Question about 2004 Chevrolet Colorado

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Is there a sensor on the top of the tank on a 2004 Colorado or just the one on the char-co canister and the one under the alt ? thanks

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There is a pressure sensor on top of the tank , The sensor at the evap canister is not a sensor , it is a evap vent solenoid . The thing under the alternator is the purge soleniod . You would need to remove the fuel tank to replace the fuel pressure sensor . How to troubleshoot an EVAP Pressure Sensor problem P0452 GM

Posted on Apr 30, 2017


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Location of evap purge valve solenoid on a 2004 chevy Colorado z71 4x4 3.5l looking from the front of truck

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While it is not ideal, you can temporarily loosen the gas cap to where it is just sitting in the filler tube when driving until you can fix it. Then have your check engine light reset.

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