Having problems with your 2002 Chevrolet TrailBlazer ?

There is no air flow from dash vents when climate control is put on dash vent only...the air continues to blow from floor....when control is switched to defrost that works fine but not from dash vents???

Posted / edited by AnonymousUser on : 19-02-2018

Answers :

You need part GM Part number 89018675 or ACDelco 15-73596. The Mode Selector Actuator. What happens is the part is a CHEAP part POORLY designed and when it goes to turn the flaps inside the HVAC unit its the plastic gear slips instead of turning the flap!!!

Just to forward you you might want a deal to install this art for you unless your good at fixing your own vehicle, because you need SMALL sockets and a lot of patience to get this part in!!!

The part is ALMOST directly above the steering shaft for your steering wheel, so theres a lot you got to remove before you will even see them!!!

I only recommend you to have a dealer put this part in for you, unless you have your own service manual!!

Because there is 5 of these darn things and if you pick the wrong one you will have to do it all over again!!!

3 on the Drivers side and 2 on the Passengers side!!

But replacing this part SHOULD solve all your problems!! AS it did for me and i was having the same issues as you have described!!


Is there a diagram that i can use
Repair Help & Product Troubleshooting for 2002 Chevrolet TrailBlazer

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