Question about 2004 Chevrolet Tahoe

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Got a code p0446 off my 2004 z71 tahoe where do I find these vapor sensors

How can I check these to see which one it is

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Posted on Jan 02, 2017

  • 312 Answers

SOURCE: where is the drivers side

There are two crash sensors for that vehicle, they are both up under the front bumper near the radiator support and torsion bar. It is held in with a 10mm bolt and has a yellow connector on the harness. There is one on the driver side and one on the passenger.

There is also a sensor (Paasenger Presence System) located in the passenger seat that turns on and off the airbag or controls the amount of force it deploys with depending on the weight of the person sitting in the seat.

Each seat also has a seat belt sensor under it.

Posted on Aug 23, 2010

  • 426 Answers

SOURCE: I just replaced my plugs/wires on my 2004 z71, still random miss.

I would lean toward a dirty throttle body first.REcheck and make sure one of the wires is not locked in well om plugs. Ususlly from what I found a coil is going to cause to skip most of the time if it is bad.I would attempt fuel treatment and cleaning throttle body real well.

Posted on Oct 12, 2009

  • 1608 Answers

SOURCE: where are the oxygen sensors on my 2004 tahoe and installation

There are 4 o2 sensors.They are all on the exhaust system.There is one on the left side exhaust manifold pipe and one on the right exhaust manifold pipe.Then there is one in front of the catalytic converter and one in back of the converter.It would be better if you had the codes that they got because there can be other problems that can cause an o2 sensor to fail.Also I have never had all 4 sensors go bad at one time.You could have other problems.Vacuum leaks,plugged air filter,bad connections,or bad grounds.These vehicles are also good for intake gaskets being bad.Hope this helps.Good luck.

Posted on Jan 19, 2010

  • 870 Answers

SOURCE: Just purchased a 2004 Tahoe Z71. Check engine

Yes its drivable. and you can Scan it just at an Auto part store like auto zone/ Pep boy... for free. Good luck

Posted on Dec 24, 2010

  • 2428 Answers

SOURCE: i have 5 wires going

Well im not sure why you are asking this question . They are two differant systems the mas air flow and the idle air intake bolth run off a 5 volt referance voltage but are not related so to speak to each other as far as the same ref voltage the same ground as every thing else .The IAT MAP TP ECT and fuel pressure sensor are one side and the MAF EGR and the EVAP are on the other side but all on a common ground . Ex plain what you are trying to do and why you are trying to do it and mabey i can make your life a little easyer and what caused this problem

Posted on Apr 02, 2011

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1 Answer

Where is the speed sensor located on a 2004 Chevy Tahoe Z71.

Speed sensor for the ABS system or for the speedometer?

If the speedometer and it is four wheel drive than the speed sensor will be in the rear housing of the transfer case.

Sep 09, 2014 | 2004 Chevrolet Tahoe

1 Answer

Chevy tahoe code PO446 2000 TAHOE

Code 446

P0446 Chevrolet Description
The Powertrain Control Module (PCM) monitors the performance of the Evaporative Emission (EVAP) system by applying a predetermined level of vacuum to the EVAP system then monitors the vacuum decay rate.
Possible causes =
- Plugged vapor canister
- Faulty vent solenoid
- Pinched or blocked EVAP hose
- Faulty FTP sensor

Read more:

Sep 01, 2014 | Cars & Trucks

1 Answer

I have a 2007 z71 tahoe that dealership says needs to have to replace my throttle body sensor at it will cost me $750.00 or so to fix. Is that correct amount. Seems pretty high.

No it should't cost that much. Its just a sensor that unplugs and probably has 2 screws holding it in place. Go to Napa and buy one then pop the hood and look around until you find what looks like the part you just bought. Then replace it.

Apr 18, 2014 | Chevrolet Tahoe Cars & Trucks

1 Answer

2002 tahoe check engine light #8 misfire code

Fuel injectors only receive power on one wire. The other wire is grounded by the PCM. That's what fires the injector. If could be the PCM, but most of the time it's a cam or crank sensor.

Jun 27, 2017 | Chevrolet Tahoe Cars & Trucks

1 Answer

PO440 code on a 1999 chev tahoe

P0440 - Evaporative Emission Control System Malfunction
This indicates that a part of the EVAP control system is no longer fuctioning correctly. The EVAP system consists of many parts, including (but not limited to) the gas cap, fuel lines, carbon canister, purge valve, and other hoses. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.

Symptoms: You likely won't notice any drivability problems.

Causes: A code P0440 could mean one or more of the following has happened:
The gas cap is not installed or working properly
The purge solenoid has failed
The canister is plugged and not working properly

Possible Solutions: with a P0440 OBD-II trouble code, diagnosis can be tricky at times. Here are some things to try:
Remove and reinstall the gas cap, clear the code, and drive for a day and see if the codes come back.
Inspect the EVAP system for cuts/holes in tubes/hoses
Inspect for damaged or disconnected hoses around the Evap purge solenoid
Check and/or replace the sensor
Check and/or replace the purge valve
Have a professional use a smoke machine to detect leaks

Check it and keep us updated.

Aug 13, 2011 | 1999 Chevrolet Tahoe

2 Answers

Chevrolet 2005 Tahoe Gas cap issues

Have the cap pressure tested. Replace if need be.

Mar 16, 2010 | 2005 Chevrolet Tahoe

1 Answer

I have a 2002 Chevy Tahoe Z71. In the rear view

first always check your fuses then if you have a autozone take it there and they can tell you what the code is and if you want to try it yourself they will give you instructions and print outs of where and how to do your job

Jul 20, 2009 | 2003 Mitsubishi Outlander

2 Answers


This is a specialist job These things are very dangerous if you don't know what you are doing! Sounds like it has a fault Don't try playing with it !!!!!

Jul 10, 2009 | 2006 Chevrolet Tahoe

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