nestor, ive done it on my 2019 1500 LT that came with auto down non flex gate, check your factory plug for gate on body side of plug, if has 9 wires it will go down like yours does but not the multiflex part. the multiflex gate has the same plug
no biggie, just have to take back panel off main gate and attach zip ties to actuators for center part and then drill small holes for them to protrude thru and thus it will come down once both are pulled. this option is well worth it.
U must have a multiflex gate off a 1500 to do on a 1500.. i purchased one off a later year LTZ and it went right on. i had to use bushings off my original gate, the cameras weren't the same so i used my original, little more work than many people may want to do but i am very capable of such things
Chevrolet dealers could do the programming but refuse, if a 19 GMC AT4 came with this option then surely a 19 cheby can be made to work as well, the BCM needs programming, but they not interested in the job, so they not getting my time or money, took them all day to make the correct lamp come on dash for factory added fogs