engine 03 chevy 2500hd 4x4 6.0l engine problem

[sefiroxx]

Put car in neutral or park. Use a piece of large guage short wire and jump the starter solenoid from the primary wire. If it cranks, then back trace starter circuit (relay, nss, security, etc). If it doesn't crank, verify 12v in primary at starter and if present, replace starter.