Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Use a voltmeter or test light to check for voltage at this fuse with the key on. If you have voltage at this fuse, test for voltage on the pink wire at the transmission connector.
If you have no voltage at this fuse, the problem is a bad ignition switch.
The ignition switch has several sets of contacts and several circuits that feed off the switch. According to the diagrams, you have pink and brown wires, as well as a white wire. This white wire only feeds the trans fuse. This is in no way connected to the ignition circuits for the coil or ecm.So this is most likely going to be a bad ignition switch. I have included the power distribution schematics for you below.