to bring up to fill mark. I did some towing over the summer and just wanted to do a quick fluid exchange without going through the hassle of disconnecting the line so I picked up a pump. It worked great. It got out about 5.25 qts. The only thing is that the suction line is not long enough so I picked up clear tubing at Lowe’s. 3/8 OD. Fit over pump tubing snug. Just make sure that the bought tubing is long enough to make your connection outside of the dipstick. I did the fluid exchange on a stone cold vehicle. I put back exactly what I took out. Easy transfer.

One thing to note. The pump will need to be primed with oil before it will extract.
Suck on line until trans oil reaches past pump. Lol.


Hope this helps







Sent from my iPhone using Tapatalk

never needed to prime my pump and I have the same one

 

[Bob2C]

never needed to prime my pump and I have the same one

Hmmm. Interesting.


Sent from my iPhone using Tapatalk

 

[Just Fishing]

So. I originally got the oil out of the pan by using the method of tapping the lower trans line (its the one that oil will be pumped out of) on the driver side for my 18 Tahoe. Start vehicle and let trans pump bring out oil until you see air bubbles. I then dropped the pan partially, changed the filter, magnet and wiped out pan. Then put about 8 quarts back in and begin to pump again until fluid was cherry red. I suspect I got about 10 or so of the 12 qts out that way. Then just topped off to bring up to fill mark. I did some towing over the summer and just wanted to do a quick fluid exchange without going through the hassle of disconnecting the line so I picked up a pump. It worked great. It got out about 5.25 qts. The only thing is that the suction line is not long enough so I picked up clear tubing at Lowe’s. 3/8 OD. Fit over pump tubing snug. Just make sure that the bought tubing is long enough to make your connection outside of the dipstick. I did the fluid exchange on a stone cold vehicle. I put back exactly what I took out. Easy transfer.

One thing to note. The pump will need to be primed with oil before it will extract.
Suck on line until trans oil reaches past pump. Lol.


Hope this helps







Sent from my iPhone using Tapatalk

I have that same exact pump.
I modified the housing to flow more air, and i usually put a box fan blowing on it when running it.

I prime the pump using my power vac brake bleeder.

I also took the pump apart and found it to have a decent design for the money.