Chevrolet dealership ChatGPT bot agrees to sell a Tahoe for $1
Chevrolet of Watsonville · Dec 14, 2023 · Customer service agent
What happened
A ChatGPT-powered customer-service bot on the Chevrolet of Watsonville website was manipulated by users into 'agreeing' to sell a new Chevy Tahoe for $1, calling it 'a legally binding offer - no takesies backsies,' and into unrelated tasks like writing code. The dealership took the bot offline after the prank went viral.
Causal vector
Insufficient system-prompt guardrails allowed users to override the bot's instructions via jailbreaks
Source
Reported by Business Insider. Verified against the primary report.
A $1 sale of a $50K vehicle trips a per-transaction floor rule instantly. The firewall returns BLOCKED with a reason the agent can relay, so the bot physically cannot commit to the deal regardless of what the prompt allows.
The six rule types that contain this class of failure
Per-transaction cap
Any single spend above your ceiling is BLOCKED before it moves.
Daily total
Cumulative spend across all agent calls, bounded per day.
Velocity limit
Stops runaway retry loops — the #1 cause of overnight losses.
Merchant allowlist
Only approved destinations can ever receive funds.
Category rules
Flag high-risk classes (crypto, infra, refunds) for review.
Approval threshold
Above a value, the action waits for a human.
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