Question about 2001 Chevrolet S-10
After clearing all im monitor codes and driving hundreds of miles doing numerous gm driving cycles the secondary air and evap monitors read not ready . i know the air pump works ;there are no blown fuses , i have vacuum from the solenoid valve and the relay is good .all other im monitors read ready or n.a.if i unplug the pcm will this have the same effect as rebooting a computter?
No this will not. Computer has a keep alive . Evap and a.i.r. run on different schedules then other monitors.Usually EVAP is gas tank related.Have some smoke system to see if there are any leaks. In NY you can pass with monitor not running for that year truck
Posted on Feb 08, 2010
Testimonial: "thank you for your reply it was helpful to know the pmc has to be kept alive."
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Posted on Jan 02, 2017
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