Three problems related to transfer case have been reported for the 2006 Chevrolet Trailblazer. The most recently reported issues are listed below.
The 2006 Trailblazer had issues with the 2-wheel drive/4-wheel drive actuator and sensor. I had the sensor replace under warrenty because the indicator light on the actuator handle was in a different range than what the knob indicated. After replacement, the truck indicator light would occasionally change while driving. There were no warning lights lights indcating that there was an issue with the power train system. The transfer case eventually burned up due to continuous swithing between high and low hears while driving. The truck lost power while driving at 65 miles an hour in mountainous and snowy conditions. The tansfer case, and sensor and actuator were all paid my the car owner.
Front axle of 2006 chevy Trailblazer became unattached from the transfer case.
While driving , the vehicle would shift from 2wheel drive down to 4 low, causing a very rapid decrease in speed and loss of control over vehicle, depending on driving speeds and rd conditions this could cause a very dangerous accident. I have had the vehicle into the dealer 4 times in the last month and they have replaced , 4wheel drive switch on dash, encoder motor on transfer case and reprogrammed stabiltrac, vehicle is still at dealer and trying to solve problem. Dealer has been very polite and understanding during this entire process.