Airbag Software Glitch: 4.3 Million Chevy Silverados, GMC Sierras and More Recalled

There’s a very dangerous software glitch in newer GM vehicles. It affects 19 different models of Chevrolet, GMC, Buick and Cadillac vehicles. The glitch is in the SDM (Airbag Sensing and Diagnostic Module) and may cause the Airbags and Seatbelts to not work properly.

In this video we go over how the SDM glitch happens and what GM is doing about it.


It seems like the news lately has just been FULL of huge recalls.


Takata’s airbag recall was definitely the biggest (and most confusing) recall in history at over 70 million.


Ford also had a pretty large recall for faulty door latches. That recall previously affected 650,000 vehicles, but they’ve now added on another 2 million.

And now General Motors is having the hardest time staying out of the news. The 2.6 million vehicles recalled for the ignition switch has nothing on the 4.2 million of this latest recall. GM just can’t seem to catch a break.


Hey guys, Ken here with 4WheelOnline. We’re posting new videos every Friday, so hit that subscribe button! And stick around until the end where we’ll show you how to check if your vehicle has been recalled.


As cars and trucks become more reliant on computers, the potential for a software glitch increases, and that’s the cause of GM’s latest 4.3 million vehicle recall.


The glitch happens in the SDM, which is the airbag sensing and diagnostic module.

According to GM, the glitch only occurs in very specific circumstances when a crash is “preceded by a specific event impacting vehicle dynamics”




So from what we can figure out, the SDM may enter a diagnostic mode that prevents it from actually doing it’s job. If the SDM is in this diagnostic mode during a crash, the front airbags won’t be deployed and the seat belt pretensioner won’t work.


There’s been at least one death linked to this recall and it’s likely more will come to light as time passes.


It’s also important to note that this has nothing to do with the Takata recalls,


Here are the trucks that are affected by this recall:


2014-2017 Silverado 1500 and Sierra 1500


2015-2017 Silverado HD, and Sierra HD


Now there are 19 models total, so if you own a 2014 or newer Buick, Chevy, GMC or Cadillac, you will probably want to check if your vehicle is a part of this recall.


Owners of affected vehicles should receive a notice in the mail but if you want to double check you can always check your VIN here.

To fix the issue GM is updating the vehicle’s software free of charge, because it’d be ridiculous if they made you pay for the fix.


Are you upset with GM over this recall or is it just something you expect from them at this point? Vote in our poll right here and then let us know your thoughts in the comments below.


But before you do that make sure to subscribe to our channel, then thumbs up and share this video with all your friends.


Until next time, I’m Ken with 4WheelOnline and you’ve just been refreshed.

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