Engine cranks, won't start. - help

[creed69]

2004 GTO LS1, Auto - Hybrid install.

Local shop removed emissions, VATS, etc. Had engine running a couple of weeks. Purchased EFI Live, changed fan on/off temps - worked great. Tried to start engine 3-4 days later - cranks, but won't start?? I have 58 psi at the rails, power to the coils, injectors, cam and crank sensors. The scan tool shows 100-200rpm while cranking. Double checked that the anti-theft is off.

Although I have power to coils/injectors, I have no spark and the injectors aren't pulsing. I checked the plugs by holding them to the frame and put an LED into the injector connectors - nothing.

New to tuning software.. anything to look for in the software to help diagnose the problem? Unfortunately, I cleared all the DTCs without looking at each one.

[Baldric]

does it try to start ? or not at all ?

[creed69]

Not at all.

[Baldric]

have you tried another pcm in the car to see if it will start ?? possible dead coils ??

[joecar]

Also, check:
- fuses blown,
- ground connections for voltage drop.

[Baldric]

Also, check:
- fuses blown,
- ground connections for voltage drop.

esp check the relay/fuse for your coils