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2009 Chevrolet Colorado Reduced Power and Check Engine Light

The throttle position sensor (TPS) on the Chevrolet Colorado LT is notorious for failure which causes:

  • Check engine light
  • Reduced Power message
  • OBD trouble code P2135

This issue is related to the throttle position sensor, and can be caused by faulty wiring to the TPS, bad connection at the TPS, or a failed TPS.

To correct this issue, the wiring harness, connector, and throttle position sensor must be inspected, tested, and/or replaced. The most common cause is a faulty TPS.

Affected Model Years

This issue affects Chevrolet Colorado model years 2006, 2009, 2010, 2011, 2012, 2017, .

34 people reported this problem

  • 2009 18,000 Miles
    The truck jerked abruptly in cruise speed, followed by stabiltrac and reduced power message display, simultaneous to a check engine light. The truck went to reduced engine performance mode. Shut down if vehicle cleared the stabtrac lights, but not the check engine light. After re-start 3 rd attempt thecreduced power mode cleared but the check engine light remained on. The truck was taken to a Chevy dealer for repair. I was told the engine would require removal for replacement of a suspected bad unspecified component.
  • 2009 131,075 Miles
    reduced power fault, check eng., traction

Chevrolet Colorado 2009 Common Problems