One problem related to engine cooling system 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.
2005 chevy Colorado with around 84,000 miles (blown engine)!!! broken piston connecting rod; putting two holes on each side of the cylinder with the piston rod sticking completely through the opposite side of the cylinder. Oil and smoke that came from the vehicle could have caused a terrible accident, especially if there had been a motorcycle behind me. Replaced engine myself due to gm doing nothing. Filed a case with them and it was denied.