When the ventilation system on 20052010 Jeep Grand Cherokees and Commander stops blending the temperature correctly, the problem may be a broken actuator arm or blend door shaft in the air distribution box. This can happen when debris prevents the blend door from moving and breaks along the shaft.

Replacing the air box is an expensive and timeconsuming job. The part alone is several hundred dollars, and also requires removing the entire dashboard to replace it.

Depending on whether a vehicle is equipped with a singlezone or dualzone climate system and where the breakage occurs, Dorman offers OE FIX solutions that allow you to repair a broken actuator arm or blend door shaft without removing the dashboard or air box.

This video shows you how to repair either a singlezone or dualzone system when the actuator arm has broken using Dorman part number 604387, or when the blend door shaft has broken using Dorman part number 604388. The video also demonstrates how to repair a broken blend door shaft on a singlezone system using Dorman’s blend door actuator relocation kit, part number 604386.


Learn more about each of these parts here:
604386: https://www.dormanproducts.com/p1352...
604387: https://www.dormanproducts.com/p1350...
604388: https://www.dormanproducts.com/p1352...


Before ordering any of these repair kits, watch the full video to help you confirm the nature of your specific failure. If you have any questions about this repair, our tech line is always available to help at 18669332911.

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