Radio/tape Cd Player problems of the 2008 Buick Enclave

2008 Buick Enclave without accidents nor sunroof or windshield repair or replacement has been experiencing water leakage from visor joints, side curtain panels and under the steering column. My radio amplifier suffered water damage and 2" of water has pooled afoot of my vehicle floor. The issue has been present as of March 2018 and has returned for repair every two months since to date and is there again today. This issue is not able to be rectified nor solved. I have researched and found flooding and water accumulation issues are a known, common and repetitive issue with this make model and year. This will result in electrical and more significant power, and operation problems. A repair, fix compensation and deep cleaning is necessary.

While driving engine turned off on 4 separate occasions in the past 2 weeks. Never any warning lights or check engine light just engine turns off suddenly. The first time I was driving on a busy city road middle lane at 25-45 m/hr. No power steering or brakes. Unable to restart I was able to push into a parking lot and call for help, it was towed to my mechanic who said rollover switch tripped. 2 days later engine turned off again while exiting highway at the same speed but was able to restart in neural after a min stopped, I drove it straight to my mechanic who reset computer and drove it around for 3 days unable to diagnose problem on computer. 2 days later while driving 45 m/hr engine turned off again. I was on a small decline 2 lane busy road and able to restart in neutral position. A few times in the past few weeks vehicle would not start after parked for a few hours but would start in neural eventually after many attempts, 12/24/2016 while driving on a busy 2 lane street in town engine stopped again no power steering or brakes at 20 m/hr. Unable to restart and passengers had to get out of my Buick and push into nearest parking lot. Unable to restart, towed on 12/26/2016 to local Buick dealership to be diagnosed by a certified dealership per the suggestion of Buick USA. They can not find a problem per computer diagnosis and are trying to tell me there is some water damage behind dash on fuse block that will cost me thousands of dollars to repair but no guarantee that that is the problem I have never had any problems with lights, radio , ac or any other electrical issues that would lead me to believe that the fuse block has water damage. . Per gm forums there are many issues with ignition switches or ignition control module . Could this be the problem . My engine turning off while driving is a real safety concern and how do I resolve this problem.

Water leaking into the vehicle whenever it rains. This happens whenever the vehicle is not in motion. I have reached out to the dealership for repairs several times but has not solved the problem. It is affecting the electrical functionality in my vehicle. Dash lights, radio functionality etc.

My family was driving home from a summer vacation and while on the highway suddenly heard a loud almost gun shot sound. We were surrounded by tons of huge 18 wheelers so we assumed something from one of the trucks hit us. As we kept driving, we kept hearing noises so we pulled over and looked around the whole car but didn't find anything, until the passenger looked up and saw that the sun roof was shattered. Luckily the inside of our sunroom has tiny, so it was kind of staying together. Since we were on the road, far from home my dad found some clear tape and taped both sides of the roof, so that the glass wouldn't fall on them during the drive. Luckily it did not rain, or our trip would have been completely ruined. We still have issues with the roof to this day, even though it was replaced when we got home. It leaks.

In 2014 our Enclave began having a popping noise in the audio system. All sounds, radio, dvd, turn signals, warning chimes, stopped working. After the vehicle sat for a time the audio would work again. It happened several times with the last time occurring may 5, 2015. On may 5, 2015 the audio started making a loud, ear piercing popping noise which almost caused the driver to lose control of the vehicle. My two young children were also in the vehicle right next to the rear speakers. The only way to stop the noise was to pull the vehicle to the side of a busy highway, turn the vehicle off and open the driver door. (to turn the power to the radio off) the audio has not returned this time. This is happening to most 2008 Enclaves at around 70-75k miles. Buick refuses to assist as usual. Without the audio system working, all warning chimes are silent. Check engine, seat belt, tire pressure, airbag, rear park assist. This is a huge safety issue!.