Fuel Tank Pressure Sensor Code...2011 Yukon

[ARAMP1]

So I'm getting a P0452 code for Evaporative Emission System Pressure Sensor/Switch Low on my 2011 GMC Yukon XL 2500. After some online searching, it led me to the fuel tank pressure sensor. I thought it'd be an easy fix, so I order a sensor, drop the tank and low and behold, I can't find it.

Here is the part I have.

Here are pictures of the top of my tank. The first one is in the middle where the pickup and fuel lines are. The second is what I believe may be the actual pressure sensor. I just can't find a part in the parts store that looks like that. Ideas?

 

[sweetk30]

2nd looks like evap vent lines hook up points and your about to break the left one clean off there in the pic .

your sensor link looks like a reg evap sensor and most i recall seeing were on the main sender unit . but this newer stuff who knows were they install them any more . maybe check the black vapor can for the sensor on it ? ?

 

[Fordum]

The fuel tank pressure test system is a little more complicated than you might think. The computer compares lots of parameters to determine what the pressure should be. But, the bottom line is, that the pressure is not what the computer thinks it should be. Of course a bad pressure sensor would cause a trouble code. But the sensor is just one part, compare that with the number of connections of hoses associated with the fuel system. Any bad connection or gasket that lets pressure escape would show up as low fuel tank pressure.
In most cars these days, a loose fuel cap will trigger a trouble code due to low fuel tank pressure.
A bad vent hose connection, fuel tank sending gasket, leaky hose, cracked carbon canister or a bad gasket on the fuel cap might cause the code you are seeing.
Also, that sensor measures the fuel tank pressure, which means it can be hooked to the tank, or any vent hose coming off the tank.
From what I can see online, it looks like it is most likely inside the tank. But I would check all the hoses and fittings first, unless you already have the tank out.

 

[diesel4me]

I've seen several rotted filler necks cause evap codes..and yes,on trucks even newer than 2011's !..things might not rot as fast in TN though as they do here..

 

[Cili]

It’s gotta be hooked to one of those evap lines somewhere

 

[Chevy305]

The evap canister is right in front of the tank. If I'm not mistaken the sensor should be on there.