Question about 2004 Chevrolet Colorado

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Is there a sensor on the top of the tank on a 2004 Colorado or just the one on the char-co canister and the one under the alt ? thanks

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There is a pressure sensor on top of the tank , The sensor at the evap canister is not a sensor , it is a evap vent solenoid . The thing under the alternator is the purge soleniod . You would need to remove the fuel tank to replace the fuel pressure sensor . How to troubleshoot an EVAP Pressure Sensor problem P0452 GM

Posted on Apr 30, 2017

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Posted on Jan 02, 2017

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Location of evap purge valve solenoid on a 2004 chevy Colorado z71 4x4 3.5l looking from the front of truck


. .It's on the side of the engine under intake manifold in the middle between the starter and the alternator .

Evaporative Emission (EVAP) Canister Purge Solenoid
Left side of the engine below the intake in back of the alternator

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4 Answers

What does code PO453 mean


the evaporative emission system (EVAP) control system pressure sensor has sent high voltage to the ecm or engine control module and triggered this code either the purge valve located under the car by the gas tank has gone bad, or the charcoal canister has become gas soaked and is pressurizing from gas fumes, or the sensor or wires have shorted , there is also a secondary valve located und the cover of the intake that should also be checked for shorts that can trigger this code but usually it is the one under the car that goes out 9 out of 10 times it is from fuel being burped into the evap canister or charcoal canister from the gas tank which is caused from overfilling the tank or mid day heat of 90 or better with a full tank

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1 Answer

Where is the gas cap sensor in the 1998 buick lesabre?


If your problem is pressure when you release the gas cap it could be one of several problems. The first two are easy. A fuel pressure sensor on top of the charcoal canister under the computer and air filter on thew drivers side engine compartment. The next is the purge valve located on the front top of the engine under the cover. A hard line runs from the purge valve to the sensor on the charcoal canister.

The third is the most difficult. It is the fuel tank pressure sensor on top of the fuel tank. I believe you will need to drop or at least lower the fuel tank. Not an easy task. I have heard some models have an access plate in the trunk under the mat but mine did not. All are under $50.00 ea. and readily available at your local parts store or online. It is very important you get this fixed asap as it will build enough pressure to find a weak spot in the tank and rupture it. That happened to me.

While it is not ideal, you can temporarily loosen the gas cap to where it is just sitting in the filler tube when driving until you can fix it. Then have your check engine light reset.

May 29, 2014 | 1998 Buick LeSabre

1 Answer

Where is the vapor vent solenoid located. check engine light is on


it is located on a tray next to the fuel vapor storage carbon canister near the fuel tank under the truck.

Sep 30, 2010 | 2006 Chevrolet Colorado

1 Answer

Where is the location of the fuel canister on a 2004 chevy colorado


It is underneath the drivers side of the truck bolted to a bracket at the front of the fuel tank.

Dec 08, 2009 | 2004 Chevrolet Colorado

1 Answer

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Did you ever find a solution to this problem? My 2004 Colorado just started doing the exact same thing!

I can be reached at garyru21@juno.com

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1 Answer

Brake sensors


google it. 2004 Chevrolet Colorado brake sensor or brake diagram.

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