One problem related to cooling fan has been reported for the 2006 Chevrolet Colorado. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Chevrolet Colorado based on all problems reported for the 2006 Colorado.
Vehicle air blower fan for heat/air conditioner periodically stops working on settings 1,2,and 3. Fan continues to work on setting 4 appears to be a problem with this model. They have a new harness but you have to pay for it, no recall. They would not make a new harness unless they know there is a problem with the old one.