1996 GMC Suburban will not start.

2nd try.

• Fuel pressure is good.
• Test lamp show VCM is commanding injectors to open.

So your thought is the common side of the injectors are not powered. I believe this is the correct schematic for a '97 suburban.
There is the ECM1 fuse but hard to believe that fuse is blown, check it anyway.

The engine could have jumped time, or you could have moisture inside the distributor cap.

Hi and welcome to FixYa!

Have you replaced the distributor coil pack? If the coil pack is burnt or worn out there will be no spark to the plugs which may result to a no start issue. I strongly suggest that you have it replaced.

Hope this helps and thank you for using FixYa! Have a good one!

Fuel pressure regulator would be my guess.

The 305 code means a cylinder misfire. You could have a bad valve or a cracked cylinder head (worst case). Rent a compression tester from any auto parts store that does the tool loan program and test your compression. If ALL your cylinders are within 20% of each other, then I would check your injector pressure. I hope its something simple and cheap to repair.

auto choke device defective

Have these things checked for #1:
Spark plug
plug wire
#1 fuel injector
and the throttle position sensor, also have a fuel pressure test done, especially for the hesitation.

It is probably head gaskets - These need to be replaced.

check the catalytic converter i had the same problem with my suburban and mine was a clogged converter.

what is the fuel pressure under a load? try disconnecting the MAF sensor if the fuel press is ok, if the MAF is bad the engine will run better.