Notice of "check Gas cap" came up dashboard Tuesday. Gas cap was tight. Repair shop Cleared code - light went out. On Wednesday check Eng light came on. Replaced Gas cap. Repair shop Cleared code again- light went out. On the way home light came back on again. Diagnostic meter says "Emission Sensor Valve" Both times -->i believe was the Code name when they told me to tighten and/or change the Gas Cap which neither worked. Any suggestions?? What & where is the Emission Sensor Valve??
What do I do to fix Check engine light? See Below. on 2005 Chevrolet Avalanche 1500
by 4thgeer in Chesapeake, VA on August 27, 2012
3 answers 1 comment
ANSWER by Chevy Power on August 27, 2012
The evaporative emission system has a small leak usually it is the fuel cap. It seems like the cap being the problem has been eliminated. A good repair shop should be able to perform a smoke test to find the source of the leak. The canister vent valve is a common failure item on the avalance.
COMMENT by 4thgeer on September 07, 2012
Canister vent valve ended up being the fix for my problem. Light went out 2nd or 3rd start-up after that. Thank you for your help.
ANSWER by globalhelper on August 27, 2012
YOUR EVAP SYSTEM HAS A LEAK YOU NEED TO HAVE IT DIAG IT COULD BE 1 OF THREE SYSTEMS CAUSING THE ISSUE AND OF THOSE THREE IT COULD BE EVVN A BAD HOSE. HAVE SMOKE TEST DONE TO DETERMINE IF THERE IS A LEAK
ANSWER by ziptie12 on August 27, 2012
get the specific code(s) from them (if not already listed on your reciept) and post it here , maybe some one with GM experience with it can help get you in the right direction. AND possibly get references for a different shop ?
i have abs lite and brake lite on dash, code reader says 0141 but mechanic says its my electronic brake control module which is up to $1000. to fix. and when i search i get o2 sensor for code 0141...