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Re: 01 GMC Sannna 5.7 misfire codes
Posted to Technical Discussion Forum on 6/21/2005

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If you don't "feel" it there may not actually be a misfire present.

Use a graphing scan tool or lab scope to monitor B1S1 and B2S1 O2 sensors to determine if you actually have a misfire and if so wh... Login to read more.