Questions on 8 speed pan drop and refill

[16sierra]

I, like many others, have the 8 speed with harsh shifting and shudder. I've got around 61,000 miles and took the truck in one last time to try to get the TSB for trans flush and fill with the Mobil 1 fluid done while it was under warranty but the dealer wouldn't do it. I'm don't want to give them the money to do a pan drop/flush/whatever they would do and would prefer to drop the pan, change the filter, and refill myself. However, I don't have a lift or transfer pump to refill the trans. Can I DIY this?

 

I read this thread: https://www.gm-trucks.com/forums/topic/234681-8-speed-fluid-and-filter-change/

 

 

What new pan are guys using that has a drain plug welded in? What transfer pump would you guys recommend to refill? Finally, with that transfer pump, could I pump the fluid out of the pan somehow so I don't dump it all over the floor before I remove all the pan bolts? I just see a lot of things potentially going wrong, but would prefer not to give the worthless dealer any of my money if I can avoid it.

[Eddie 70]

 

Yes you can do this. I have a couple of these hand pumps. This one came from Wally World. Pull the fluid out of the pan with the pump into a container. Then you can crawl under the truck and drop the pan without so much fluid in the pan. It'll probably still have some fluid but not enough to give you a bath.

 

Edited August 17, 2020 by Eddie 70

[JimCost2014]

23 hours ago, 16sierra said:

I, like many others, have the 8 speed with harsh shifting and shudder. I've got around 61,000 miles and took the truck in one last time to try to get the TSB for trans flush and fill with the Mobil 1 fluid done while it was under warranty but the dealer wouldn't do it. I'm don't want to give them the money to do a pan drop/flush/whatever they would do and would prefer to drop the pan, change the filter, and refill myself. However, I don't have a lift or transfer pump to refill the trans. Can I DIY this?

 

I read this thread: https://www.gm-trucks.com/forums/topic/234681-8-speed-fluid-and-filter-change/

 

 

What new pan are guys using that has a drain plug welded in? What transfer pump would you guys recommend to refill? Finally, with that transfer pump, could I pump the fluid out of the pan somehow so I don't dump it all over the floor before I remove all the pan bolts? I just see a lot of things potentially going wrong, but would prefer not to give the worthless dealer any of my money if I can avoid it.

 

4 hours ago, Eddie 70 said:

 

Yes you can do this. I have a couple of these hand pumps. This one came from Wally World. Pull the fluid out of the pan with the pump into a container. Then you can crawl under the truck and drop the pan without so much fluid in the pan. It'll probably still have some fluid but not enough to give you a bath.

 

No dip stick/tube on the 8 speeds.

[Gagliano7]

you run the hose down to the fill plug. Pull plug and put house into the pan.