Hey there hive mind, I have a crank no start condition with my 2003 Silverado. It cranks and I get a single spark fire then nothing, just cranking when the double tap system lets the starter engage again. Had a hard MAP sensor code, correct voltages at the 3 pin, so I replaced the MAP. No more code but still the crank no start persists. Fuel Pressure is at 50psi solid during crank. I did have a ground issue on the chassis mount under driver's side rocker. I removed the bolts, ground away corrosion and scrubbed the eyelets clean then reinstalled with dielectric grease and repained the area. It ran fine for some time the started stumbling. I parked it and the next day the crank no start situation started happening. There was an aftermarket alarm installed and I thought that may have been the issue, so I ripped it out and made sure all tapped wires were taped and secured. Crank no start persists. Any of you fellas have any suggestions as to where I should look next?? Much appreciated.
Phil
Phil
