How to dismantle quick connect fuel hoses in the tank?

Hello, is this what you're looking for, removing the Primary Pump from the secondary fuel pump module? There also looks to be a Fuel Pump Control Module for this vehicle, we don't have a 2.0L Turbo model listed here in All Data in the U.S. This is from a 2.4L non-Turbo, but does have the two-fuel pump setup, it looks like you need to squeeze the tabs together on both sides to disengage the primary fuel pump from the lower secondary, I would also inspect the secondary pumps pick up screen if there is one.

This is some additional information on these fuel pump modules, service info looks to be limited here.

Please, if possible give me the details concerning the hose fixed on the floater, for GMDAT Captiva c100 Korea.

Both fuel pumps in the tank are listed to have floats for the tank level gauge, the lower secondary pump is a transfer type pump, what kind of issue are you exactly dealing with? Can you take a picture and post it here please?