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Old 07-21-2021, 01:49 PM   #15
cam765
 
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I am not convinced that the pretensioner deployment has anything to do with this with regards to a software issue, although it is possible the deployment did some damage to the underside of the seat. It is tempting to assume a poor connection from removing and installing the seats. It may be worthwhile to check the large under seat connector for any bent pins in the male side of the connector.

I checked the repair manual, and here is how the seat HVAC system works: "The driver and passenger heated and vented seat switches are located near the HVAC controls on the center stack. The BCM is the heated and vented seat system master. It monitors heated/vented seat switch activations to determine user requested operating mode. Based on the requested operating mode, the BCM sends a LIN Bus serial data message to the front seat heating control module how to drive the self-regulated heating pads or ventilation motors. The BCM also controls the indicators used to provide the operator with feedback as to the operating status of the system. With each press of the switch, the system will cycle through High, Medium, Low, and then back to Off again. The BCM also controls the seat temperature and mode indicators, via the serial data line, used to provide the operator with feedback as to the operating status of the system."

So, the BCM and front seat heating control module are the other likely issues. I would be interested in the front seat heating control module. I pulled up the diagram for where it is located below. This is located under the passenger seat (controls both the driver and passenger seat). I would start with an inspection of this. Look for damage to the wiring, connector, the module itself including any burnt material...

https://ibb.co/jVQG6wr
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Old 07-21-2021, 05:55 PM   #16
Jarek
 
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This is the hint that I was looking for cam765 especially as I was wondering why both seats were affected but if 1 module controls both this makes sense now.
Also thank you for providing the diagram!

Will check the module tomorrow and will let you know the outcome.
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Mods so far: K&N oil air filter, rear lamps EU conversion with sequential turn signal, exhaust modification to 4 tips (non-NPP), LED rear fog light (EU requirement), side-markers conversion to LED
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Old 07-21-2021, 10:57 PM   #17
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I think you need to BCM reflash. That was my point with the Recaro story - sorry I wasn't more clear. My point was that with the Recaro seats, you can plug them in with everything powered up and connected, but they still won't work without a BCM reflash. I think you need the same BCM reflash for your stock seats to work if you can't find anything unplugged.

-Geoff
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Old Yesterday, 01:31 AM   #18
Jarek
 
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Thank you Geoff
But if there was no change of seats why would the BCM need to be re-flashed?
I suspect disconnected plug or mechanical damage here (when seats were taken out for tensioner repair).
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Camaro SS 2017 Convertible, 2SS trim, V8 6.2L 455HP 618Nm, A8, Silver
Mods so far: K&N oil air filter, rear lamps EU conversion with sequential turn signal, exhaust modification to 4 tips (non-NPP), LED rear fog light (EU requirement), side-markers conversion to LED
Mods planned: Morimoto LED lamps set (front+rear)
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Old Yesterday, 08:55 AM   #19
SomeGeoffGuy
 
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Quote:
Originally Posted by Jarek View Post
Thank you Geoff
But if there was no change of seats why would the BCM need to be re-flashed?
I suspect disconnected plug or mechanical damage here (when seats were taken out for tensioner repair).
I think they had to re-flash for the pre-tensioner, so maybe that is when it got screwed up. Definitely look for bent plugs and pins first though.

-Geoff
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Old Yesterday, 11:46 AM   #20
Jarek
 
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Will do!
Question is which module controls seat-belts and should be cleared after tensioner fix - SDM or BCM?
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Camaro SS 2017 Convertible, 2SS trim, V8 6.2L 455HP 618Nm, A8, Silver
Mods so far: K&N oil air filter, rear lamps EU conversion with sequential turn signal, exhaust modification to 4 tips (non-NPP), LED rear fog light (EU requirement), side-markers conversion to LED
Mods planned: Morimoto LED lamps set (front+rear)

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