Just completed an 800mi road trip - mostly at 70+ MPH with some slower stuff thrown in. Overall average was 23 MPG - revs were right around 1600 most of the time. I love both my DMax and the 36 Gal fuel tank.
Well in 2017 I traded my trusty 07 2500HD Gasser for a new DMax. The old truck towed my 6000 lb 24ft travel trailer all over the place with a reasonable amount of ease. I also traded my old TT in on a new 8000lb 31ft model. The truck and trailer swaps happened around the same time with the truck first so I never really got to tow the new tt with the old truck. As far as fuel economy goes the old truck was getting no more than 15mpg HY empty and 7-9 towing and about 10 around town. The new DMax delivers 12+ towing the new tt, 24hy empty, and 12-13 around town. The old truck was very happy when running in the 3500-4000RPM range which also made lots of noise in the cabin when climbing hills with the trailer. The new rig rarely goes over 2000RPM and is much quieter when climbing hills. After watching Gale Banks teardown a new L5P I was impressed at how well the new design was done - he says it is overdesigned by 20% including things like bearings. So far I have had 2 free oil changes - both part of the purchase package - dealer has oil changes for $99.95 which is cheaper than the quick lube places - the only difference is that I need to make an appointment. I have had to add a total of 7.5 gal of DEF (I am not sure the dealer topped it off when new or if the system is programmed to use more at first. Anyway I did not make it to my first oil change without having to add my first 5gals, then I added one more between them when the indicator was at 25% and I was going on a long trip. The truck is my daily driver but I make sure that it is driven enough to reach full op temp every morning. I plan on taking many more long trips with the trailer in the next few years after I retire. So far I love my DMax.
There could be some yet to be announced changes to the old 6.0L for 2020 and it is affecting the 2019 builds. For awhile in 17 the L5P DMax was on constraint due to production not being able to keep up with demand. There could be other items that are in short supply besides the engine.
2017HD replied to No F-bdy Bs's topic in 2015-2019 Chevy Silverado & GMC Sierra HDI had one of the first 6spds in 07. It was a solid transmission and towed my 6000 lb Arctic Fox around for 10 yrs before I traded it for my new DMax. I agree that 4th gear and 3000-4000 RPMs is a sweet spot for towing hills. As far as the tuning goes, I think GM programmed it to not downshift until the RPMs are down in the lower torque band - esp when these engines produce almost 90% of their torque by 2000RPMs.
If you are not towing or hauling - why go HD - there are way more choices in the 1/2T and the 5.3L gets better MPG. Also with the new 2019's coming out there will be good deals on the 18's left on the lot. OR you can opt for one of those new Trail Boss or the GMC version of it.
I have had the towing mirrors on my last two trucks - an 07 and 17 - the 17 is an LTZ with power fold which is nice in parking lots - they now have a feature where you hold down the lock button on the fob for an extra second and the mirrors auto fold in, do the same on the unlock button and they fold out. I tow larger travel trailers and really appreciate these great mirrors - have used the clip on mirror extensions - hated them - way too small and they wiggled too much.
2017HD replied to Zane's topic in The GarageMy truck sat in the lot at my home port for 3 wks before making its way to my dealer. It actually took GM intervention to get it to move - seems that they got on my dealer's case for not delivering 9 cars by the end of the month/quarter - all nine (including mine) were all stuck waiting for convey drivers to haul them out. GM allowed the dealer to go to the port and retrieve them. The day I picked up my truck there were three car carriers with cars sitting on the lot being unloaded.
The camera system adds cameras to the underside of the mirrors and depending on which package you get - a camera for the back of your trailer and/or a camera in the upper brake light on the cab. The camera in the brake light is only good for checking things in the bed and for hitching a gooseneck or 5th wheel camera. The camera you mount on the back of the trailer is good for acting like a rear view mirror when going down the road and when backing your trailer. All of this is a mote point if you are not planning on towing with this bad boy. Nitrogen for life - probably only good at the dealer - if you have a flat or other tire trouble on the road - forget it. Not sure what handle cups are. Dealers usually add equipment so they can jack up the price. The camera system is hard to uninstall the other stuff maybe less. I would only go for the loaded truck if you intend to trailer.
Have driven a Ford with it and it is not all what it is cracked up to be. While on a freeway I was in the passing lane and while overtaking another vehicle the rig I was driving all of a sudden slowed down as the sensors picked up the slower rig to my right. It also waited until the last minute and then it felt like it put on the brakes. Maybe the GM system is better than the Ford - but it was something I really could not get used to.
Also you really need to look very carefully at both companies config charts - they are very good at playing mix and match when it comes to payload and towing as they usually spec them on a bare bones trucks. GM is also not going to play a towing numbers game and ha - ve told the world that they are simply going for the majority marked and giving them the best towing experience they can. If you are wanting something different in your truck - wait for the 2019 models I know they will be more $$ but they will be a whole new truck.
The TBC in the truck is quite sensitive and it checks for resistance in the trailer brake lines - if it is too high it thinks the brakes are not connected and therefore the trailer. Which is why cleaning the contacts on both the truck and trailer helps. It could also mean that the wiring harness in your trailer is bad - or the brakes are bad.
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