Airflow from Defrost Vent - kw air defroster HVAC performance volume

When servicing the vehicle with the VIN you entered, the following diagnosis might be helpful if the vehicle exhibits the described symptoms.

Airflow from left side defrost vent less than right side.

The left side defrost vent has less volume than the right side. Putting your hand over the right vent, there is more air flow at the left side of the right vent than the right side of the right vent. The left vent has even air flow across the whole vent. Compared to like vehicles, this is normal operation. No repair attempts should be made.

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Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. If these steps do not resolve the condition, please contact GM TAC for further diagnostic assistance. This diagnostic approach was developed for the vehicle with the VIN you entered and should not be automatically be used for other vehicles with similar symptoms.

(2004 Chevrolet Colorado 2WD/4WD) and (2004 GMC Canyon 2WD/4WD)

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