how do i replace fan speed control resistor in a 2005 chevy trailblazer on 2005 Chevrolet Trailblazer

No air flow from front vents plenty of air flow in rear vents.Thanks Jeff

Asked by for the 2005 Chevrolet Trailblazer
does the frt blower have all speeds,if so you have a blend door issue most likely
1 more answer
you could have a blend door problem