My 2002 GMC Envoy wont start. I have had it on the battery charger for almost an hour. When I turn the key I get interior lights and headlights and the dash board lights up to. But nothing from the engine not even a click like the starter is bad..I tried the put it in neutral and start it then back to park that didn't work. and No my security light is not flashing. any more suggestions???

Try car to car boost-battery charger may not be working correctly or set on low amp charge -interior lights and dash may all light but battery may not be strong enough to energize starter have battery tested if battery good than check for power to the starter if power-- starter may be shot can remove also and have tested at most auto stores free if no power battery -wiring-or connection issue would need to test fuse panel-ignition switch and starter solenoid