Anyone out there have the late model GM pickup with the LML Duramax? How do you like it? Had any issues or problems? I picked up a 2011 GMC Sierra w/ the Denali package last weekend. Thus far it's getting 21+ mpg on the highway/ 16.6 mpg around town. I plan to leave it stock, as it sits it's plenty of truck for me. I stepped up from a 2000 Ford F-250 7.3 supercab 4x4 to this, it's hard to believe the differences in the two vehicles (NIGHT & DAY). I'm looking forward to a road trip soon, and possibly dragging the GN around later in the year. My wife is crazy about the truck, I guess I need to hide the keys.
Duramax LML
- Thread starter bad V6
- Start date
We have an 11 that just went over 100,000 miles. Not one single issue with it. 99% of those miles are pulling a 24 open trailer. Sucks having to fill up with DEF, the filler is in a stupid place and fills so slow. That is the only complaint I have with the truck.
hungerbuhler1
Active Member
- Joined
- Dec 20, 2009
I have a 2011 and it has 67k miles not once had an issue either. Urea is in a bad spot like stated above.
Diesel trucks respond very very good with emission deletes and a good tune. I do them to all my trucks, family and friends. Warranty or not. It saves the truck and really wakes them up. Each truck varies but you'll gain 3-4 MPG and 100-200 RWHP (real world results). I own a diesel performance company so if you have any questions or need anything hit me up.
forcefed3.8's
Buckeye Bullet
- Joined
- May 26, 2002
I have a 2011 with a full delete. Still the same fuel mileage but I was driving 5 miles at a time to work. Driving more now, but on winter fuel. Still 17ish city. My biggest problem was the regens. I worked 5 miles from home, so the truck would never complete a regen, I would have to go drive on the highway to finish. I did a full delete after the first regen. Only have 7200 miles on it now, but no problems.
Are you calculating the mileage yourself or basing this on the trucks information center?
- Joined
- Feb 18, 2006
The dpf (diesel particle filter) is whats eating the fuel on the newer diesel trucks. They send fuel into the exhaust to burn off the soot. They say less emissions but burning more fuel = bad for environment (period). It's a catch 22 but since it generates more money its OK.
forcefed3.8's
Buckeye Bullet
- Joined
- May 26, 2002
The DPF gets burned off in regen mode, which burns more fuel. I have never heard of the DEF cleaning the DPF. My truck has neither.
forcefed3.8's
Buckeye Bullet
- Joined
- May 26, 2002
hungerbuhler1
Active Member
- Joined
- Dec 20, 2009
Just did delete today on my 2011. Does not run the way I expected. Feels slower and less power. Stock exhaust went out at 81,000 miles ( a bunch of sensors they think. After $250 I pulled it from Gm cause they wanted more money to keep testing ) Did 4" exhaust, cold air and H&S tuner with unlock code and tune by some guy Kory? Truck has quite a bit of lag around 50-70mph and smokes at all speeds even if you give it barely any gas.
) Did 4" exhaust, cold air and H&S tuner with unlock code and tune by some guy Kory? Truck has quite a bit of lag around 50-70mph and smokes at all speeds even if you give it barely any gas.Similar threads
