ECM

Asked by mostro Dec 09, 2019 at 05:48 PM about the 2008 Chevrolet Suburban 1500 LT 4WD

Question type: General

I have 2008 Chevrolet suburban ecm keeps
erasing itself and never get ready for smog change
ecm keeps doing the anything help

1 Answer
157,615

James answered 4 years ago

You need to keep the gas gauge between three quarters and one quarter full for all the diagnostics to run to set the readiness monitors. Keep in mind you will pass inspection with one readiness monitor not set. Don't disconnect the battery either. If the check engine light is coming on you need to fix that issue first! Hope that helps! Jim

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