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Re: 1999 Tahoe 5.7 P0300 - #5 and #6 Dead
Posted to Technical Discussion Forum on 5/5/2012

If you have compression and spark then fuel would seem to be the issue. I'm sure the fuel is reaching the injectors so now you need to answer one question. Is the injector being commanded ON or is the injector just broke? As mentioned, pressure dropping the i... Login to read more.