2004 Chevy Silverado Four Wheel Drive Automatic
Trouble code: P0455
Flashes tighten gas cap twice, then the engine light come on.
I've replace the gas cap twice with one after market and one factory. Checked all hose clamps - all seem to be tight and no holes in any of the hoses. I've checked the pipe where the gas cap seals and it's all nice and shiny with no gouges or dents.
This used to happen as soon as I had less than 3/4 of a tank of gas. Now it's happening sooner. Been dealing with this for about a year now.
have the same problem?
Tuesday, November 3rd, 2009 AT 7:58 AM