GMT 800 & Older GM General Discussion 2006 & Older Trucks | General Discussion

Using a TCM-2650

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Old May 1, 2023 | 03:28 PM
  #161  
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I know you have a smart phone mfer
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Old May 1, 2023 | 03:31 PM
  #162  
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Originally Posted by arthursc2
Dude is local to me! Maybe I can do some networking
hell yeah!!! reach out!! I thought about just ordering it and hoping for the best.
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Old May 1, 2023 | 03:55 PM
  #163  
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I'll see what I can do! No phone number listed, have to do it via email like its 2002
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Old May 2, 2023 | 07:56 AM
  #164  
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{QUOTE=firebladeJJ;5521639]@Alanis001 how did you handle your Park/Neutral Safety box? Mine does not fit to the side of the 6l80. Run new wires or tap?[/QUOTE]


I actually took it off the 4l60 n left it plugged in and it just sits on top of the 6l80. I programmed the pcm to manual. I have not tried to unplug it and see if it will start with out it.
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Old May 2, 2023 | 07:58 AM
  #165  
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Originally Posted by firebladeJJ
looking at the diagnostics for the speed sensor on the 6l80, it looks like it generates a 8.3-9.3V signal and the one on the GMT800 for the speed signal is something like a 5V signal.

on my truck when i had the sensor unplugged at the T56, it would give a rear ABS DTC

I dont know if that helps any or what to do with that information but there it is.
I actually got my speedo to work now but the pcm does not see speed so got to mess with that.
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Old May 2, 2023 | 09:32 AM
  #166  
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Originally Posted by Alanis001
I actually got my speedo to work now but the pcm does not see speed so got to mess with that.
give us some info on how when you can, I'll collect all the data and create a post with all in one for easy viewing
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Old May 2, 2023 | 10:19 AM
  #167  
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Originally Posted by firebladeJJ
give us some info on how when you can, I'll collect all the data and create a post with all in one for easy viewing

so just spliced in the speed output wire on pin 41 of the 2650 module into the cluster speed wire and for me adjusted in the software ppm to 1000 and got the right speed showing. Only thing the abs n park brake light still on so going to try and splice that into the pcm speed to feed to the abs module.
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Old May 3, 2023 | 08:32 AM
  #168  
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If anyone has gotten the tutd switch to work please lmk how and what settings
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Old May 3, 2023 | 08:56 AM
  #169  
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Originally Posted by Alanis001
If anyone has gotten the tutd switch to work please lmk how and what settings
Once i get to the point where i can communicate with my 2650, I'll take a look at it too. I dont have the switch yet but its planned.

I'm going to my shop tonight to work on the truck, I havent been able to comm with my 2650, I think its my laptop, its too old or something, I've got power thru the harness but it wont find it.
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Old May 3, 2023 | 09:21 AM
  #170  
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What laptop do you have? Have you updated your drivers?
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