Iridium Denali

2 - times when I came to a stop it went dead. 1- time it went dead with lane departure showing. Every time when I crank it back up the voltage goes way up for a minute. Power steering hanging up when turning. 3- times a very load bump noise coming from the passenger side dash or under hood. The moon roof will not open sometimes but clicks. Then when it does open it wont close. When these problems happen it works after a while. All these problems have taken place within the month. My truck has 66,000 miles on it.

2015 GMC Sierra Denali 1500 Crew Cab 5.3L 325 CID ( ECO TECH ) . I change my own oil and filter at 40% regardless of mileage. That was the advise of a GM Mechanic. He said with the Eco Tech LT1 platform he has seen a lot of oil pumps go out when the oil is ran to 10,000 miles .