You might just have a bad ignition switch. This is very common! Check the fuses inside the vehicle to see if they all have battery voltage. If any of them have low voltage, the ignition switch might just be at fault.
Checked all fuses and they all have 12 volts. Starts and Stalls unplugged the MAF sensor and the vehicle runs fine plug it back in and the vehicle stalls. We have installed two standard ignition MAF and a GM MAF and vehicle still stalls. Any other ideas?
The tech is gone do we have to hook a vacuum gage to it, if so we will have to do it tomorrow when he comes in.
I've heard mention of it but nothing more. So are you confident in Just replacing the PCM by itself, or will there be further diagnostics needed to confirm this?