tals21555

2001 gcl 4.7l it has set for a year . pulled engine and rebuilt it . The plug for starting system (up by radiator)was plugged into the hydraulic rad.plug. it start with key in on position .I double checked all other plugs to be sure they were in correct plugs. Now it starts up cold runs and accelerates fine for about 4 to 5 minutes then shut off, when you try to restart it starts and shuts off with in half a second .After a couple hours it will start and run for another 4 or 5 minutes I cleared codes and started again .It set code P0601 could the ecm be the culprit Thanks