Ron Ananian, The Car Doctor, takes calls from listeners with car issues.

1. Caller: Bill from Maine (2019 Chevy Equinox)

   • Issue: Smelling combustion-like odors inside the car, particularly at stoplights. A state inspection noted oil wetness at the engine’s underside, but no visible leak was found. The dealer could not diagnose the issue.
   • Ron’s Advice: The smell could come from an oil or exhaust leak, possibly from the turbocharger. Bill should not rely on state inspections as a diagnostic tool. Instead, a mechanic should check for leaks thoroughly, use an engine oil dye to identify potential oil leaks, and inspect the exhaust system for small leaks.

2. Caller: George from Tennessee (2008 Chevy Colorado)

   • Issue: The truck intermittently fails to crank, but all dash lights stay on. After multiple attempts, it eventually starts. The issue has persisted for years.
   • Ron’s Advice: The problem could be due to bad engine ground connections (G100–G106), a failing starter, or a corroded body control module (BCM) connection. George should have a mechanic inspect these grounds, check for error codes, and ensure all wiring is in good condition.

Throughout the show, Ron emphasizes proper diagnostics over assumptions, highlighting the importance of thorough inspections beyond state safety tests.

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