I would appreciate any thoughts on this. 2012 Chevy silverado 3500 diesel, about 180,000 miles. It's had two episodes that are very similar, one a year ago and one recently. After running about 30 minutes pulling a trailer (moderate but not heavy load), stopped for about 20 minutes. Then it started up but immediately died and would crank but not start. The first time it happened I tried a few things and eventually pumped the pump on the fuel filter and it started up and ran fine. So when it happened again recently, I did the same thing. It started up but died a few times and finally started up and did fine. Both times the outside temperature was pretty warm, about 90F. In between these two episodes, no problems.
I took it to the dealer after the first episode and they couldn't find any problems. I'm going to take it in again, but it's running fine now so I'm worried they might not find anything again. BTW, no check engine light came on.
It reminds of my 65 mustang back in the day would get "vapor lock" every now and then when it was hot. I never really understood exactly what that was and have no idea if that's even possible with engines these days. Air in the fuel line? Need new fuel filter? Fuel pump?
I took it to the dealer after the first episode and they couldn't find any problems. I'm going to take it in again, but it's running fine now so I'm worried they might not find anything again. BTW, no check engine light came on.
It reminds of my 65 mustang back in the day would get "vapor lock" every now and then when it was hot. I never really understood exactly what that was and have no idea if that's even possible with engines these days. Air in the fuel line? Need new fuel filter? Fuel pump?