2010 chevy suburban have code po455

Question

where is the evap canister vent control valve located

Answer 1

P0455 Evaporative emission leak (large leak)

the location for the charcoal canister

Right near the fuel tank ,

# 09-06-04-028D: MIL Illuminated, DTCs P0442, P0446, P0455 or P0449 Set - Fuel Tank Hard to Fill - Moisture, Water, Corrosion at EVAP CVS Valve - (Apr 22, 2014)

Subject: MIL Illuminated, DTC P0442, P0446, P0455 or P0449 

Set - Fuel Tank Hard to Fill - Moisture, Water, Corrosion at EVAP CVS Valve 

Models: 
2007-2010 Cadillac Escalade Models
2007-2010 Chevrolet Avalanche, Suburban 1500, Tahoe
2007-2010 GMC Yukon Models, Yukon XL 1500 Models 

Attention: The revised EVAP CVS valve assembly comes with two tie-straps attached. These two tie-straps will be used to attach the EVAP CVS valve vent pipe to the fuel tank filler pipe.

This bulletin has been revised to update the Subject, add Hybrid Correction information and graphics and update the Labor Operation to the Global Labor Code (GLC) 4080448. Please discard Corporate Bulletin Number 09-06-04-028C.

Condition

^	Some customers may comment that the fuel tank is hard to fill.
^	They may also comment that the malfunction indicator lamp (MIL) is illuminated.
^	Upon investigation, a Technician may observe on a scan tool DTC P0442, P0446, P0455 or P0449 set as Current or in History.
^	During diagnosis there may be evidence of water intrusion at the evaporative emissions (EVAP) canister vent solenoid (CVS) valve.

Cause

The EVAP CVS valve draws fresh air into the EVAP system through a vent attached at the top of the conduit that is secured to the fuel filler pipe. Under certain operating conditions, dirt and dust intrusion into the CVS fresh air intake/venting system may result in restricted air flow.

Under certain operating conditions, if water is ingested into the EVAP CVS fresh air intake/venting system, it may reach the CVS valve causing corrosion in the CVS valve and may cause restrictions in the fresh air intake path when the CVS valve is in the closed position.

Ingested water will also collect in the CVS valve cyclonic filter in order to protect the EVAP canister. However, if the capacity of the cyclonic filter is exceeded, this may result in water entering the EVAP canister and cause an additional restriction during refueling.