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Service Engine Soon light came on. Auto Zone diagnosis said: canister purge valve solenoid. I cannot locate it All the diagrams I find are for different Chevrolet models

Answers from the Automotive Experts

Brandy Schaffels, Editor at MagicHands, Inc. You can download a copy of the owners manual for your 2003 Chevrolet TrailBlazer EXT at this link: I also found a link to a discussion on his topic here: Hopefully, these will get you on the right track. For additional assistance, please find an MagicHands Certified Repair Shop at and they can help you diagnose and repair the problem.

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