by SDEconoTruck Thu Sep 02, 2010 10:55 pm
Are you talking about the 6.2 Duramax? Ohhh boy... ...you are either going to be pretty happy or most likely entering a world of pain.
Like Benwah says and more. Look for the "PMD mod" or "FSD mod" which is the controller for the high pressure injection pump. The genius designers placed the PMD (Pump Mounted Driver/Fuel Solenoid Driver) right on top of the engine!!! ha!
This is a delicate piece of electronics that controls the pump and it is very sensitive to heat. The Injector Pump is the heart of the diesel. Some kits will put a heatsink to it, others will relocate it. Look for that modification or history of problems with it. If the owner says, "I've never had a problem with it..." I'd be skeptical he's telling the truth.
You can do the mod yourself for a couple hundred, but I've seen guys pay over 2 grand chasing problems and ending up with the PMD mod as the final fix.
On the bright side, there are lots of support items for that diesel, like from Banks plus there are huge chat forums to try and keep these things going.
Parts are big money compared to gasoline engines, and diesel mechanics
can make a good living too...
I've got a Cummins diesel and couldn't be happier.
2 cents,
George