Heater blowing cold air passenger side only

Asked by Kluanee Jan 05, 2019 at 01:01 AM about the 2003 Chevrolet Trailblazer LT 4WD

Question type: Maintenance & Repair

Hello, I just switch out my heater control
module (as it would not switch to defrost nor
floor) and since the switch passenger side
blows just cold air no matter what setting of
heat I put it on. The temperature here is -26
so heat in the car is a must. Than you for
your help.

1 Answer

11,225

Your blend actuators are the culprit, PIA to switch out. Pretty common unfortunately.

1 people found this helpful.

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