RE the mis-wired hydraulic pressure switch, the recall changes only the wiring, so that the switch does not stay hot if it fails and shorts out. If the switch has failed, it needs to be replaced, and that will be the same Texas Instrument part that was used OEM.
Recall issue with the switch, specifically, was that any pressure switch can eventually fail as a short, and switch on hot side was different than switch on groung. Fix was a fuse in wiring harness to blow if the switch with high amps. TI never admitted to abnormal switch defects, it failed safely in 10x as many vehicles wired safely.
There are a lot of other elements in ECM managed cruise control, speed sensors and connection failures. You need to find a competent dealer. But replacing the pressure switch would not be a bad idea, whether it fixes cruise control or not.
