I have an 03, 3400 Impala. First started having issues with it not wanting to start, symptoms appeared to lean towards passlock/ignition switch problems and occurred about once a week. So, I tried using a different key. Drove the car for like a month. Parked it, go to start it again and no start. Tried starting the car again like 10 hours later, still nothing (in the past it would start when given time).

When I turn the key I can hear the fuel pump kick on and it makes a single click noise up front (like maybe the starter). The battery is not dead, I have enough juice to roll down the windows, however I have NO power getting to the radio at all. .

I also have another issue with the power door locks blowing fuses. And the occasional random dash lights going on/off.

From what I have read, symptoms like this are associated with the bcm. Would you agree on this? Is there any way that I can test this before I pull one out of a car at a jy? And also, if I do get a bcm from the jy, will there be any issues with the computer reading my ignition keys?

Please give your thoughts...

 

The starter not engaging is not a Passlock issue. It sounds like the crank relay is being energized with the key in start. You can verify this by listening/feeling for it in the underhood fuse block while someone else turns the key. This relay supplies battery voltage to the starter solenoid. Remove that cable (thinner of the three cables) from the starter and then check for the voltage on the cable end, again while someone else turns the key. If it checks out, check the battery terminals and battery cables, both ends.

If the crank relay is not switching in the battery voltage to the starter solenoid, check the relay itself and then BLU fusible link. It's possible that the starter solenoid shorted out and blew the fuse.