Question about 2005 Chevrolet Uplander LS

2 Answers

My engine light is on and the code is P0496, I have trouble starting my vehicle after fueling

The problem that keeps coming up is that every time I fuel up, it does not want to start, it takes me 3 or 4 time to get it to keep running, after that I have no problems untill I fuel up again. The engine light is on also, and the code for that is P0496

Posted by on

Ad

2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Governor:

    An expert whose answer got voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 48 Answers

Sounds like the purge solenoid valve.
Check out this website for more details. If it is the valve, the replacement will cost around $20 at any auto parts store.
http://www.obd-codes.com/p0496


Posted on May 15, 2014

Ad
  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Master:

    An expert who has achieved Level 3.

  • Chevrolet Master
  • 378 Answers

The most likely causes are as follows.

- Faulty EVAP canister vent valve
- Faulty EVAP canister pruge valve
- Plugged EVAP canister condition
- Faulty EVAP pressure sensor

this link will explain the system to you.

http://engine-codes.com/p0496_chevrolet.html

Posted on May 25, 2014

Ad

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

  • 239 Answers

SOURCE: vehicle just keeps cranking wont start.

Make sure that your fuel presure is up to at least 60 psi if not that could be your problem. If not, make sure you are getting spark, if not could be your Crank sensor or ingniton module ECM. Usually if your Engine control module wouldn't be bad because of your fuel pump is working, but may not be putting out the proper pressure for the fuel system. Fuel Pumps are a Problem with that year..

Posted on Jun 10, 2008

  • 371 Answers

SOURCE: 2000 blazer 4.3 hard to start (fuel problem)

Do you have the fuel tester hooked the in the overgrown air valve on the fuel rail in the back of the engine? Or do you have the fuel line unhooked in the back and hooked to the pressure pump? You want the fuel pressure to be in that 60 lb range so if you are hooked into the pressure valve on the fuel rail allowing fuel to go through, then I am betting it is the fuel pressure regulator. To get to that, you have to take the throttle body off and take the plastic plenum that covers the injector packs. On the back of the mount where your six pack of injectors are sits the pressure regulator. If it is faulty then it is dumping fuel instead of holding the pressure like it should.
Get a Chilton or Clymer manual and it shows you in pretty good detail how to fix it. I've done it to my 98 S10 with the same engine.

If you unhooked the fuel line so you are losing pressure from the line back to the pump then I would say your pump is letting fuel back to the tank when it shuts off. My money is on the first possibility though.

Good luck

Posted on Mar 28, 2009

blueextc3221
  • 15935 Answers

SOURCE: code p1133

GM p1133 = Heated Oxygen Sensor (HO2S) Insufficient Switching Bank 1 Sensor 1
more than likely you have a bad oxygen sensor...the primary oxygen sensor in the exhaust BEFORE the catalytic converter.

Thanks for using FixYa - a FixYa rating is appreciated for taking the time to answer your FREE question.

Posted on Mar 30, 2009

  • 1118 Answers

SOURCE: cannot get 1987 chevy van 20 to keep running... stalls out

Best do a fuel pressure test. Should have chg. fuel filter from the get go. The only other filter is on the end of the fuel pump in tank. Bad gas and dirty gas will plug up fuel filter, hense burn pump up.

Posted on Apr 11, 2009

  • 731 Answers

SOURCE: check engine light stays on the code that keeps

Could be a EGR vacuum issue or temp sensor issue

Common Problems That Trigger the P0401 Code

  • Restriction in the EGR passages, usually caused by carbon buildup
  • Lack of a proper vacuum signal to the EGR Valve from EGR Vacuum Solenoid
  • EGR Vacuum Modulator is defective
  • EGR Temperature Sensor is defective
  • EGR Valve is defective
This is from:
http://repairpal.com/OBD-II-Code-P0401-Ford

Posted on Jan 31, 2011

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

My 2007 isuzu i290 engine light keeps coming on. I already changed spark plugs and cleaned carburator


The check engine light comes on when your vehicle has a problem with the OBD 2 - onboard diagnostic's system . (emissions) When the light is on there are DTC'S - diagnostic trouble codes stored in the PCM - engine computer ! Changing the spark plug's may or may not do anything . There are a number of sensors that send signals to the PCM so PCM knows how much fuel to add to the engine . You need to take your vehicle to a qualified repair shop an have it check out .

Trouble Codes Check Engine Light On

Oct 07, 2016 | 2007 Isuzu I 290

1 Answer

4.2 ltr 6. What are the probable causes of DTCs P0170 and P0496?


Tahoe purge valve replacement code p0496 - YouTube

? 1:42
www.youtube.com/watch?v=Pb1EMESmBfE
Jan 31, 2015 - Uploaded by BukThea
Code P0496. Engine light comes on. Video shows of a replacement of a purge valve solenoid on a 2007 tahoe ...

Sep 30, 2015 | 2006 GMC Envoy

1 Answer

P0496 code


Hi there:
DTC P0496 - EVAP (evaporative emission) Flow During A Non-Purge Condition


The P0496 DTC code is a generic code which applies to all vehicle makes. A quick search on the 'net shows that this code seems to be more common with GM (Chevy, Pontiac, etc.) vehicles. In Acura, Honda, Hyundai, Kia, and Mazda vehicles, this code is described "EVAP system high purge flow" which is the same thing.


This DTC checks for undesired intake vacuum flow to the EVAP system. The control module seals the EVAP system by commanding the EVAP canister purge solenoid valve OFF and the EVAP canister vent solenoid valve ON. The control module monitors the fuel tank pressure (FTP) sensor to determine if a vacuum is being drawn on the EVAP system

If vacuum in the EVAP system is more than a predetermined value within a predetermined time, this code is set and the MIL (malfunction indicator lamp) is illuminated.



Symptoms of a P0496 DTC will include MIL illumination, and most likely no other noticeable symptoms. Some may experience a hard start / crank condition. In some cases the engine may run rich which may not detected, but can cause damage long-term (think: catalytic converter damage).

Potential causes of a P0496 EVAP code include:

  • Faulty purge or vent solenod/valve
  • Plugged EVAP canister
  • Failed EVAP / fuel pressure sensor
  • Poor electrical connection
  • Short electrical circuit condition
  • (Hyundai, Isuzu)
  • Faulty canister purge valve
  • Blocked vapor canister
  • Faulty vent solenoid
  • Leaking EVAP system hose (Hyundai)
  • Faulty purge flow sensor (Kia, Mazda)

Possible Solutions

The most common fix for this DTC is to replace the purge solenoid valve. However, be sure to do a proper diagnosis before replacing parts!

Ideally you would use an advanced scan tool, with the ignition on and engine off, you seal the EVAP system using the Seal/Purge function. Then, watch the fuel tank pressure sensor reading when you turn the purge off. If the pressure value is higher than the normal range set by the manufacturer, replace the EVAP canister purge solenoid valve. Refer to a model-specific repair guide for the proper specification.


If you don't have access to the scan tool, you could always disconnect the vacuum line at the purge valve going back to the charcoal canister. Unplug the electrical connector on the purge valve, start the engine, then put your finger on the valve where you disconnected the line. If you can feel vacuum there, the purge solenoid valve is faulty and needs to be replaced. Alternately, you could simply remove the purge solenoid valve and blow into it. It is normally closed, so if air goes through then you need to replace it.


If the purge valve checks out good, either the problem with the valve is intermittent or there is a problem with the fuel tank pressure sensor. To test the fuel tank pressure sensor you will need to have a high end scan tool to monitor the tank pressure with the gas cap removed. If the sensor shows vacuum with the gas cap removed, there is a problem with the fuel tank pressure sensor.


Here is a picture of one purge solenoid valve. Yours may look similar or different, consult a factory service guide or your local vehicle dealership for more details.


Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Aug 22, 2012 | Cars & Trucks

1 Answer

What is a p0496 error on a 2006 buick lacrosse cxs


The P0496 DTC code is a generic code which applies to all vehicle makes. A quick search on the 'net shows that this code seems to be more common with GM (Chevy, Pontiac, etc.) vehicles. In Acura, Honda, Hyundai, Kia, and Mazda vehicles, this code is described "EVAP system high purge flow" which is the same thing.
try use maxiscan us703 to clear the fault code.

Jul 01, 2012 | 2006 Buick LaCrosse CXS

1 Answer

2005 Chevy Equinox with a check engine light. Emissions code P0496. What is the solution?


Check for loose fuel tank cap tighten then reset computer and see if code comes back.

May 02, 2011 | 2005 Chevrolet Equinox

1 Answer

Engine light comes oncodepo496


Code P0496 is defined as "Evaporative Emission (EVAP) System Flow During Non-Purge"

If the Evap purge valve does not seal properly, fuel vapors could enter the engine at an undesired timing causing drivability concerns. The control module tests for this by commanding the EVAP purge valve OFF closed and vent valve ON closed, sealing the system, and monitoring the FTP for an increase in vacuum. If the control module detects that Evap system vacuum increases above a calibrated value, DTC P0496 will be set.

This could be a sign that your purge valve is intermittently failing so you might want to get it checked out before it turns into a bigger problem that affects the drivability of your truck.

Apr 17, 2011 | 1999 Chevrolet Silverado 1500

1 Answer

My GMC 2003 Envoy failed smog test because of "the


Hello
Does the light ever come on while you are driving the vehicle? It is possible that the vehicle does not trigger the code on the key cycle when vehicle is connected to the OBDII scan tool (a cycle is the time from when a vehicle is started to the time the vehicle is turned off) you should however most of the time be able to check a vehicles trouble code history to see what may be turning the light on
Good luck
Chris

Mar 22, 2011 | 2003 GMC Envoy

1 Answer

My engine light continues to turn on, I was told the code is P0496 that shows when they connect the computer. They tell me it could be the gas cap or the emission valve. I would like to know wher is the...


P0496 is not a gas cap, problem is with the purge vent solenoid (on intake manif) or purge vent valve (under car by fuel tank). Most likely the vent valve. Depending on your vehicle/VIN you may be eligible for the 10 year/120k mile warranty Caddy just came out with but is keeping a tight lip on. See bulletin #09205 dated 3-11-2010. Good luck with this!!

Dec 07, 2010 | 2006 Cadillac CTS

1 Answer

2001 hyundai accent. hard to start when engine is cold. has new air & fuel filter, and plugs. starts fine when at operating temperature.


Without actually looking/diagnosing your vehicle, the problem could be just about anything (fuel pressure, out of time, vacuum leak, defective sensor (i.e., MAP, MAF, ECT, IAT, CKP, etc.), Does the Check Engine light come ON when this happens? Whenever the "Check Engine" light comes on, there is always a DTC (Diagnostic Trouble Code) stored in the ECM (Engine Control Module). You'll need an OBDII (On-Board-Diagnostics) scanner to retrieve any codes recorded/set in ECM. Once you do this and let us know what, if any codes are set, then we can go from there.

Jun 27, 2009 | 2001 Hyundai Accent

1 Answer

Check engine light came on my 2006 Kia Rio : diagnostic code p0496. What is this and what does it mean?


that code definition is "Evap high purge flow fault". It means you may have a problem with the evaporative system. this system routes fuel fumes back to the fuel tank. If you want to try and clear this code, find the radio code for your car and then disconnect the battery for 30 seconds. Reconnect the battery and the check engine light should be out. You will then need the radio code to reset your car stereo. the check engine light may stay off if the condition was a transient one. If not, the light will come back on after you drive the car two drive cycles. That is: two starts, warm ups and shut downs. If the light returns, have a mechanic check it out.

Jan 21, 2009 | 2006 Kia Rio

Not finding what you are looking for?
2005 Chevrolet Uplander LS Logo

462 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

76649 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8522 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...