My truck- 2000 4.8
downloaded os- 2002 tahoe flex 12216125
Hi everyone. I wired up my gm flex fuel sensor today and downloaded the 2002 Tahoe flex fuel os. I wrote the Tahoe flex os to my computer and went in and changed all the parameters to match mine. I disabled VATS and got it to fire, and it does fire and run for a few seconds, but it goes dead lean and then dies. I can't run a log right now because the battery is dead from me trying to start it over and over, but I'll post my tunes. I can't figure out why it will fire and run for a few seconds then lean out until it's dead. Originally I thought it was the vats messing with the fuel pump but it runs longer than a couple seconds and I can hear the fuel pump running, plus it's disabled. I'm just missing something and I don't know what. Truck ran great when I rewrote my old tune back to it, then immediately rewrote the Tahoe flex tune and it leans out until it dies. Parameters are identical on both tunes. I don't get it.
park to drive enrichment, zeroed maf, stall saver, fans turned vats off.hpt
tahoe flex sd.hpt