Did not pass smog OBD faield secondary air system on my 20011500 truck chevy they said computer has not rest how many miles do i need to drive before it resets they said it would pass. Once the computer reset it was serviced

Asked by Aug 22, 2015 at 11:27 PM about the 2001 Chevrolet Silverado 1500

Question type: Maintenance & Repair

Did not pass smog OBD faield secondary air system on my 2001 1500 truck chevy they
said computer has not rest how many miles do i need to drive before it resets they said it
would pass. Once the computer reset it was serviced and did not drive can you give me
advice.

2 Answers

78,095

You need to keep your gas tank between 1/4 and 3/4 full. No more and no less. Then simply drive normally for about 1 week. The readiness monitors should be set by then. Since your Silverado is an '01 model it will pass, under Federal Law, with 1, but only 1, readiness monitor not set. Doesn't matter which one isn't set. As long as all the others are set, you'll pass. HTH. -Jim

1 people found this helpful.

you only allow to have one monitor not set on 2000 and up car, EVP only, so if you have secondary air pump monitor will not pass.... if you have 1999 or lower model you can have one monitor not set and it can be any monitor...

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