Ok, you will need a 1/4 ratchet 5.5mm short socket, and a 7mm deep.
From the passenger floor disconnect the three 7mm bolts that hold the blower/HVAC cover to the HVAC unit. They stick straight up, one is over the trans tunnel and is a PIA.
The actuator has a pair of 5.5mm bolts and that it falls straight down, it is also keyed to the shaft.
That unit only covers the driver side, the passenger side is on the top, under the dash cover.........and it has to come off to access it.
If both sides are hot and it is wanting to stay on defrost is is the main blend actuator. It is next too the steering column, god have mercy on anyone that tries to change it.