Originally Posted by brokensmokin
bought a 2011 duramax last week and I'm having some problems. the truck won't start unless i give her a shot of either. i know i know don't use either! but once i give her a shot of it she starts right up and runs great but if i shut it off she won't start back up. I've replaced the injection pump with a brand new one from gm and still the same problem.i look and my scanner and it isn't building the pressure that the computer is commanding but as soon as i give her a shot of either she starts and has no problem holding the pressure commanded.
I've talked to a few people and they say that she needs injectors.
iv checked for code and i don't have any except for a glow plug. now before i did the injection pump i had a low rail pressure code but i don't seem to have it after i replaced the pump.
any ideas??? any and all help would be appreciated!
My brother bought one brand new and went through 4 rails! 4 of them under warranty in 6 months and finally traded it off knowing gm wouldn't fix it
Don't know if there is an aftermarket rail that doesn't suck but if there is even its not your problem start saving for one. It ran awesome and got good milage but the factory rails and factory replacements are the worst rails ever made period. End of discussion .