1998 GMC Yukon V8 Four Wheel Drive Automatic 87400 miles
I disconnected the battery to install a nutral safety switch sucessfully. Than I removed the instrument cluster to troubleshoot an inop tach. Unsucessfully. When I drove the car the speedo was eratic so I removed the cluster to check my work but when I reinstalled the negative battery cable I had left the ign switch in the on position. The car started and drove but the security light was on steady but not blinking. I turned it off and restarted it the security light was out. The following morning I tried to start it and it just won't run for longer than a couple of secs. I looked on line about the whole passlock sys problems and think there might be a connection. These are the facts The security light goes off after turning the key to the run position after a few secs. Then it will come back on if I leave the ign switch on for a few minutes longer.I have tried the ten minute routine to reset the passlock sys in an attempt to get it to start. With no luck. I linked my OBD2 code reader to the car and I get an error message stating LINK ERROR unable to link.I know the code reader works because it works on my other car and it worked on the yukon just the day before when I cleared a knock sensor code. I poured some fuel down the throttle body and it ran longer than when I don't.I feel that the computer is shutting down the fuel delivery.I am a fairly competant home mechanic with a pretty good set of tools. I need help in troubleshooting this one
have the same problem?
Sunday, August 9th, 2009 AT 12:59 PM