I have a 07 avalanche that has all 4 park assist sensors with part number 21995588 and when I look for replacements by part number all I find is that the part number does not apply to an 07 avalanche. Other park assist sensors that say they will work set a code B0958 symptom 8 - the object sensor signal circuit is invalid. am I missing a re learn procedure or just getting wrong information. wires have been checked and when I move the sensor the code follows. any input will be greatly appreciated