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2007 Chevy Silverado check engine light code p0446 changed…

Customer Question
2007 Chevy Silverado check engine...
2007 Chevy Silverado check engine light code p0446 changed the solenoid months ago got it cleared 2 days ago drove over 70 miles still failed inspection what is my vast action to do now
Submitted: 2 years ago.Category: Chevy
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Answered in 7 minutes by:
2/26/2016
Chevy Mechanic: Ron Z., - Chevy Tech - replied 2 years ago
Ron Z.
Ron Z., - Chevy Tech -
Category: Chevy
Satisfied Customers: 20,070
Experience: 18+yrs experience. State Inspector and Chevy Diagnostics
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The Check Engine Light has not come back on since the solenoid replacement, correct?

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Customer reply replied 2 years ago
Correct
Customer reply replied 2 years ago
Since I had the code cleared
2 days ago
Chevy Mechanic: Ron Z., - Chevy Tech - replied 2 years ago

Ok, great. So the correct repair should have been made if it hasn't returned by now. Getting the Readiness Monitors can be tricky. GM has provided a "Drive Cycle" procedure that should help set the Monitors more quickly and efficiently. Try to stay as close as possible to all the times, rpms and speeds listed in the procedure for best and quickest results. The EVAP Monitor will be the hardest to set. This "CAN" require the drive cycle to be performed more than once. So keep that in mind. Once you have done the drive cycle, you can have the Monitors checked for Free (except in California) at most local big-chain parts stores like AutoZone before heading back to the Inspection station. For easier viewing/printing, I've wrapped the Drive Cycle into a PDF file. Download the file here: https://www.dropbox.com/s/z0dd819xjbipznd/chev-drive.pdf?dl=0

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