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Re: 99 Tahoe 5.7L misfires and stumbles when hot
Posted to Technical Discussion Forum on 1/18/2007

Misfire counters show missing on all cylinders. A few months ago i noted that it was missing more often on the cylinders toward the front and rear of the block, ei 7,8 and 1,2.

Vehicle ran the same with cats bypassed.

I'll try adding fuel while its running... Login to read more.