One problem related to automatic transmission column shift has been reported for the 2005 Chevrolet Colorado. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 Chevrolet Colorado based on all problems reported for the 2005 Colorado.
While driving down the road at approximately 35mph I struck a piece of road debris ( approx 6" piece of a muffler). The debris must have hit the connection between the gear shifter and the transmission and the vehicle automatically down shifted to 2nd gear from drive. The piece that broke was a plastic conection device that connected the cables of the gear shifter to the levers of the transmission. What concerns me is two issues: the tow truck driver said stated that he sees this all the time on chevy's and had I been driving faster (highway speeds) and the vehicle did such a sudden down shift there could have been a serious acciident. My final comment/question, why would such an important component be placed in such a vulnerable position and why would is be made of plastic and not shielded in some manner.