Q&A

2001 GMC Sierra 1500

Question: CHECK ENGINE NOT COMING ON

• Check Engine Light Due to Restricted Secondary Air Injection Check Valves
  One or both secondary air injection check valves may become restricted causing poor air flow re...

  Common Problems > GMC Sierra 1500

• check engine light while towing
  ...this truck every day back and fourth to work with no problems. When we pull with this truck a check engine light comes on blinks then goes out. Any suggestions.

  Q&A > GMC > 2001 GMC Sierra 1500

• reset light..check engine
  the check engine light stays on ,but theres nothing wrong,How do I reset the light?

  Q&A > GMC > 2001 GMC Sierra 1500

• gas cap light
  After replacing the gas cap with a new one, they turned it off with a computer and it still comes back on after a few minutes. Could it be another problem?

  Q&A > GMC > 2007 GMC Sierra 1500

• where is the evaporative emission system vent valve/solenoid circuit located?
  just had the check engine light come on and the code was PO449

  Q&A > GMC > 2007 GMC Sierra 1500