When i put my trucks key in the on postion it starts up and the starter stays engaged it already burnt up one starter. I checked relays none were bad and i replaced the ignition switch, it was fine for a bout 5 minutes then it did it again. any help would be great. the truck is a 2002 rcsb 5.3

 

Did you change the ingnition switch or the lock cylinder? I forget which one it is, but one of those has the return "spring" that kicks back the switch from start to run. It is sticks, it will keep sending power to the starter, even if the engine is running. There are slide contacts inside the switch that jump power to the starter, while jumping power to the engine to fire up. Good luck!

 

Even If The Cylinder Kicks Back... . Sometimes The Electric Part Of The Switch May Stick In The "start" Position... Take Off The Cylinder.... Make Sure Battery Is Disconnected.... And Turn The Switch.... See It If Catches And Sticks.....


Are You Buying Good Oe Starters.... Or Aftermarket??

 

thats the thing i dont even have to try and start it it will just start. i have a wire diagram from gm dealerworld. it looks like to possibiltys p/n switch or short to voltage. thats what a service tech told my brother at his dealership. so tommarow i shall check and see id i have power were iam not supposed to. i didnt know if this was comin or not.