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Scott K
Scott K, ASE Master Tech/Instructor
Category: Chevy
Satisfied Customers: 1569
Experience:  20 yrs Experience; GM factory Training ASE Master Certified with L1 advanced engine diagnostics
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Evap vent valve located on a 2006 chevy silverado ext cab 5.

This answer was rated:

where is the evap vent valve located on a 2006 chevy silverado ext cab 5.3l and do i need to drop gastank to find,looked everywhere i have the part but coud not locate where it goes

Hello and welcome to Just answer,


GM has a service procedure upon vent valve replacement a new filter is added and relocated, this should come with the valve you have if not the filter kit is recommended. The gas tank does not need to be dropped.


Below is the part number and service bulletin with pictures that show what needs to be done


19207763 (2004-2009 Model Year)

Solenoid Kit, EVAP Emission Canister Vent Valve



Click to view EVAP vent valve service bulletin



Evaporative Emission Canister Vent Solenoid Valve Replacement (Extended Cab)

  1. Raise and suitably support the vehicle.
  2. Disconnect the evaporative emission (EVAP) canister vent valve electrical connector.
  3. Disconnect the canister pipe from the vent valve.
  4. Push in the retainer and remove the existing canister vent valve from the fuel tank clip or mounting bracket. Discard the old valve.
  5. Cut back the existing canister pipe approximately 51 mm (2 in) to remove the quick connect end.

  6. Object Number:(NNN) NNN-NNNN Size: SH

  7. Install the new canister vent valve to the fuel tank clip or mounting bracket.
  8. Cut a bulk 5/8 in heater hose to a length of approximately 76 mm (3 in).
  9. Install the hose between the vent valve and the canister pipe and secure using clamps.
  10. Attach a bulk 5/8 in heater hose to the vent valve port and secure using a clamp. Run a length as needed along the frame rail routing to the area above the transmission.
  11. Cut the hose to determined length and install the supplied filter box. Secure using a clamp.

  12. Object Number:(NNN) NNN-NNNN Size: SH

  13. Secure the filter box to the fuel lines above the transmission using a tie strap.
  14. The filter box opening should be pointing downward.

  15. Connect the EVAP canister vent valve electrical connector.
  16. Tie strap the hose as needed along the frame rail in order to keep the hose away from the pinch-points and heat sources.
  17. Lower the vehicle.
Scott K and 4 other Chevy Specialists are ready to help you
Customer: replied 8 years ago.
still does not show where the orginal is i look fo over hr and still cant find where tthe stock evap valve is will you show pick of this on my truck

Does this help if not let me know? find the charcaol canister and look for the large hose leaving this leads to the vent valve


Object Number:(NNN) NNN-NNNN Size: LF

(1)Fuel Pump and Sender Assembly
(2)Evaporative Emissions (EVAP) Canister Vent Solenoid

Customer: replied 8 years ago.

cant see anythging on the sises of the gas tank found the big box but cant find #2 in your picture


On the charcoal canister (big box) there are 3 lines or hoses, 2 will be close together and one will be off by itself, it should be the largest hose on the canister, follow this hose to the valve.


This should be the location of the valve. towards the rear of the tank.


Object Number:(NNN) NNN-NNNN Size: SH

Customer: replied 8 years ago.
found the canister with the lines followed line to a round plastic piece in between frame and tank a real pain to get at if this is it it is held to the frame on a bracket with what appers to bew a 9/16 bold could this be it?
Probably a 13 or 15mm head bolt but it sounds like you found it, one line on the canister leads to the engine and the other to the top of the tank , and the other to the vent valve.
Customer: replied 8 years ago.

last thing i hope,after i take this off will i have enough room to relocate and disconnect it

to run hose

Yes once you get the bolt out, it should move out so you can disconnect it.


Do you have the kit I listed in the first post?

Customer: replied 8 years ago.

i bought part(NNN) NNN-NNNN/p>

gm 19207763,looks like it but is non electrical and one part looks exactly like tthe vent to be now on the top of tranny

The vent valve should be electrical and the filter assy is the piece that is placed up on the tranny vent, You will need some 5/8' heater hose and 4 clamps to fit.

Customer: replied 8 years ago.
not sure if correct kit can you check i bought off ebay gm 19207763

That is the correct number but it should have an electric vent valve inside.


You still have the link to the post on ebay?



Customer: replied 8 years ago.



Does what you have look like the picture on the Ebay page?


Customer: replied 8 years ago.
no looks like what was on the picture in a blue chevy you sent me 2 pieces
Customer: replied 8 years ago.
sorry Scott the part is electrical round on top and smaller round end has 2 male post connector,is this correct
Customer: replied 8 years ago.
do i have the correct part?

Okay I think you got the right part but you dont have the filter kit.


You can replace just the valve if the vent hose is not clogged, which is the other hose on the valve not leading to the canister.

Customer: replied 8 years ago.
ok this is what the dealer showed me ill don t see a filter will you show or send me a part number and picture

The "kit" part number 19207763, comes with the filter and vent valve, you then need to purchase about 5 feet of 5/8' heater hose and 4 clamps to perform the bulletin.


The part sold on ebay was probably old stock from a dealer that was updated with the new kit and was only the valve.


The filter and hose relocates the inlet to the vent valve to a better location so water, mud and dirt does not get ingested into the valve causing it to leak or stick open.

Customer: replied 8 years ago.
it has 2 parts to it one goes 2 tranny and one is electrical

Good, now you just need to get the heater hose and clamps, and a tie strap or two.



Customer: replied 8 years ago.
thanks 4 everything

Thank you


Scott K