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Blazer Forum - Chevy Blazer Forums (https://blazerforum.com/forum/)

- General Tech Help (https://blazerforum.com/forum/general-tech-help-7/)

- - Poor Gas Mileage (https://blazerforum.com/forum/general-tech-help-7/poor-gas-mileage-6561/)

swartlkk

11-13-2006 10:56 PM

RE: Poor Gas Mileage

A GM scanner is not necessary, nor is having your own scanner. Autozone, Advanced, etc will read your codes for free.

A scanner (not necessarily a GM one) is necessary to diagnose O2 sensors however.

rooster

11-14-2006 01:53 AM

RE: Poor Gas Mileage

thats cool i had no idea that autozone and advanced read them for free, kyle only problem is there aren't many on long island. what about pepboys, autobarn do they.

actually i just found an autozone near by thanx

samurai_24

11-14-2006 04:59 PM

RE: Poor Gas Mileage

Will there be a code still if my check engine light isn't on?

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