I was at the dealer a few days ago for some work and asked about vacuum pump failures. The service manager thought about it and said they had seen a few on Silverados but none on an Equinox yet. They are one of a chain of six Chevrolet dealers in this area and do a lot of work.
I asked for a proactive quote to replace the vacuum pump (2.0L engine on a 2020) and was quoted $977 plus tax.
My battery is also five years old and auto start/stop is no longer working so I asked for a quote on it, $370 with a 42 month warranty. I said Autozone has the battery with a 36-month warranty for $260 and asked if they could do better on the price. They offered to drop the price to $330 so I declined.
My kid did the same thing at a Hyundai dealer and they matched the Autozone price for a battery, but not this place.