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Gauge Additions to '23-'24 Dash

Kerry Pulaski

By Kerry Pulaski
in Modifications & Accessories

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Kerry Pulaski Enthusiast

Kerry Pulaski

Posted
Posted

'24 Gauges in my instrument cluster were a disappointment . A Bar Graph with a Min - Max ?? Really.... for a HD Duramax ??  I selected the max level display available and still not happy.

Aftermarket the two first ones I found to add, were Banks, that mount on the "A" pillar, ans a 3 x 5" flat one from ScanGauge.

I chose the latter as I did not want clutter on the "A" pillar. Pleased the ScanGauge mounts anywhere, and has an incredible amount of custom Data You can choose to display in real time and historical  data accumulated.

After reading issues with some Duramax Oil Pressure, Alt. 12v charging, I put these into the display for real time view.

Also DEF Tank Level, Boost PSI, Engine and Trans Temp..........

Also acts as a Diagnostic Tool to read Fault Codes.  Simple install plug in to Diag. Port.

SCAN GAUGE III ON '24 GMC.jpg

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Kerry Pulaski
Kerry Pulaski

'24 Gauges in my instrument cluster were a disappointment . A Bar Graph with a Min - Max ?? Really.... for a HD Duramax ??  I selected the max level display available and still not happy. Afterma

64BAwagon
64BAwagon

I did notice on mine it also had TCC slip%. I selected it to see what it shows but the roads are too sloppy and my truck is clean 😎

64BAwagon
64BAwagon

This is what I settled on for now on Pg1 and Pg2  subject to change Note the "GEAR" on bottom left of page 1.  Thanks to @Gregg Staples for that info. 

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Pryme Senior Enthusiast

Pryme

Posted
Posted
1 hour ago, Kerry Pulaski said:

'24 Gauges in my instrument cluster were a disappointment . A Bar Graph with a Min - Max ?? Really.... for a HD Duramax ??  I selected the max level display available and still not happy.

Aftermarket the two first ones I found to add, were Banks, that mount on the "A" pillar, ans a 3 x 5" flat one from ScanGauge.

I chose the latter as I did not want clutter on the "A" pillar. Pleased the ScanGauge mounts anywhere, and has an incredible amount of custom Data You can choose to display in real time and historical  data accumulated.

After reading issues with some Duramax Oil Pressure, Alt. 12v charging, I put these into the display for real time view.

Also DEF Tank Level, Boost PSI, Engine and Trans Temp..........

Also acts as a Diagnostic Tool to read Fault Codes.  Simple install plug in to Diag. Port.

SCAN GAUGE III ON '24 GMC.jpg

I have the same gauge and have posted about it a few times. I mounted mine in the bottom left corner of the window it’s so much easier to see there. I’d consider putting it there if I were you. 

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Kerry Pulaski Enthusiast

Kerry Pulaski

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Posted
8 hours ago, Pryme said:

I have the same gauge and have posted about it a few times. I mounted mine in the bottom left corner of the window it’s so much easier to see there. I’d consider putting it there if I were you. 

Thanks for the tip.

Pryme Senior Enthusiast

Pryme

Posted
Posted
3 minutes ago, Kerry Pulaski said:

Thanks for the tip.

No problem. The wire routes very easily and cleanly up under the weather stripping in along the back of the dash. The only place you will see it is a few inches up along the A pillar under the grab handle. But it makes it so simple to see. I wedged mine basically between the Apillar and the rounded section that rises up surrounding the gauges on the dash. 

64BAwagon Senior Enthusiast

64BAwagon

Posted
Posted

Can anyone with the Scangauge 3 confirm that the display will show what gear the trans is in ?   I am interested in having it for towing. I have learned that locking out some overdrive gears will keep the trans from picking on terrain that changes a lot. My 2021 would occasionally go into 6th gear while on a downgrade. It typically ran in 4th or 5th but 6th was unsustainable while towing a 12k fifth wheel. I really want to know what gear is the sweet spot for my 10 spd and then set that as the max gear on my shift selector. 

Pryme Senior Enthusiast

Pryme

Posted
Posted
11 hours ago, 64BAwagon said:

Can anyone with the Scangauge 3 confirm that the display will show what gear the trans is in ?   I am interested in having it for towing. I have learned that locking out some overdrive gears will keep the trans from picking on terrain that changes a lot. My 2021 would occasionally go into 6th gear while on a downgrade. It typically ran in 4th or 5th but 6th was unsustainable while towing a 12k fifth wheel. I really want to know what gear is the sweet spot for my 10 spd and then set that as the max gear on my shift selector. 

It has the ability on certain vehicles but this truck isn’t one of them unfortunately. Unless the 24 does I am not sure. It can only display what is there to read. 

64BAwagon Senior Enthusiast

64BAwagon

Posted
Posted

Hopefully the 10 spd will have it. If not I will probably lock out 9 and 10 and then see how it reacts when towing. I should know for sure soon since I plan to order the SG3 next week. 

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Kerry Pulaski Enthusiast

Kerry Pulaski

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My '24 HD Duramax with ScanGauge III, does not seem to respond to the trans gear. I have it selected in a watch window. Will keep working on it. There are over a hundred sensors to choose, and some custom ones to download. I will contact the mfg. to ask on this Gm Allison.

However, I think it's Awesome otherwise !!  Digital Real Time volts, Engine & trans temp, boot psi, torque, glow plug active, air inlet temp to intake.....AND DEF LEVEL !!

My only complaint is the Cat-5 network cable goes into the center lower rear. Had to bend up an aluminum bracket I made,  to allow some offset. Going to get a 90 deg. adapter from L-Com Inc. near Boston, to compact it better.

Manual attached. Will add my mounting pic next.

ScanGauge-3_User_Manual_1.2.pdf

Kerry Pulaski Enthusiast

Kerry Pulaski

Posted
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Posted

It has three pages of 9 monitors to customize. Can see the 1-2-3 page selection under the engine torque display.

Pryme Senior Enthusiast

Pryme

Posted
Posted
1 hour ago, Kerry Pulaski said:

It has three pages of 9 monitors to customize. Can see the 1-2-3 page selection under the engine torque display.

Don’t forget the ability to change between an infinite number of color combinations. I went with white and red because it matches my old school analog gauges best

Kerry Pulaski Enthusiast

Kerry Pulaski

Posted
  • Author
Posted

Thanks Pryme.

64BAwagon posted if the SG-III can display current Allison gear. I got a reply back from the mfg. yesterday that they will look into it. I looked at every std. & the X codes available in my device, and on their website, and only found the "Recommended Gear" choice, that stays at displaying "Neutral" and never changes.

Other Allison in motion choices are Input RPM (from the crank) and Output RPM to the driveshaft. These DO function.

That digital code info must be available somewhere in the ECM or other control module, to control the shift points.

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Gregg Staples Enthusiast

Gregg Staples

Posted
Posted

I did not see this when I started another under the gas truck forum, scan gauge 3. The codes from scan gauge are there  for the gear indicator for the 10 speed.

  • Like 1
64BAwagon Senior Enthusiast

64BAwagon

Posted
Posted (edited)

I did notice on mine it also had TCC slip%. I selected it to see what it shows but the roads are too sloppy and my truck is clean 😎

20231203_130823.jpg

Edited by 64BAwagon
  • Like 2
Pryme Senior Enthusiast

Pryme

Posted
Posted
6 hours ago, 64BAwagon said:

I did notice on mine it also had TCC slip%. I selected it to see what it shows but the roads are too sloppy and my truck is clean 😎

20231203_130823.jpg

Glad to see you finally got it. If you notice it bouncing a bit over bumps(these trucks are lumber wagons after all at heart) you might find yourself lowing it down. I put a piece of soft Velcro on the bottom right corner and put the scangauge so that bottom corner is wedged in there nicely so it doesn’t bounce at all. 
what gauges are you running on the other two screens? I can’t remember if I saw that tcc% I wonder if it’s only on the 10spd? I use all the others y on show. 
it has two different cat temps are you only showing one? They are always the same and change 1deg apart at times but basically the same. 

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