Hi everyone. I recently had the check engine light come on and when I scanned it, it gave me the P0449 code. I noticed that there hasn't been the usual tapping sound from the trunk after starting the car, so I replaced both the evap canister solenoid valve and the purge solenoid valve, but the code is still appearing. I finally checked the voltage at the evap canister vent solenoid and I was getting 2.8-2.9 volts while the car was running, which doens't seem normal. Any ideas or suggestions are greatly appreciated.
2007 Cobalt LS Ultra Silver Metallic 5-speed GMPP Catback Exhaust ZZP header and downpipe Supercharged 77.9mm pulley