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Old 08-07-2013, 04:42 PM
j cAT j cAT is offline
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Re: Check engine light 2008 silverado z71

Quote:
Originally Posted by TacomaMan. View Post
recently my check engine light came on, I had the codes read, the tech said that i had air getting into my fuel system, i replaced my gas cap. my light is still on, he also mentioned some kind of emissions sylinoid may need replaced, or a vent valve idk.

I recently drove up to Sandusky OH for the weekend, my light didnt come on til i refuled with gas containing 15% enthenol. the engine is running fine, no miss, has good power. I ran it down to a 1/4 of a tank and filled back up and the light is still on.
I had the use of a chevy flex fuel for a while. used E85 the lower cost does NOT make the use of this fuel a good deal. we are getting screwed with this cost for lower MPG fuel.

on the code issue you may need a new canister or vent valve/cleaning vent line issue. If you fill you tank to the very top then park it this is a common code.

liquid fuel causes the canister to plug up the venting valves/lines.

you could also have a leak like the vent line in/around the fuel tank another common problem.
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TacomaMan. (08-28-2013)