Originally Posted by Mike Kwarciany

I have a 2014 Impala LTZ with just over 50,000 miles on it. I didnt have it for more than a month when I was struck by another car on the passenger side rear, right where the blind zone module is located. Needless to say it was replaced. Fast forward to 2017, my blind zone detector says its not working and needs to be serviced. I took it to the dealer and he ways I need both modules and a wiring harness. I think I was quoted over $1000.00. I took it back to the body shop because they offered a lifetime warrenty on their repairs. they replaced the wiring harness and the module on the side it was hit. It worked for a while but this last winter, my blind zone warning came on, my reverse warning wont work and my front camera doesnt work.
One service person at the dealer ship told me that the modules will swell up when they get full of salt and water and thats exactly what happened. What kind of system does GM put on its cars that works like that. A large amount of the cars they sell are in areas with salt and snow.
I have always been a GM guy but this makes me wonder. I shouldnt have to deal with this type of stuff on such a low mileage car.

Originally Posted by mpieroway

There is a definite issue with the side detection system, all the sensitive electronics for it are just up under the rear valance of the Impala. They are exposed to all kinds of environmental exposure, namely water (and salt if your roads are salted in the winter) and have absolutely no waterproofing. Such a simple solution to avoid the issue and something that would have cost GM pennies. The same components are used across many of the GM model lines and according to the parts guy at my local dealership, he can't keep the control modules in stock (there are two in each vehicle). I am in discussion with GM Canada now because I have purchased five of the modules ($500 each) and two of the wire harnesses ($130 each) to repair my system. All they seem to think is appropriate is to offer to fix it at 50% of the repair cost.

What they are trying to avoid acknowledging is that the shorting caused by the electrical component corrosion, wreaks havoc with the entire computer system in the vehicle. I have had eight power downs while operating my Impala on the highway, and no error codes log. I figure at this point it will take fatalities for GM to do a recall and actually solve the issue. Some one else said Service Bulletin, the problem with Service Bulletins is it is still a customer responsibility to pay for the repair.

Don't get me wrong I love my Impala, but this is a major issue.