The insurance industry likes the 1/2 vehicle width frontal crash.
Not sure if rockers would help, my guess would be no.
I am sure that some aftermarket brush guards are known to interfere with the front SIR discriminating sensors. GM accessories have to pass crash tests before they can sell them; whereas, aftermarket companies are not required.
The front sensors are not used to determine if the bags deploy, they are used to determine the severity of a frontal collision. The SDM uses this information as to whether not to deploy the air bags in stage 1 or stage 2.
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Black Sheep Hummer Squadron
(ME TOO)
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