2007 Chevrolet Colorado Q&A

2007 Chevrolet Colorado Question: Air control unit only blows air on #4

Numbers 1,2, and 3 are out. Only #4 blows air. How can i repair this? -
Answer 1
I WOULD BE SUSPECT OF THE BLOWER MOTOR RESISTOR . ITS NEXT TO THE BLOWER MOTOR -
Comment 1
it is the P.O.S. wiring harness. -