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I have a 2021 TB RS and I’ve noticed that my rear spoiler brake light will flash 3 times anytime I press the brake pedal. I thought this was normal, and it may be, but when I noticed other RS’s this brake light never flashes like mine. I have noticed this on more than one occasion. Is this feature a part of a package? Is there I setting I can find to change this? Or is this not normal?
 

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21 Trailblazer LT AWD
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I have a 2021 TB RS and I’ve noticed that my rear spoiler brake light will flash 3 times anytime I press the brake pedal. I thought this was normal, and it may be, but when I noticed other RS’s this brake light never flashes like mine. I have noticed this on more than one occasion. Is this feature a part of a package? Is there I setting I can find to change this? Or is this not normal?
My LT AWD is does a solid red light when brakes are applied, I suggest taking it into service, that shouldn't be normal.
 
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