2009 Tahoe OBD Inspection Fail

[winmag45]

I will certainly do that,that thanks.

 

[Rocket Man]

The evap monitor takes forever to get ready after it’s been reset which I’m pretty sure your range device did. I’ve heard of this before with those devices. I had the evap monitor issue on my 08 Silverado and after a month I just registered it in a different county with no emissions testing. The stupid drive cycle instructions were ridiculous. It wasn’t my daily or else I could have got it to ready itself. Goodluck.

 

[George B]

I think you may be right.I am down to 1 code after I drove back and forth to work.Just the evap.Thanks so much for all of your help.This forum is the best.Thanks to all.

Check your state laws you may pass with one monitor not set. In Wisconsin you can have one not completed. It will usually be the EVAP. You need a good steady drive around 60 mph for 15-30 minutes to get it to set that one.

 

[Hobert]

Illinois allow you to pass with one monitor not ready and check engine light off. I passed with the evap monitor not ready, all others were good.