I have a 2001 2500 HD duramax that has been having fuel problems. They have told me that the problem is that the injectors are bad and need replaced. We are not sure that is the problem though. The motor does not run any different than normal when at an idle or when starting. It does not sound like it misses at all. There is no fuel in the oil and the fuel mileage a has not changed. The only time it acts up is when the motor is under a load such as pulling a trailer or when getting on the gas, the check engine light comes on and it loses all power. The injectors are a $4800 dollar fix and I'm not sure thats what is wrong with it. Any ideas to the problem would be helpful. If anymore information is needed to understand the problem let me know. Thanks you.