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International Automotive Technicians Network
Re: 86 Blazer 2.8 code 44 & 45 assistance req'd
Posted to Technical Discussion Forum on 9/1/2003

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First lets stop right here. Have you checked TSB's for updated software that essentially turns off the systems ability to the monitor O2 sensor during an extended idle? That car uses a non-heated O2 s... Login to read more.