I have a 1999 Blazer with the 4.3L V6 Vortec.
The next day after coming home in a really cold morning(if that matters) the engine will not start. We've checked or replaced the plugs, distributer timing, plugs get spark and fuel pump but wont start. We also checked things like the fuel pressure and checked the wires they seem fine, any ideas?

Were also currently checking the cam/crank timing/chain because we were told that maybe "the timing jumped", sounds absurd to me but were checking it.


I was told by some it might be the ECM, but is there a way to test it?


Any help would be appreciated.

 

What was the fuel pressure?

Do you notice anything odd happening on the instrument cluster? Does the security light come on?

 

I don't remember the fuel pressure but I was about what the shop manual said it should be.

Nothing odd on the dash, but the check engine light it on.