I have a 96 1500 short box standard cab 5.2 2wd auto/3.55 that I'm fixing up. Has about 160k on it. It has to crank a long time or several short bursts in order to get it running then it runs rough for 15-20 seconds then smooths out fine. I just got a new crank position sensor for it that I'm going to install hoping that cures the hard start. I was looking at the PCM and noticed a tag with software update that was done in september of 98.Is this the dreaded death flash that I've read about. If so is there any way to reverse this. It gets terrible gas millage at 12.5 average and I would think this thing should get at least 15 to 17. Any help on improving millage would be greatly appreciated.