I have a 2011 chevy malibu lt 4 cylinder. After the recent cold one day my information center displayed service traction control reduced engine power and the check engine light came on. When I ran the code it came up p2135 throttle/pedal position sensor/switch A/b voltage correlation. I replaced the throttle pedal position sensor and just had it throw the same code. Im not sure what I need to do now. Please advise.