Do they repair or replace alternayors?

Yes. They do all car maintenance. But I would call them first and ask what the price would be. They're very helpful and honest. I used to go to a different place (also VERY good) but they were more expensive than AG. Alternators can be really expensive, so even thoufh these guys are more affordable than most, I would still ask around for prices from multiple places

I believe that do but would call first