2004 gmc 6.0 intermittent no start
This 2004 gm van would sometiemes be a crank no start, and when it would not start it would misfire/ buck against the starter making awful noises, when I first tried to start this vehicle I thought for sure it had a major mechanical issue, but the next time i attempted to start it ran good and no noises.. this ignition switch had a 4-5 volt drop across the contacts for the ignition 1 circuit.