This blazer has been an adventure. New bcm new pcm new knock sensor twice (cuz the dealer forgot to take the chip from the old pcm to the new pcm). Took a week for the computer to set so i could take it for emissions just for it to fail cuz of the p0446 code. I changed the evap solenoid on the engine still getting the code. Is the canister and the the vent located in the same places as the 4 dr blazers?

 

P0446 is a malfunction in the EVAP vent valve solenoid circuit. Possibly the solenoid valve is faulty, but not necessarily. The solenoid valve is located on the frame crossmember just forward of the fuel tank on 2 door models. The pink wire at the solenoid should have battery voltage when the ignition is in the RUN position. The PCM supplies ground to operate the solenoid. If you have a bi-directional scan tool you can command the PCM to operate the solenoid to check it. If not, the valve is under $20, (cheaper than taking it to a shop). If it still doesn't work, make an appointment

 

Thanks Ill look into it this weekend.