Question about Chevrolet Cars & Trucks
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Posted on Jan 02, 2017
the evaperative coil is malfuntioning, the code reads Evaporative Emission System Vent Valve/Solenoid Circuit check the canister thats black see if the cap has came off or the solenoid is dirty if so use berry-mans carb cleaner to clean it soft with a tooth brush also check to see if canister is cracked if it has a vachum leak it will cause the same problem, it could be a cracked hose at the device or the fuel tank.
Posted on Jun 19, 2009
SOURCE: 2006 Suburban-
It may need a gas cap, and if you do make sure you get it from the dealer. Not all caps sold on the aftermarket are right for your truck. The code that sets is "evap small leak detected" and while the cap is the most common cause on newer cars, all it takes is a tiny crack in a hose to let the air into the closed system. Replacing a 4 year old cap is the easiest, but if it comes back you will need to find a shop that has a smoke machine. There is a port on the system you hook up to and pumps smoke at very low pressure into the closed system and you follow all the lines until you see smoke coming out of the leak. It is work the cost to have it diagnosed because you cannot find the leak with out the machine and the repair is generally nominal in cost. In most states it will not pass inspection with this light on.
Hope this helps
Posted on Aug 20, 2009
A battery positive is supplied to the evaporative emission (EVAP) canister vent solenoid valve. The control module grounds the EVAP canister vent solenoid valve control circuit to close the valve by means of an internal switch called a driver. The scan tool displays the commanded state of the EVAP canister vent solenoid valve as ON or OFF. The control module monitors the status of the driver. If the control module detects an incorrect voltage for the commanded state of the driver, this DTC sets.
This Canister Normaly Sits Hidden Underhood on Rt or LFT sidr at Front under fender with 3-4 Hoses going to it and the Solinoid talked about is on TOP of Canister or Close By
Posted on Apr 08, 2010
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