Chevy and GMC Duramax Diesel Forum - View Single Post - Calling out all who had problems with DEF/Emissions
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post #8 of (permalink) Old 07-04-2013, 05:47 PM
Junior Member
Join Date: Apr 2013
Location: Minneapolis, MN
Posts: 113
Bought a CPO 2012 LML in April.

- drove 210 miles and got poor DEF quality
- dealer "reset" computer and DEF quality message back in 3 miles
- dealer replaced NOC sensor and still problem
- replaced the tank sensor and still problem
- flushed the tank and still problem
- dealer kept truck for 10 days, GM flew out tech from Detroit and repaired all kinds of stuff with a bill of $7,700+ all under warranty
- drove the truck 38 miles and poor DEF quality was back on
- returned to dealer and cancelled the deal
- talked to them 2 weeks later and shop manager said they still hadn't figured it out

I'll admit the dealer was great and reputation for diesel mechanic capability in Minneapolis is top-notch. They took me out of the truck and got a killer deal on a 2013 which has 2800 miles on it with no problems/issues yet but admit I'm somewhat worried - hoping I had my string of bad luck with this issue as I love the new GMC!

2013 Sierra SLT 2500hd, metallic indigo/lt titanium
Cognito Stage 6 UCA, Fox Mono-tube shocks
Pitman and Idler braces, Monroe SA1998 Stabilizer
Sulastic Shackles, BMF 20x9 REPR, DURATRAC 285/60
Advent OGM1 NAV/DVD, C'S-GM1 Rear Camera
NCT Large Fender Mod, 2" T-Bar Leveled
RBP Rx-3 Nerf Bars
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