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International Automotive Technicians Network
Re: 2012 Impala Will Not Run O2 Or Evap
Posted to Emissions Forum on 5/21/2018

Her in MA, we can have any one monitor Not Ready on the initial test. 99% of the time it is the evap. monitor. In my position now, I never have the vehicle cold overnight and the 17 hour cold soak criteria for the evap monitor is impossible for me. I have been... Login to read more.