soxfan81
5/25/2007 5:12:32 PM
I have an 03 tahoe and the check engine light is coming on and the code is PO449 and it is a fuel evaporative code. The gas cap is tight and other than that I have not found any useful info on the web I will greatly appreciate any help. Thanks in advance
RonH
5/25/2007 6:10:05 PM
If you are searching on the web with PO (the letter "O") 449, like you entered it here, that will explain the lack of information. Try it with a zero P0449, and you should get better results.
I think the P0449 refers to a malfunction of the Canister Vent soleniod.
ZX1100F1
5/25/2007 6:31:48 PM
Look the wire harness to the EVAP canister vent solenoid over for damaged insulation and also inspect for a poor connection at the harness connector.
If all looks good then a likely a faulty selonoid, replace the EVAP canister vent solenoid.
If this doesn't fix the problem then a possible bad Powertrain Control Module.
