So bought a 95 Tahoe LT the other day needs a head gasket and that's fine and dandy simple enough but got it home put it in the shop and come to find out theres no spark replaced the coil and ICM thinking maybe it would be that but no luck. Turns over fine and dandy. Did some tests can't remember exactly what at this point. But long story short no spark and no fuel spraying out The injectors turn the key and can hear the fule pump kick on took off the file line and its getting fuel....took a test light hooked it the the POSITIVE terminal and touched the purple wire coming off the ICM and sounds like the injectors are clicking but now I'm at a loss if it was a pressure issue I would think id have spark so any input at this point would be appreciated THANKS