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

Do I need to replace entire control module?

by in Mount Washington, KY on July 01, 2014
3 answers
ANSWER by on July 01, 2014
the blower switch or blower resistor they both control the blower motor speed.
ANSWER by on July 01, 2014
I agree, check the switch and resistor.
ANSWER by on July 01, 2014
I agree, check the switch and resistor.