2003 Chevrolet Suburban 1500 Q&A

2003 Chevrolet Suburban 1500 Question: Air conditioning heater control will only work on 4 and 5. How can I fix this?

Do I need to replace entire control module? -
Answer 1
the blower switch or blower resistor they both control the blower motor speed. -
Answer 2
I agree, check the switch and resistor. -
Answer 3
I agree, check the switch and resistor. -