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This question has probably been answered on here a hundred times over but I can't seem to find any search results that match exactly what I'm looking for.
My dad has 07 Classic with the LBZ Duramax. He absolutely loves the truck and plans on running it til the day he dies. With that being said, his biggest complaint is the fuel mileage he gets out of it. He averages 12-14MPG no matter how he drives it even when towing our boats/campers. He keeps sending me links to sketchy sites with tuners that are dirt cheap and claim to greatly improve fuel mileage. I'm smart enough to know not to go cheap when it comes to tuners/programmers. Can anyone provide any recommendations on somewhat affordable tuners that increase fuel mileage enough to warrant buying one in the first place? Or any other ideas to help squeeze some more MPGs out of it?
Any input is greatly appreciated!
By Harrison Bailey
I saw a similar post regarding the Opt7 Aura kit, which is what I’m installing, but none of those ports worked for me. I’m in a 2017 Sierra SLT Z71 and have the lights fully working besides the door open wire which needs to be connected to something that turns on when the doors are open or when the interior dome lights are turned on. Any suggestions would be great.
I’m not sure if this is true but it looked like some wire ports are in different locations between the 2017 and the 2014-2016 considering the posts I have seen for this install have been from non 2017’s and above.
Hello, I noticed on my 2004 Chevy Silverado 2500hd 6.0 the brake lights were out. Looking further into it it’s only while the headlights are on and the truck is running, all is working fine while truck is off. As soon as I start the truck the brake lights work until I turn on the headlights, then they fade off like they loose power. The turn signals work fine either way and they are on the same led. I’m confused, I can’t find anything wrong. Thanks in advance!
I have a 2020 GMC 2500 AT4 Duramax Diesel. Fuel economy is normally 18-20 mpg local and 21-25 mpg highway. I've noticed multiple times that if I completely fill the tank up, that my instantaneous fuel economy and average drop significantly. Instantaneously runs about 8-12 mpg and my average over the last 50 miles drops down to 11-13 mpg. Then suddenly after about 25-50 miles of driving, it will jump right back up to good fuel mileage. If I never completely fill the tank, this doesn't happen. Dealer says they've never heard of this, but I don't trust dealership feedback. Previously I had reported multiple times that DEF fluid levels were completely wrong and erratic and they said there were no reports about it. Then miraculously there was a software recall that fixed it.
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