Again: they can't be prosecuted for sharing, for monitoring, or for receipt of information. This is statutory language and the words matter.

If there's an authority under which Chrysler can be prosecuted for having vulnerabilities (spoiler: I don't believe there is), CISA doesn't change any of that. Certainly, there's no clear linkage between CISA sharing and a private actor's ability to sue Chrysler for torts emerging from vulnerabilities.

I don't even think there's a stretch reading of the statute that gets you where this blog post lands.