Trans Service-How much fluid?

[alvocado]

I'm planning 100k service on my 2011 Yukon including changing the transmission filter and fluid, drain only - no flush. For those that have done this on a 6L80 trans, how much fluid will be required? I know it's not the full capacity since some will remain in the unit and cooler lines.

[O_J_Simpson]

Measure what you take out. Put it back in.

[txab]

Amsoil.com will list all the capacities for your vehicle. It's a good resource

[swathdiver]

6 Quarts of Dexron VI when you drop the pan.

[bgbdwlf2500]

mine was right about 6 quarts also