2020 with 10L80 transmission: how to fill fluid?

[persistent]

i'm almost ready to test my dod delete work, and i need to refill my transmission fluid. i have 12 qts of dexron ulv on hand and another 5 qts ordered.

i had the radiator/cooler disconnected and drained the transmission fluid from the pan and replaced the filter. i had to undo the 8 mm hex fitting on the left side of the transmission pan to drain it.

i see comments that suggest there should be a fill/vent plug on the right side of the transmission pan, but i couldn't find it on the 10 speed transmission. additionally, i don't see a transmission dip stick in the engine compartment. i only have the service manual for the 6 speed transmission, so i can't find good manual info for the 10 speed.

can someone give me input on the fill process for this transmission? i would like to do a flush while i'm at it, but that seems pretty challenging to do without a dipstick tube for the filling.

 

[persistent]

looks like the game is to do an initial fill to the bottom of the fill plug, close plug, start engine, and continue filling until you get to the bottom of the fill plug again. flushing requires going back and forth with adding fluid via the fill plug on the bottom and removing fluid via right/output transmission cooler line in the radiator.

what a pain.

 

[Doubeleive]

looks like the game is to do an initial fill to the bottom of the fill plug, close plug, start engine, and continue filling until you get to the bottom of the fill plug again. flushing requires going back and forth with adding fluid via the fill plug on the bottom and removing fluid via right/output transmission cooler line in the radiator.

what a pain.

you can retrofit a dipstick

 

[jyi786]

you can retrofit a dipstick

I saw this somewhere before but couldn't find it again. Isn't there a place that sells a retrofit dipstick, and would it work for our transmissions?

Also, I've done 4 transmission services for my 10L80, and the way it was described in this thread, is exactly how to do it. It's an ultra pain in the rear.

Edit: this is the one I had found before, but it's for a 6L80/90.

JRE Dipstick and Tube Kit 6L80E & 6L90E

Jannetty Racing is proud to offer our in-house developed 6L80E/6L90E Dipstick Tube! No more crawling under your car to check your transmission fluid level. The factory fluid fill level is prone to allowing starvation during hard launches at higher power levels - this dipstick tube NOT ONLY...

jannettyracing.com

 

[Doubeleive]

I saw this somewhere before but couldn't find it again. Isn't there a place that sells a retrofit dipstick, and would it work for our transmissions?

Also, I've done 4 transmission services for my 10L80, and the way it was described in this thread, is exactly how to do it. It's an ultra pain in the rear.

Edit: this is the one I had found before, but it's for a 6L80/90.

JRE Dipstick and Tube Kit 6L80E & 6L90E

Jannetty Racing is proud to offer our in-house developed 6L80E/6L90E Dipstick Tube! No more crawling under your car to check your transmission fluid level. The factory fluid fill level is prone to allowing starvation during hard launches at higher power levels - this dipstick tube NOT ONLY...

jannettyracing.com

I guess I was off a bit b&m makes one for the 8l80e, does not specify any for the gm 10 spd, but the one for ford one says 10r80, maybe it can be made to work?
https://www.holley.com/search/?q=10L80E

 

[Doubeleive]

LOKAR says they have one but no fitment guide provided, a lot of there stuff is for retro fitting new stuff into older vehicles

DIPSTICK, HIGH TECH, TRANSMISSION, TRANS MOUNT, 10L80, BLACK

DIPSTICK, HIGH TECH, TRANSMISSION, TRANS MOUNT, 10L80, BLACK

lokar.com

 

[persistent]

I saw this somewhere before but couldn't find it again. Isn't there a place that sells a retrofit dipstick, and would it work for our transmissions?

Also, I've done 4 transmission services for my 10L80, and the way it was described in this thread, is exactly how to do it. It's an ultra pain in the rear.

Edit: this is the one I had found before, but it's for a 6L80/90.

JRE Dipstick and Tube Kit 6L80E & 6L90E

Jannetty Racing is proud to offer our in-house developed 6L80E/6L90E Dipstick Tube! No more crawling under your car to check your transmission fluid level. The factory fluid fill level is prone to allowing starvation during hard launches at higher power levels - this dipstick tube NOT ONLY...

jannettyracing.com

do you know the torque value for the case plug on the side of the transmission pan? i don't have the service manual for this transmission available.

 

[jaxscuby]

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwjLx8j7t-mLAxUCBzQIHVLRC4MQFnoECDoQAQ&url=https%3A%2F%2Fwww.gm-trucks.com%2Fforums%2Ftopic%2F223121-10l80-10-speed-fluid-change-check-service-manual-front-diff%2F&usg=AOvVaw32GcnROlRXMZwq1kxiao-z&opi=89978449

 

[dgjtools]

The 2018-2020 10L80 10 Speed transmissions (MF6) factory fill procedure does NOT use the plugs on the side of the transmission. All filling and level checking is done form the port on the bottom of the pan. The pan plug is removed and an adapter is installed to allow fluid to be pumped up into the pan. Once filled and up to temperature, the adapter is removed and any excess fluid drains out. Once it stops flowing, the level is correct and you reinstall the plug. There’s an internal tube (standpipe) at the pan fill port to assure the fluid is at the correct level. Thus, this is not a drain plug, it is a fill/level check plug.

i'm almost ready to test my dod delete work, and i need to refill my transmission fluid. i have 12 qts of dexron ulv on hand and another 5 qts ordered.

i had the radiator/cooler disconnected and drained the transmission fluid from the pan and replaced the filter. i had to undo the 8 mm hex fitting on the left side of the transmission pan to drain it.

i see comments that suggest there should be a fill/vent plug on the right side of the transmission pan, but i couldn't find it on the 10 speed transmission. additionally, i don't see a transmission dip stick in the engine compartment. i only have the service manual for the 6 speed transmission, so i can't find good manual info for the 10 speed.

can someone give me input on the fill process for this transmission? i would like to do a flush while i'm at it, but that seems pretty challenging to do without a dipstick tube for the filling.

i'm almost ready to test my dod delete work, and i need to refill my transmission fluid. i have 12 qts of dexron ulv on hand and another 5 qts ordered.

i had the radiator/cooler disconnected and drained the transmission fluid from the pan and replaced the filter. i had to undo the 8 mm hex fitting on the left side of the transmission pan to drain it.

i see comments that suggest there should be a fill/vent plug on the right side of the transmission pan, but i couldn't find it on the 10 speed transmission. additionally, i don't see a transmission dip stick in the engine compartment. i only have the service manual for the 6 speed transmission, so i can't find good manual info for the 10 speed.

can someone give me input on the fill process for this transmission? i would like to do a flush while i'm at it, but that seems pretty challenging to do without a dipstick tube for the filling.

The 2018-2020 10L80 10 Speed (SUV) transmissions (MF6) factory fill procedure does NOT use the plugs on the side of the transmission. All filling and level checking is done form the port on the bottom of the pan. The pan plug is removed and an adapter is installed to allow fluid to be pumped up into the pan. Once filled and up to temperature, the adapter is removed and any excess fluid drains out. Once it stops flowing, the level is correct and you reinstall the plug. There’s an internal tube (standpipe) at the pan fill port to assure the fluid is at the correct level. Thus, this is not a drain plug, it is a fill/level check plug.