Today my 99 Tahoe 5.7 150K miles starts fine after 2 minutes it starts to shut off and back on then runs smooth and then cuts out again. It almost seems like the engine stops all the dash light go on then kicks in again. I all so notice the tach moves all over the place (0-1200 rpms). Fuel psi 62 checked the MAF, Coil, ICM and new Distributor 2 months ago. Looking for ideas here this one is a head scratcher and it all started as I was driving home.