Darth_Vader

Chris is a great guy to work with and the custom BCM programming may be the best way to do this easily, so I highly recommend anyone looking to do this reach out to him. For anyone wondering, not selling any harnesses, all the information to do this is included in this thread including the controller to get the switches to work. Glad to see some have had success, it was a fun project and interesting to dive into the LIN bus. I am just too busy with YouTube and breaking my Silverado every time I take it to the track to spend a lot of time on projects like this anymore.

If the TCM isn't locked and the part number for the TCM is the same for both you can write the config from the Corvette to it, but it probably wouldn't be as a good an actual tune give how Torque is utilized to control transmission parameters.

Good to know

It was on a semi-built shortblock, but with stock suspension and rear end, have to believe someone has posted a better time on the L83.

Did a few searches and only came up with a mild TT setup running 9.9 back in 2017, gotta believe someone has gotten an L83 faster since then.

Steering wheel won't light up until the connection to the cluster is made.

Nolan, Sorry I haven't responded to your last message, been tied up. If you are wanting to use the stock seats without having to use the factory modules you can use a device that will allow PWM output, much like we used in the heated seat setup in this thread, except you probably don't need a device like the Canny 7 that talks LIN bus if you are not worried about using the stock switches. The stock seat elements are still based on variable voltage as far as I know, maybe someone can chime in that knows more, but that means if you use a MOSFET power supply like we use on the heated seat retrofit as it allows you to use PWM to vary the voltage. For those of you still wanting to retrofit the factory seats here is the latest link to the Canny 7: Canny Logic 7 on eBay Thanks, Kyle

Jeff, So this is kind of a double edged sword. Yes, this will let you do the relearn. But I can't get it to work, and there is a specific reason why and I'm not sure exactly why that is but the long and short of it is that it isn't pulling in TCM specific parameters which is what it needs to allow the reset steps to be executed. I've tried six different ways to get it to work with no luck. So this is a your mileage may vary kind of situation. But I would probably look for another solution because the VCX unit can be a pain to work with sometimes. Kyle

Thanks Sid, I will verify and let everyone know.

Haha, I didn't have much hope for it, but it was a short and easy test, and fairly cheap.

I installed the new rear body mounts that GM claims are designed to eliminate the vibration frequency of the Chevy Shake in TSB PI1354H Check out the results: YouTube Video of Body Mounts to fix the Chevy Shake?!

Okay guys, sorry for the late responses and thanks to everyone messaging me on here and on YouTube. If you could post your questions here so that when I answer the everyone has access to them that would be beneficial for all and now that I have had my last surgery I will try and be on the forums more often. Also don't forget to subscribe to my YouTube channel if you haven't already as I have some more projects in the works that I will be sharing in the coming weeks. Goat Rope Garage YouTube Page Here is the logic for the Canny 7, this was created using the latest firmware, you will need to update to that version before loading this or the LIN communication will not work as the GM system uses a non-standard speed that I had the Canny people add to the firmware so we could use this device with GM systems. That being said the original firmware that might be on the device may not support this but I have verified that it is available in the latest version. SeatHeaterFinalPublicVer2.cfd Thanks and I look forward to any questions and by all means please report back like Dave! Glad to see it is working out good for you! Kyle

Yeah, I wouldn't trust that app to diagnose the shake on these trucks. I have an EVA that shows my shake as being a first order tire vibration. Problem with that is the same vibration exists and I've ran three different sets of wheels/tires, two sets of axles and replaced a 4 rotors on a vehicle with less than 20k miles put on it in over three years. Would cost less to buy a used EVA or pay the dealer to run the pico to get you the vibration frequency and then try and track it down from there. But there are still no guarantees.

Sean, You are really going to the extreme! Ditch the BCM, not worth the hassle as there is a lot of communication going on that will keep the thing from even wanting to start to work. You are headed in the right direction, the only issue you are going to have is the rear heated seat switches are going to have different addresses, the commands are going to be the same most likely but you will have to figure out the addresses. You will need probably need two Canny's as it is now as I haven't had time to dig in further to try and figure out a way of getting all the switches on the same LIN channel without having them respond. Not saying it can't be done I just haven't spent a lot of time trying to do it. Your best bet is to find someone who has the rear heated switches that is nice enough to let you put a LIN sniffer on the switches to try and capture data to see what the addresses are, that is how I got the original addresses for the front ones. Good luck! Kyle

Have had some people who want to try themselves and attack this but need some extra info, so here you go! This is the addresses, commands and responses for the factory heated seat switches (works with the seat cooler switches too) on the LIN bus. Poll Command Passenger at 35ms 20 30 F5 61 FF Wake Command 61 Status Poll (Leave this blank, will return switch status that corresponds below) Poll Command Driver 80 30 F5 61 FF Wake Command C1 Status Poll Driver seat frame ID is C1 Heated Back Off: C1 00 00 00 00 Low: C1 00 09 00 00 Medium: C1 00 0A 00 00 High: C1 00 0B 00 00 Full Heat Off: C1 00 00 00 00 Low: C1 00 05 00 00 Medium: C1 00 06 00 00 High: C1 00 07 00 00 AC Off: C1 00 00 00 00 Low: C1 00 0D 00 00 Medium: C1 00 0E 00 00 High: C1 00 0F 00 00 Passenger seat frame ID is 61 Heated Back Off: 61 00 00 00 00 Low: 61 00 09 00 00 Medium: 61 00 0A 00 00 High: 61 00 0B 00 00 Full Heat Off: 61 00 00 00 00 Low: 61 00 05 00 00 Medium: 61 00 06 00 00 High: 61 00 07 00 00 AC Off: 61 00 00 00 00 Low: 61 00 0D 00 00 Medium: 61 00 0E 00 00 High: 61 00 0F 00 00 Good luck! Kyle