03 trailblazer hear don't work

Asked by Dec 02, 2014 at 01:41 PM about the 2003 Chevrolet TrailBlazer

Question type: Maintenance & Repair

my 03 trailblazer blow heat on driver side only, everywhere else is just cold air?

1 Answer

12,830

When you rotate the directional sw .(upper-heat, lower-heat , defrost etc) do the vents change the flow? There is only 2 possibilities I'm aware of (I'm not perfect) one is the Rotary sw (if it is rotary and not horizontal/vertical) is blocking vacuum or the actuator (a valve that physically changes the vent baffles) is not working

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