it is throwing a coil pack d code but when i move d coils to a position and clear the code it comes back the same. last time this happened it was a pcm

second the radio is going off at random and when that happens the windows do not work

third the security light is coming on and preventing me from starting the car


any ideas on any of this i really don't have the money to take it to the dealer to get checked out


99 z28 m6

 

The first two problems sound like wiring issues. Get the diagrams and trace the wires.

The security light no start issue sounds like the pass key system is failing. You can pull apart the steering colum and repair the actual ckt or go to the other side of the car and setup an inline resistor(s) to the bcm with a switch to ground.