DURING A LATERAL MERGE PROCEDURE FROM A 30 DEGREE DECLINE TO A CITY STREET MOVING AT 16 MPH WITH MINIMAL LATERAL ACCELERATION THE ROLLOVER SENSOR SHOWED A 68 DEGREE SPIKE WITHIN 210 MILLISECONDS ENGAGING THE SIDE CURTAIN AIRBAGS AND SEAT BELT LOCKS. GIVING THE DRIVER A CONCUSSION. GM HAS DECLARED NORMAL SYSTEM OPERATION.