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Evap Code P0449
I had the same issue on an 09 Tahoe. I replaced the gas cap and on-engine solenoid because they were quick and easy, no help. Turned out to be the charcoal canister and tubing by the gas tank. When I pulled the old one out, the tubing disintegrated. New tubing is not rubber and may hold up...- rn1948
- Post #12
- Forum: Engine & Drivetrain
