Using the truck for about 5 to 6 months with the (wrong replacement fuel pump) the not starting issue became more prevalent.
Also during this time, the truck would periodically die while going down the road.
About 2 weeks ago the truck just failed to start all together.
Checked fuel pump pressure. Fuel pump was faulty, not delivering enough pressure.
Went back to Napa (different store this time). They spent over 2 hours trying to find the right pump. Success!
Yesterday I swapped in the brand new (correct pump) and still a no start condition.
What I know at this point, when the key gets turned to the 'ON' position the pump does not run (most
of the time).
If the pump does run the truck will start instantly. But this is a very low percentage of the time.
So the issue is something electrical that is not allowing the fuel pump to run.
Today I bypassed the mechanism in the above post - picture. With that being jumpered I'm assuming that will not be an issue that can contribute to this problem.
Unless there's some other interlock device that I don't know of the only thing left is the fuel pump relay. I suppose I can go get another one just for grins. I don't like throwing money at a problem but it's only about $15.
I've already spent over $700 on fuel pumps in the last 6 or so months.
I know Jack about Chevy's. What else is in line to make a fuel pump not run on this thing?