Pressure control solenoid stuck off

[Dazz06VESS]

https://forums.justcommodores.com.a...ol-solenoid-fault-auto-ss.262834/post-3290987

 

[Dazz06VESS]

Hi everyone hope ur all having a good day. I have a problem with my 2006 VE SS transmission the engine light came on I got RACV out they diagnosed the problem as PRESSURE CONTROL SOLENOID 4 PERFORMANCE OR STUCK OFF does anybody know if a good clean and a service will fix this or do they have to replace the solenoids?