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International Automotive Technicians Network
Re: Scan tool tests = monitors passed?
Posted to Technical Discussion Forum on 9/7/2013

On GM, you can run the EVAP monitor to completion on most vehicles by running the service bay test with the scan tool. You can also run the catalyst monitor in the bay. The info to do that is usually found under testing for a P0420

As stated above, you can r... Login to read more.