[SS 1LE]

Originally Posted by Chevy71

I have vented seats in my car, you can't even tell they are on.. you aren't missing much!

Same thing with my wife's Equinox...can BARELY tell. Hence why I'm not sure if I would even do this mod lol...

[TJay74]

This will be a nice mod/update if it can be made to work, I don't even need OEM if a good aftermarket (5thgenDIY) came up with a solution. The problem will be not only having to buy the OEM AC controller and harnesses, that part will be easy. The next part will be the issue.

The BCM will have to be flashed to control the heating/ventilated features. That fan I can almost bet is 12+/Grd/PWM controlled. The BCM controls those features on Gm vehicles, there will be no way to program the BCM via the dealer. All of the modules are VIN tied now in the GM Global system, you wont be able to use a 2SS/ZL1 VIN to get the BCM programmed for the feature.

There is only 1 person in the aftermarket industry who knows the GM code to their BCM's and can program them, that is Chris White. The next issue is if Chris programs the BCM to make this work and then down the road GM releases an update for the BCM and you take your car in for work and the dealer flashes your BCM with the new VIN tied calibration for your car they will overwrite the custom calibration that Chris White makes for you.

The aftermarket solution may be the better one for long term viability.

[mjk3888]

Originally Posted by TJay74

This will be a nice mod/update if it can be made to work, I don't even need OEM if a good aftermarket (5thgenDIY) came up with a solution. The problem will be not only having to buy the OEM AC controller and harnesses, that part will be easy. The next part will be the issue.

The BCM will have to be flashed to control the heating/ventilated features. That fan I can almost bet is 12+/Grd/PWM controlled. The BCM controls those features on Gm vehicles, there will be no way to program the BCM via the dealer. All of the modules are VIN tied now in the GM Global system, you wont be able to use a 2SS/ZL1 VIN to get the BCM programmed for the feature.

There is only 1 person in the aftermarket industry who knows the GM code to their BCM's and can program them, that is Chris White. The next issue is if Chris programs the BCM to make this work and then down the road GM releases an update for the BCM and you take your car in for work and the dealer flashes your BCM with the new VIN tied calibration for your car they will overwrite the custom calibration that Chris White makes for you.

The aftermarket solution may be the better one for long term viability.

It was also mentioned a few pages back that the Manufacturer of the vent fan makes an otherwise identical model that is a simple 12v on/off switched unit. Replacing the stock fan with that would avoid the whole issue with it being controlled by the BCM.

[FlashBang23]

Originally Posted by TJay74

This will be a nice mod/update if it can be made to work, I don't even need OEM if a good aftermarket (5thgenDIY) came up with a solution. The problem will be not only having to buy the OEM AC controller and harnesses, that part will be easy. The next part will be the issue.

The BCM will have to be flashed to control the heating/ventilated features. That fan I can almost bet is 12+/Grd/PWM controlled. The BCM controls those features on Gm vehicles, there will be no way to program the BCM via the dealer. All of the modules are VIN tied now in the GM Global system, you wont be able to use a 2SS/ZL1 VIN to get the BCM programmed for the feature.

There is only 1 person in the aftermarket industry who knows the GM code to their BCM's and can program them, that is Chris White. The next issue is if Chris programs the BCM to make this work and then down the road GM releases an update for the BCM and you take your car in for work and the dealer flashes your BCM with the new VIN tied calibration for your car they will overwrite the custom calibration that Chris White makes for you.

The aftermarket solution may be the better one for long term viability.

If I'm not mistaken Chris is local to me (I remember him from my Pontiac days), if we end up needing to get him a test vehicle let me know.

Originally Posted by Summit1le1ss

This is what I'm lead to believe.
I pulled the trigger already and order one. 2ss AC controls.
With a diagram I already know I can figure out. We have done this before with a 2015 mustang.

Are you the guy who was on mustang6g doing the custom radio faceplates and premium toggle switches for base models? lol

[Summit1le1ss]

Originally Posted by FlashBang23

If I'm not mistaken Chris is local to me (I remember him from my Pontiac days), if we end up needing to get him a test vehicle let me know.



Are you the guy who was on mustang6g doing the custom radio faceplates and premium toggle switches for base models? lol

I was part of that group yes.

Programming the BCM isn't that difficult. Read the info from the vehicle to want, compare the data and make the changes. Updates should only effect the updated data, not the entire data. I am not 100% sure of this on GMs. This is stuff I'm researching as I have time.

The biggest difference here, verses the mustang is we had a large group of people all with certain knowledge working together for a solution. It was a good deal of trial and error. Plus we had a freaking wire diagram... Lol.

[TJay74]

Originally Posted by Summit1le1ss

I was part of that group yes.

Programming the BCM isn't that difficult. Read the info from the vehicle to want, compare the data and make the changes. Updates should only effect the updated data, not the entire data. I am not 100% sure of this on GMs. This is stuff I'm researching as I have time.

The biggest difference here, verses the mustang is we had a large group of people all with certain knowledge working together for a solution. It was a good deal of trial and error. Plus we had a freaking wire diagram... Lol.

I have spoke with Chris on this before on a truck forum, he has confirmed this fear. IF he programs the feature in and you take the car in for any update to the BCM it will flash over-write his calibration and you will lose the changes until you have him flash it again.

Also while the process of checking A against B to find the change to make, Chris is the only person I know of outside of GM that can program a BCM.

[Summit1le1ss]

Originally Posted by TJay74

I have spoke with Chris on this before on a truck forum, he has confirmed this fear. IF he programs the feature in and you take the car in for any update to the BCM it will flash over-write his calibration and you will lose the changes until you have him flash it again.

Also while the process of checking A against B to find the change to make, Chris is the only person I know of outside of GM that can program a BCM.

Sounds like this is the guy I need to speak with.
I'm not concerned about a reflash from the dealer. Once I have the data I can update myself if needed. I've used IDS for Ford. GM I use Tech2, PIC,J2534 and some...Custom stuff when needed. I already know I can retrieve the data, decoding is another thing where help or documents are very helpful. Custom CB to control the PWM is also an option. Heat I've already figured out a workable bypass, just need to test. Free time is very limited for me right now.
This is more of a "can't be done" thing to me now, than I want vented seats...Lol.
For any members here that owed a Mustang and remember me from the 6gmustang group know we went through is very same thing and came out winners. We will also!

Is Chris from Whites Auto?

[booyaa56]

[Summit1le1ss]

Found the wiring info!! ( Thanks Zack)

https://www.acdelcotechconnect.com/s...e-information/

It's on now!!
Module under the seat sends the PWM signal to the fans and voltage to the heaters, which gets its signal from the BCM which gets it signal from the switches.

Now I need the parts and time to experiment​.

[thescreensavers]

Originally Posted by Summit1le1ss

Found the wiring info!! ( Thanks Zack)

https://www.acdelcotechconnect.com/s...e-information/

It's on now!!
Module under the seat sends the PWM signal to the fans and voltage to the heaters, which gets its signal from the BCM which gets it signal from the switches.

Now I need the parts and time to experiment​.

Interesting, that should in theory make it easier to use a separate button on the seat to the module to feed it the same BCM commands(if its not digital ).

Is there a pinout you can post? Or more information about that module?

[Summit1le1ss]

Originally Posted by thescreensavers

Interesting, that should in theory make it easier to use a separate button on the seat to the module to feed it the same BCM commands(if its not digital ).

Is there a pinout you can post? Or more information about that module?

I will post along with diagram for audio, as been requested, this weekend. I'm currently not home and want to wait to use my computer and not just a tablet.
I still need the data from the BCM to compare and the parts I've ordered which should be waiting for me when I return to Florida.

From the manual.
The driver and front passenger vented seats are controlled by separate vented seat switches located with the HVAC controls. When a vented seat switch is pressed, a serial data message is sent from the HVAC controls to the body control module (BCM) indicating the vented seat command. The BCM serves as the heated and vented seat system master to determine the requested operating mode. The BCM then sends a serial data message to the seat heating control module indicating the vented seat command. In response to this message, the seat heating control module applies a low side pulse width modulation (PWM) signal through the seat blower motor control circuit to the seat cushion and seat back blower motors indicating the vented seat command. The logic in the blower motors set the blower speed to the switch set point

[Summit1le1ss]

Pinout. Tablet won't show the picture. Which is one reason I'm waiting. Gives connector number also.

[TJay74]

Well as long as Chris can handle the BCM changes this sounds like it should be a viable modification. His charges are not cheap though, he is working with a company now that handles all of the HMI updates for people who are upgrading their infotainment systems in GM vehicles.

Most of the flash charges I have seen are in the $500 range to flash the modules. He goes by "GTPrix" on any board he is on, he is pretty active on most all GM boards.

[bub]

Here's the connector referenced for the under seat module. Haven't seen this module.

https://nexelec.com/YAZAKI-7283907630/