2016 silverado/sierra duramax next Gen ??

The DEF tank was an issue for me when I looked at them. It wasn't the only reason I didn't buy a GM, but it definitely went in the con column.

While on the subject of DEF, Ford and GM both ought to add a DEF tank gauge too. It's nice to have a good idea of what you've got in there instead of just waiting for the idiot light to come on, which may not be at the most opportune moment.

It is interesting. Mine says OK until it gets to around 25% and then it gives you percentages and miles until empty. I would also like to see it give percentages the entire range from 100% to 0%. At 25% I still had 800 or so miles until I was out of DEF.

Is there any truth to the rumor that GM and Ford have been working on a HD 10-Speed trans? I expected the new 2017 Ford Superduty to have the 10 speed but it won't. Its the same 6 speed they already have.

DEF is 32% ammonia and water.

MARK VANDERBENT wrote:
Have been noticing more photos of 2500 duramax trucks and the hoods seem to be camouflaged with more venting. Could this be from a next Gen duramax ??

2017 is what I've been reading for a release model year.

IdaD wrote:
The DEF tank was an issue for me when I looked at them. It wasn't the only reason I didn't buy a GM, but it definitely went in the con column.

While on the subject of DEF, Ford and GM both ought to add a DEF tank gauge too. It's nice to have a good idea of what you've got in there instead of just waiting for the idiot light to come on, which may not be at the most opportune moment.

Once you get to 30% remaining on the GM the guage gives you a remaining DEF reading. above that it just says "DEF OK". And it give a remainin mileage at times as well. 30% is about 800 miles.

yes, a reading of 100% to 0% would be nicer, but the 30% give me more than enough time to refill.

moving the DEF fill from under the hood would be nice as well.

For the 2-3 times a year to refill I have no issue with the DEF fill under the hood.

GM could have put it next to the fuel fill but then would be dealing with a similar scenario that some Powerstroke owners have dealt with putting DEF in their fuel tank. Dope! Yes, you can stop stupid...

As far as the DEF tank location I can see concern with those that do heavy offroading which is a pretty small number for HD owners. As far as aesthetics once you throw on a set of side steps is pretty tough to notice. If you crawl up under one of these trucks you will see there really aren't options for relocating the tank once GM decided to go to the larger 36gal fuel tank on the short bed trucks. I will happily take the larger fuel tank over moving the DEF tank back inside the frame rails if it means going back to a little ol 26gal fuel tank.

N-Trouble wrote:
For the 2-3 times a year to refill I have no issue with the DEF fill under the hood.

GM could have put it next to the fuel fill but then would be dealing with a similar scenario that some Powerstroke owners have dealt with putting DEF in their fuel tank. Dope! Yes, you can stop stupid...

As far as the DEF tank location I can see concern with those that do heavy offroading which is a pretty small number for HD owners. As far as aesthetics once you throw on a set of side steps is pretty tough to notice. If you crawl up under one of these trucks you will see there really aren't options for relocating the tank once GM decided to go to the larger 36gal fuel tank on the short bed trucks. I will happily take the larger fuel tank over moving the DEF tank back inside the frame rails if it means going back to a little ol 26gal fuel tank.

Yes, that 36 gallon tank is a HUGE improvement over the previous 26 gallon tank.

I think when GM went to that larger fuel tank, Titan fuel tanks cried a river.

IdaD wrote:
The DEF tank was an issue for me when I looked at them. It wasn't the only reason I didn't buy a GM, but it definitely went in the con column.

While on the subject of DEF, Ford and GM both ought to add a DEF tank gauge too. It's nice to have a good idea of what you've got in there instead of just waiting for the idiot light to come on, which may not be at the most opportune moment.

Not really a big deal... I change the oil and fill DEF tank. I don't recall how the GM DEF level feedback works, but the Ford system starts warning the driver with 800 miles left. That's more than enough warning to locate some DEF and fill the tank.

My Ram goes 10,000 miles between oil changes. I use it to haul my camper and a trailer. It goes through a tank of DEF about every 3,000 miles or so. Having a continuous level gauge is very nice. Having easy access to the DEF port is very nice too.