C6 Corvette ABS and Active handling faults @90mph

[BigDz]

In my nephews '06 Vette, when the car gets up to 90 mph, all of the fault lights on the dash light up??? This includes active handling and ABS. The dealer said it was the way an aftermarket stereo was installed to the CPU. The stereo is a Pioneer CD-1B100. This makes no sense to me. Has anyone ever seen this happen? Should we have the dealer reflash the CPU? Any thoughts would be appreciated.

[0rion]

that's a new one on me. Do ALL the lights come on or just the abs and active handling lights. What are the specific codes you get? Is it exactly at 90 every time? I've never heard of this one.