2005 6.0
was running fine and then a evap and misfire cylinder 7 code. While driving engine sputtered a little like it was running out of gas then shut off 1/4 mile down the road. It did crank and try to start maybe 6 times then only crank

currently cranks but won’t start

I changed crank sensor
I can smell fuel and has a full tank
new wires

any ideas?
I have to pull codes again to see if any new ones and need to verify spark

other strange things are
Dim headlights
Fast flash only on the driver side that comes and go's
poor performance


grounds were very bad cleaned them and found that if I grounded to coil harness the truck would start and run. I also changed the plugs. Glad I did the plugs had a buildup on the electrode. Misfire seems to be gone. Still chasing the abs/wheel speed light.

 

Verify the spark is something for that needs to be done.

You can even see if it will it run on brake cleaner.

 

no spark
checking codes later today

 

Check crank sensor again maybe try installing a known good one not just a new one I had a wonky one out of the box from GM.

 

I'm seeing videos of bad grounds could be causing this. Any thoughts on that?

Showing a ground for the pcm at the back of the intake on the passenger side and also grounding the coil harness on the drivers side.

 

Yes check grounds! I had all sorts of issue because of a ground and I swore they were all good. Check them then check them again.

 

Did you check the Fuel pressure? I believe spec is 58-62 PSI

If you have say only 35 PSI it will give poor performance and if it drops below that may not run at all.

 

It won't run with no spark, either.

 

So it started..

I installed a new ground wire to the driver side coil pack and it fired up right away. Not sure how I lost that ground but it did. I still have a few codes
p0300 random misfire
c0035 wheel speed sensor front new
c0040 wheel speed sensor front new
c0055 wheel speed sensor rear original

The search continues

 

Do you still have the dim headlights issue? If so check the harness to radiator support ground (driver side front of support). This is the ground for everything mounted to the core support including the headlights.