scan gauge 3

rjgvt · May 30

14 hours ago, UWSkier said:

One thing I wish the 2024s have that my 2016 had is "fuel consumed." The ScanGauges of the past could also track this so presumably this new one can. I'd rather know how many more gallons I have in my tank than a somewhat arbitrary E------F bar graph...

@UWSkier

I use the MyGMC app to see the percentage of gas tank is left. Also shows the mileage left like the dash shows. For those that run there tanks down to the low fuel light, more power to you, I never do it. I fill up before I get to 1/4 tank.

64BAwagon · May 30

I very rarely run mine to the low fuel light but when youre only getting 9MPG towing and your station choices are limited by the 36 ft box youre towing, sometimes it happens. My vehicles at home rarely get below half tank.

UWSkier · May 30

14 hours ago, BCGM said:

UW Skier

I may not be understanding . but I think you can find that information on your truck dash ? How much fuel you have left in percentage and how many miles left to empty . I can see that on My Chevrolet phone app

My 2016 had a 26 gallon tank. When I'd fill up, I'd reset the "consumed" counter and know exactly how many gallons I had left in the tank at any given time. More accurate than a percentage. In the 2016, my fuel range would flip to "LOW" when I still had 4 gallons in the tank. It was very handy with that small tank and towing the camper. Not quite as important with the larger 36 gallon tank, but would still love to know it.

64BAwagon · May 30

I loved the old 1/2 and 3/4 tons with the dual tanks. something like 18 gal each side with a switch on the dash to go between them. Funny how they could do this 45+ yrs ago but not now.

Pryme · May 30

1 hour ago, 64BAwagon said:

I loved the old 1/2 and 3/4 tons with the dual tanks. something like 18 gal each side with a switch on the dash to go between them. Funny how they could do this 45+ yrs ago but not now.

They can but they can’t due to safety regulations. Easier to make one tank safe vs two.

Pryme · May 30

6 hours ago, UWSkier said:

My 2016 had a 26 gallon tank. When I'd fill up, I'd reset the "consumed" counter and know exactly how many gallons I had left in the tank at any given time. More accurate than a percentage. In the 2016, my fuel range would flip to "LOW" when I still had 4 gallons in the tank. It was very handy with that small tank and towing the camper. Not quite as important with the larger 36 gallon tank, but would still love to know it.

Percentage is much more accurate.

it goes down by 1%. So there are 100 units of measurement. How many with the gallons to empty?

UWSkier · May 30

17 minutes ago, Pryme said:

Percentage is much more accurate.

it goes down by 1%. So there are 100 units of measurement. How many with the gallons to empty?

tenths of gallons, so 260 on a 26 gallon tank.

Pryme · May 30

17 minutes ago, UWSkier said:

tenths of gallons, so 260 on a 26 gallon tank.

Fine you win lol

BCGM · May 30

Hold on what about us up north we have litres ? LOL !

BCGM · May 30

1 hour ago, Pryme said:

They can but they can’t due to safety regulations. Easier to make one tank safe vs two.

I bought a new Chevrolet 3/4 ton 4x4 in 1975 .it had dual tanks with the switch on the dash to switch tanks . It was wired wrong from the factory if I remember correctly and it was showing lots of fuel but it was reading the wrong tank .There were problems with new trucks then as well . First night I parked it and noticed a big oil stain on the driveway ,it ended up that the transfer case was porous . Sorry about the thread derail !

Edited May 30 by BCGM

64BAwagon · May 31

14 hours ago, Pryme said:

They can but they can’t due to safety regulations. Easier to make one tank safe vs two.

All this safety stuff is taking the nuance out of driving a truck. We arent all soyboys wearing skinny jeans, what happened to being dangerous

BTW. They could make 2 tank trucks because the chassis cabs have them, they just chose not to, likely for cost reasons.

Edited May 31 by 64BAwagon

KARNUT · May 31

7 minutes ago, 64BAwagon said:

All this safety stuff is taking the nuance out of driving a truck. We arent all soyboys wearing skinny jeans, what happened to being dangerous

BTW. They could make 2 tank trucks because the chassis cabs have them, they just chose not to, likely for cost reasons.

I had a tank in the bed with a manual switch like the old days. Getting 4 miles per gallon pulling my equipment it was a must. I had it in the return line on my original fuel tank. I would simply fill up the original on the fly. The nannies and engine cylinder deactivation will keep me 06 or older on GM trucks. One benefit of being retired. The last 5 years of my working life I spent mostly going to my office. I got to drive old trucks. During that time I had a 98 2 door Tahoe, 98 Ford a 64 elcamino, a 65 GMC retro ride and a 92 lowered highly modified Chevy truck I ended up keeping 12 years. Just before retirement I bought a new GMC. We didn’t get along. Went back to the 92 and later my avalanche. I do searches almost daily there’s plenty of well cared for old stuff out there. Nothing like driving the older stuff to know what driving is all about. I’m a driver.

jake111 · November 2

I just bought a new Scangauge II. Since I have a 2024 2500HD WT, there is a very inconvenient twist knob you have to reach around the steering wheel to switch between various displays. I want to see a few more items, but mostly transmission temp and transmission gear. Actual coolant temp and actual voltage, too. Thanks to Gregg Staples, the transmission gear works fine.

I can't seem to get transmission temp to work. The Scangauge support site says for TFT:

TXD: 07E2221940(01)

RXF: 046205190640

RXD: 3008

MTH: 00090005FFD8

I tried with and without the 01 on the end. I also tried the "all" code (4th digit 0 in TXD). Does anybody know the correct code? I checked my inputs quite a few times. I even tried the non-Allison codes.

Of course, now it's Friday night and I won't have a chance to contact Scangauge support until late next week. So I'll try y'all! Thanks!

jake111 · November 7

Update: I contacted Scangauge support. They are awesome!! Very quick to respond and they know what they're doing!!

1) They noted that Chevy has recently switched from using the CANSF protocol to CANLF on some vehicles. The support website only shows the CANSF values. Mine is CANLF, which you can see from pressing the red button (Scangauge II), then More, More and noting the Mode value.

2) If you have CANLF, then the codes for transmission fluid temp are:

TXD: 33F1227004

RXF: C46205703604

RXD: 3008

MTH: 00090005FFD8

NAM: TFT

The values in Post #5 look like they are probably for CANLF since the gear selection worked for me.