Sorry about your truck RW. This story probably wont help but, here goes...
About 5 years ago, my neighbor (real good guy) had saved up and bought a used duramax/ally silverado. He got it with about 20k on it. It was a really nice truck. His step-dad (not so good guy in my opinion) was helping him change the oil and fuel filter.
By this time, I had owned 3 dmax's and the neighbor had asked me tons of questions about them so I was hanging around BS'ing. The step-dad got a bright idea and said "instead of pumping the heck out of this thing (refering to the primer on the fuel filter), I'm gonna start it on either and it will prime itself". To which I said "these engines have glow plugs, they don't play nice with either. I'm not doing anything, I'll prime it for you..."
Is everyone familiar with the type of person that thinks they are always right and when they get real loud they are even more right?? That was the step-dad. At that point, I said it was time for me to go and I left.
A few days later, I saw the truck go past the house on a tilt bed...
Neighbor told me it had a busted engine and couldn't afford to get it fixed so he ended up trading it in broken, on an older truck.
Made me sick. I wished I would of just pumped it. It was a really nice truck...
sorry for my ramblings...