This is my ZR2 and I wanted to comment directly.
Most of the comments here are fair enough, if the yaw sensor felt too much a learn then the airbags deployed as intended.
Where does it say in the manual the degree angle you shouldn't pass, using the built in off road angle display that's on the DIC?
The things that I want to point out is that Chevy markets this truck and a "purpose built premium off road truck" and markets it with photos of it jumping, sliding, rock crawling, etc. While the sensors or programming in this truck might be perfect for all other GM trucks, this one is supposed to be special - they pretty much dare you to push the limits of the ZR2 in the marketing. I did just that.
With that said, my first gripe is how the engineering on this truck and marketing are two far different things if the airbags can go off (even on just a small number of them) when it's not in an actual rollover situation.
When I said "not leaned over too far" I mean that there was absolutely no chance of the truck rolling over and I felt I had before been on angles steeper than when it went off. I know, it's subjective. I was moving slowly, in 4wd low in offload mode, there was not sudden drop or jolt.
GMC could very well just change the software to disable or raise the side curtain airbags when in off road mode, or with a switch - with all the appropriate warning labels.
They have overlooked this and left in the same parameters as all other trucks, which isn't right for a ZR2.
The thing that really has me fired up is instead of telling me why the airbags went off, giving me any data they most certainly have from the Raytheon investigator analysis of the black box, they have chosen to make up excuses of not paying for repairs.
I could live with them telling me "you were at 20º lean when the airbags deployed, they work as intended and we're not covering it".
Instead they said:" it was advised that damage to your Colorado and aftermarket wiring may have had some impact in the deployment no repair assistance will be provided by General Motors."
The "damage" was a minor dent on the fender THAT THE DEALER CASUED AFTER I DROPPED IT OFF, they have taken responsibility for it. that was the icing on the cake to find fresh damage to my truck yesterday when meeting my insurance.
So that leaves my "electrical modifications", which was adding LED lights and a power cable for my winch. Anyone with some technical knowledge would argue that correcting a few accessories the battery could not effect airbag deployment.
GMC has dug in and will not answer my phone calls, I have requested their findings in writing and they have not sent it to me, beyond a reply on facebook from Chevy Trucks that I quoted above in the official reason they are denying the claim.
In my view, this is a safety issue for all ZR2 owners who are more likely to drive their trucks on challenging terrain that folks with more standard trucks. Besides that, I'm looking at being without my brand new truck for 5-6 weeks and it's unknown if my insurance is going to cover it. They can't determine if it was a system malfunction which should be a warranty thing, or if it was a comprehensive claim due to how I was driving the truck. I'll either pay out of pocket completely or I'll pay the deductible and look forward to higher premiums. I've never made an auto claim in 30 years of driving.
Part of my frustration is the fact that it happened, the other is the response from GMC to a lifelong customer.
I'm sharing my story in hopes of helping anyone else avoid this mess, it's happened 4 times in ZR2's so far that can be found online.
I don't see GM changing their mind... they are done with me obviously and shame on them.