Factory integrated brake controller not recognizing trailer.

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dkad260

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Just getting ready to start..just got back home.

Going to go over all the steps first. According to GM TDS tech, I needed a 24 hr subscription to tis to use the Tech 2 as a pass through....apparently the TDS doesn't recognize the handheld Tech 2 right now?? Weird.
 

swathdiver

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Just getting ready to start..just got back home.

Going to go over all the steps first. According to GM TDS tech, I needed a 24 hr subscription to tis to use the Tech 2 as a pass through....apparently the TDS doesn't recognize the handheld Tech 2 right now?? Weird.
@Joseph Garcia

I think Joe said to click past that to the next page and then you can pick it. Haven't done it this way yet myself.
 
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dkad260

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I'm at this screen, when I select "Service Programming System" in the Tech 2, I can only go up to 2007.

Screenshot_20220804-171818_Gallery.jpg


Screenshot_20220804-171833_Gallery.jpg
I can select the Tech 2, but get this message on both re-program, and replace and re-program.

Screenshot_20220804-171846_Gallery.jpg
 
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dkad260

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Thanks @swathdiver good info.

No progress yet, going to get on a call again this AM and see what we can do.

This has definitely been a frustrating endeavor.
 
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dkad260

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My generic USB to serial is one issue, going to get a Tripp Lite cable and then we are dealing with a possible Win 11 issue but need the different cable first.
 

Joseph Garcia

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It seems that the only current fully successful approach is to get on the phone with their support Techs and have them issue a 24 hour license back to the original TDS program and help walk you through the process to complete the programming/reprogramming.
 
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dkad260

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It seems that the only current fully successful approach is to get on the phone with their support Techs and have them issue a 24 hour license back to the original TDS program and help walk you through the process to complete the programming/reprogramming.
Yes, that's what I had done this AM. They were very helpful and I did a screen share with the agent and she discovered my USB to serial adapter was not compatible.

Once this process has (hopefully) been resolved, I will surely source a MDI or something for future programming.
 
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dkad260

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Update...

I picked up the Tripp Lite USB to serial adapter, and the tis recognized the Yukon.

I successfully re-installed the current software to the FPCM, but unfortunately the Yukon still does not recognize the trailer.

Not sure what else to check.
 
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dkad260

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As I'm progressing through this dillema, trying to diagnose the integrated system, I keep getting this...

Screenshot_20220809-175911_Gallery.jpg

At the same time I have this...

Screenshot_20220809-175927_Gallery.jpg

If there's a fault, would there be a code set?
 

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