1) Get it into an independent garage for a second opinion.
2) You didn't say how bad the leak was, but mechanics often use the work "leak" when we would say "seep" or "slight sheen from wetness caused by one drop per month leakage". Where is the leak that bothered you and how many drops a day did you get out of it?
3) If you can change your oil, you can change the serpentine belt for $30.
4) If you can do brakes, you can do the wheel bearing. Is it making noise?
5) You can do the stabilizer bar end links, too. Are they clunking, or loose enough to notice yourself?
6) He must have three kids in dental school at the same time to quote $4000.
We can't help you prioritize the issues without knowing what you do about severity. Brakes are a safety item. The serpentine belt is trivial to change. Everything else needs to be prioritized by the amount of leakage or noise they make. Data we don't have. And all can be addressed by an independent mechanic who knows GM. No need to go to the over-priced dealer for simple things like this.
2) You didn't say how bad the leak was, but mechanics often use the work "leak" when we would say "seep" or "slight sheen from wetness caused by one drop per month leakage". Where is the leak that bothered you and how many drops a day did you get out of it?
3) If you can change your oil, you can change the serpentine belt for $30.
4) If you can do brakes, you can do the wheel bearing. Is it making noise?
5) You can do the stabilizer bar end links, too. Are they clunking, or loose enough to notice yourself?
6) He must have three kids in dental school at the same time to quote $4000.
We can't help you prioritize the issues without knowing what you do about severity. Brakes are a safety item. The serpentine belt is trivial to change. Everything else needs to be prioritized by the amount of leakage or noise they make. Data we don't have. And all can be addressed by an independent mechanic who knows GM. No need to go to the over-priced dealer for simple things like this.