The drainage of my Hummer was recently stocked with dirts and the water came in at the sun roof making the internal lights and the audio system grounded. Each time I drive, the internal lights are no longer turning off making it difficult to drive at night. Also my sound system is no longer working as it only produce beat sounds from the speaker. Can anyone suggest what to do about it aside from bringing it to the shop for repair?

 

If I have a vehicle with water intrusion, I place a fan inside the vehicle for a day or two and leave the windows down and let the fan blow air throughout the vehicle and dry everything out real good before I start any kind of troubleshooting.