2007 Chevy Avalanche Code P0449

2007 CHEVROLET AVALANCHE
98,000 MILES • V8 • 4WD • AUTOMATIC
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SHANAHAN22
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  • 1 POST
my check engine light came on I had the code read and it says its the evaporative emission system vent control circuit intermittent?? what needs to be replaced and is it difficult
May 9, 2010 at 8:24 PM
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MHPAUTOS
  • CERTIFIED EXPERT
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Hi there,

An intermittent fault will be a real pain to track down if you are not very familiar with auto electrical systems, you will need some testing hear, a ECU safe (diode test light) a multi meter and a variety of back probes and a fair amount of patents, if in doubt get this looked at by a mechanic.

Mark (mhpautos)
May 10, 2010 at 4:10 AM