Question about 2000 Chevrolet Silverado 1500
Posted by Anonymous on
There are two vent/purge valves - one on the engine that takes vapor from the gas tank and cycles it into the intake manifold. The other one is connected by a hose to the vapor canister. I don't know which one you bought, but it can't hurt to replace both - the one that fails most often is the one connected to the canister and is usually mounted under the vehicle at the back. It often fails due to road contamination getting into the solenoid.
Posted on Dec 21, 2017
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Posted on Jan 02, 2017
You are right. You need the vent valve not the purge valve. The vent valve is a dealer item. Also this is a common problem and GM has released a bulletin on this that involves moving the location of the valve and running some new lines. It comes as a kit from GM, and it costs about a 100 bucks.
Posted on Dec 02, 2010
SOURCE: code p0449 came on in
I am sending you a little info on your problem.. Hope it helps.. Best of Luck..
2006 Chevrolet Colorado LT 2.8L, Vin 8, Eng Cfg L4 Customer Concern: Current Powertrain Control Module (PCM) code P0449. Tests/Procedures: 1. Inspect the evaporative vent solenoid, near the fuel tank and evaporative canister. Look for wire damage, corrosion.
2. Check voltage to the solenoid on the Orange wire. It should be battery voltage, backprobing. If not, check the voltage level on the CAN VENT fuse, #69 in the Underhood Bussed Electrical Center (UBEC).
3. Cycle the evaporative vent solenoid with a scan tool. The solenoid should click.
4. Backprobe the White wire, pin 22 of the blue PCM connector. The voltage on this wire should be battery voltage with the solenoid off and close to 0 volts with the solenoid on. Potential Causes: Evaporative Vent Solenoid
Tech Tips: The evaporative vent solenoid is attached to the side of the evaporative canister above the spare tire.
Posted on Aug 21, 2011
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