2011 duramax no start
#11
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Well that would make it an LML with the controversial CP4 pump. Thay have a higher failure rate then the CP3 but not that bad. Thay fail quickly with any contamination such as gas in the fuel.
Ether he was abusing it or he got a lemon. In any case, it does not mean the duramax is is junk or a bad engine. Far from it
Ether he was abusing it or he got a lemon. In any case, it does not mean the duramax is is junk or a bad engine. Far from it
#12
Well that would make it an LML with the controversial CP4 pump. Thay have a higher failure rate then the CP3 but not that bad. Thay fail quickly with any contamination such as gas in the fuel.
Ether he was abusing it or he got a lemon. In any case, it does not mean the duramax is is junk or a bad engine. Far from it
Ether he was abusing it or he got a lemon. In any case, it does not mean the duramax is is junk or a bad engine. Far from it
#13
2011-2015 have cp4 pump that are bad about coming apart and putting metal in the lines, fuel rail, and injectors. Have a 2012 in gm shop now waiting for a change out of all that is a complete package, under warranty. Truck has 88297 miles warranty for drive train goes to 100000 miles and end of next year. Gm service just needs the last 8 of vin. and mileage to look up if under warranty. out of warranty parts are 4500.00 and over 30 hours labor.
#14
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!
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!
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