ACDelco GM Genuine Parts 215-407 (15733604) Vapor Canister

Very easy to install. Located at center of vehicle next to gas tank. 3 hoses (squeeze until clips clear barb then pull).Goal was to fix the engine code P0446 (EVAP System Vent Control Circuit):I purchased and installed the following parts in order:1. ACDelco 214-646 GM Original Equipment Vapor Canister Purge Valve2. ACDelco 214-1091 GM Original Equipment Vapor Canister Vent Valve-> Same P0446 check engine light code came back after driving about 200 miles3. ACDelco 215-407 GM Original Equipment Vapor Canister4. ACDelco MU1615 GM Original Equipment Fuel Pump and Level Sensor Module with Seal, Float, and Harness-> Cleared Code, driven ~80 miles, no code yet...

After a few hundred miles and several weeks it seems to be holding up fine. As usual OEM parts are a little pricey, but probably worth it most of the time.FYI: If you have these "Evaporative Emission Control System Leak Detected" codes (P0455, P0422, etc) coming up, the 'cheap guy' sequence is to re-tighten your gas cap & clear the code. If it comes back, replace the gas cap if it is over a couple years old, and clear the code. If it comes back, check the two valves first (purge valve & vent valve), especially if they are original and years old, as they have to open/close a zillion times and wear out. Purge valve is on top of engine, vent valve is underneath near the charcoal canister and gas tank. Both valves for my car were cheap enough to just replace versus trying to test them first. We also found a broken(completely off) port on the charcoal canister, leaving hose open to the air. So, to avoid the mechanic and the time/labor$ for 'smoke testing', do: gas cap, 2 valves, visual inspection first before you take it to a mechanic.

There is conflicting information on the web about how long it takes to install this vapor canister. It is actually super easy and it is a DIY job in 15 minutes IF you know the trick to undo the hose clamps. On some model years the GM hose clamp is a strange plastic squeeze fitting that was designed by an engineer who was traumatized by childproof caps, so he got revenge by designing an adultproof hose connector. You have to squeeze the two tabs on the side and then at the same time with the other hand (or ideally with pliers) squeeze really hard at the base of the ring (here's a diagram). This will allow the two locking tabs to clear and then you can pull it out. Once you have the 3 hoses pulled out, this new unit slides right in with two bolts. Now that I have some practice, if I had to replace it again I could probably do it in less than 5 minutes.

Part was identical to the original one and fit perfectly. Also stopped the Service Engine Soon light from coming on, most likely because one of the hose connections on the old one was broken. Great value!!

It worked for my 2002 Suburban 2500 with the 6 liter engine. I also replaced the evap valve under the rear of the car and the one on the top of the engine and so far it has cleared the check engine light. Hopefully I will be able to fill the tank with gas now without the pump constantly turning off. The evap canister is located just in front of the fuel tank, you need to look closely because there is a crossmember right under it so it's kind of hidden.