hurricanejake02 said:

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Because all the technology built into trucks today... IS the problem.

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Are you sure? Because it notified him he has bad fuel.

Check the MAP sensor. See what it looks like. I don't know that this is fuel related. I mean, it may be coincidental but I don't think it's your root cause. A cursory search online seems to show this to be a pretty common problem related to MAP, MAF, plugged vent in the fuel tank Someone said they loosened their fuel cap and the light went away. LOL.

I haven't tried the fuel cap thing yet, but I've seen it online. The MAF was cleaned the first time. I just hope it's not the injectors. Those are expensive. The truck runs fine and fuel mileage hasn't changed

*fingers crossed and knocking on wood*

Tried the fuel cap thing. Loosened it earlier this week and left it like that.

Went to HEB after golf this morning and when I came out and started the truck the CEL was gone.

West Side GMC wanted $5,800+ for a new set of injectors.

Hope it holds up

I have been buying diesel at Buccees in Denton and Fort Worth for years and have never had a fuel problem. Maybe the Duramax is more susceptible to it than the Fords. I also run a tank with fuel treatment in it every 5,000 miles. Keeps the injectors clean.

dahouse said:

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*fingers crossed and knocking on wood*

Tried the fuel cap thing. Loosened it earlier this week and left it like that.

Went to HEB after golf this morning and when I came out and started the truck the CEL was gone.

West Side GMC wanted $5,800+ for a new set of injectors.

Hope it holds up

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The first link I found showed the injectors are $1,500.

The dealer want's ~40-hours of labor to replace them?

I'd have to pull the quote if I still have it. I think it was $2,400 in parts and the rest labor