Two problems related to turn signal have 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.
At different times turn signals, brights, brake lights will quit working and dash light indicator that air bag is not working will illuminate. This can happen while driving or when first starting up. At times you can push stalk up for a right hand turn and left turn signal indicator will light up and blink. If you push the stalk down for a left turn signal nothing will happen.
Wiring for turnsignals melts down. There is a wire harness with a connector at the turn front signals, the wire gauge is in adeqaute and causea excessive heat build-up this causes the wires and connectors to the front turn signals to melt down and the turn signals become inoperable. I have replaced these components twice due to thia issue. The resistor pack for air conditioning blower fan speed control melts and catches fire. I have replaced this part twice and ultimately have bypassed the resistor pack leaving the ac blower with only the choice of high speed or off.