One problem related to fuel hoses lines/piping and fittings has been reported for the 2006 Chevrolet Colorado.
2006 Chevrolet Colorado 3. 5 liter 4x4 fuel leak at the fuel tank where the fuel feed line connects to the fuel tank by a quick connector. This is a high pressure line and the fuel was spraying out which could have potentially caused a fire and explosion from the hot exhaust. It appears that safety is being compromised for quick assembly. Complaint # 2 engine power is reduced when codes for throttle position sensor. When code is cleared or erased full power resumes. It appears that is not necessary to reduce power for this code.