The agent could not access onstar.com directly (all fetches returned 403 Forbidden) and assembled its answer entirely from web search results and third-party sources. The site is not agent-navigable; the response is partial because the agent could not verify core claims against official OnStar documentation and found conflicting pricing data with no authoritative reconciliation.

• ›onstar.com returns HTTP 403 to all fetch attempts (/, /basics, /plans, bare domain), blocking direct machine access entirely. The agent had no choice but to fall back to web search and third-party summaries.
• ›Search results included URLs to onstar.com subpages (/basics, /support/faq/chevrolet, /features/entertainment/in-vehicle-wi-fi-hotspot) but these were not fetchable, so the agent could only read search snippets, not the actual content.
• ›Pricing data conflicts across multiple 2025–2026 sources: Safety & Security listed at both $22.99 and $29.99/month; Super Cruise at both $39.99 and $64.99/month; older tier names (Preferred, Premium, Basic) no longer appear in current official-looking results, suggesting a recent plan restructuring that the agent could not verify.
• ›The agent had to rely on model memory and general domain knowledge to describe OnStar's purpose (built-in GM telematics, emergency response, navigation, remote access) and how it compares to alternatives, since no search result explicitly contrasted OnStar with competitors.
• ›Critical information gaps: free trial length, cancellation policy, eligibility by vehicle year and region, and the current official tier lineup are all absent from both the fetched search results and the inaccessible official pages.