Ive been working on modding a 2013 CTS V steering wheel to work with a 2013 Escalade and ran into some mechanical bumps with shaft and connector sizes, but hit what might be the ultimate dead end. After extensively digging through control schmatics I found that each button on the wheel produces a specific resistance value which is then read by the BCM to carry out that function. Attached are schemtatics from both steering wheels with each resistor labeled with their respective values in series between each button. So if my theorys true even if you managed to swap the connectors and wires in the correct order the buttons wont function as they should until that resistance is met...Chime in if you think otherwise, but I think this ones a bust unless your willing to do some extensive work to meet each unique resistance value. This also appears to be true for the manual shift buttons on the gear selector.... so much for having paddle shifters on the Escalade
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Although there still might be some hope for steering wheel shift controls using 25901034 off the 2009 H2 Hummer. At 35$ I’m willing to take the gamble to give it a try, it might be plug and play…to be continued…
*Update* I just swapped the right side steering wheel controls to the 25901034 and the shift buttons aren’t working, which I had a feeling they wouldn’t since It was just a direct swap. I’ll look over the shit button schematics tonight to determine if they could be rerouted into the steering wheel and plugged into the left side wheel controls. Also the back lightings green instead of white which is a little disappointing. I do think this approach is doable for shifting controls but I don’t know if anything could be done about the button backlighting…

Although there still might be some hope for steering wheel shift controls using 25901034 off the 2009 H2 Hummer. At 35$ I’m willing to take the gamble to give it a try, it might be plug and play…to be continued…
*Update* I just swapped the right side steering wheel controls to the 25901034 and the shift buttons aren’t working, which I had a feeling they wouldn’t since It was just a direct swap. I’ll look over the shit button schematics tonight to determine if they could be rerouted into the steering wheel and plugged into the left side wheel controls. Also the back lightings green instead of white which is a little disappointing. I do think this approach is doable for shifting controls but I don’t know if anything could be done about the button backlighting…
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