Ive BEEN to different 3 dealers. All for those same issues and NONE of the dealers have fixed it...Try a different dealership. 1st dealership I took my car to didn't fix anything. Not even the alignment, when they claim they did. Steering was still offcentered and pulled to the right. 2nd dealership was great. Worked on my car for almost 4 weeks 3 different visits to properly diagnose and resolved both the squeak and alignment issue.
The next closest dealer is 45 min away with no way to get home and thats going after the 2 that are 30 miles away and the "local one" 15 miles away.
Im so done with dealer games GM has said my car is a lemon...