Question about 2003 Chevrolet Silverado 1500

2 Answers

The check engine light is on and this seems to have no effect on performance, is it the gas vapot canister?

Posted by on


2 Answers

Check lights have been with us for some 30 years,
so I guess your not into why

Have you checked to see if you have any codes?

Code related issues get fixed first

As far as an EVAP System problem you
asked about, we have no codes & you still
need a repair shop to diagnose the issue,
what ever it may be.

You will only have performance issues if you
have a large leak & only when the purge valve
is commanded open to draw in fuel vapor from
the tank to the engine.

Posted on May 26, 2011

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Master
  • 4,399 Answers

Thanks for choosing FixYa and welcome.

Posted on May 26, 2011

  • Richard Hale
    Richard Hale May 26, 2011

    To be honest, it is hard to tell right now. There are many things that can cause your check engine light to come on. When it does come on, this means the computer has detected a problem with the vehicle. Every car has this system. Anytime it is on, you can usually get a code number off the computer scan. The hookup is under the dash in most cars. You can buy a cheap one for around 50 dollars at most auto part stores. If you do buy one, you may need to find what each code means. If you don't own one or you can't get to one, you can take it to Autozone or Advanced Auto Parts to get your vehicle scanned. Most places do not charge for the scan. Autozone and Advanced Auto Parts do not charge when your check engine light is on. They will be able to scan it for you and give you the codes. They will let you know what it says and what parts you will need as well. if you ask. If your check engine light is flashing, this means there may be internal engine failure. If this is your case, get it scanned as soon as possible. The longer you go with the light on, the greater the chance you have to make the problem worse. Some of the newer vehicles has this system already built in. You will need to know sequence though, to make the code appear.



1 Suggested Answer

  • 2 Answers

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

a 6ya Mechanic 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 repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

There is a gas smell every time you start the vehicle. What could that be?

ANy check engine light on? How is gas mileage? Any poor driving performance issues? Has fuel vapour canister under hood been replaced/checked?

Feb 28, 2014 | 1998 Plymouth Voyager

1 Answer

Emissions Code

Error Code: P0441
Fault Location:
Evaporative Emission (EVAP) System - Incorrect Flow Detected
Possible Cause:
Malfunction Indicator Lamp (MIL) active.
- Purge control VSV connector disconnected.
- Evaporative Emission (EVAP) Canister Purge Regulator Valve is faulty/jammed.
- Evaporative Emission (EVAP) Canister Purge Solenoid Valve faulty/jammed.
- Evaporative Emission (EVAP) Canister Sealing faulty.
- Pipes between Tank Breathing and Throttle Body leaky/blocked.
- Hose connection(s).
- Intake leak.
- Check Evaporative Emission (EVAP) Canister Purge Regulator Valve.
- Perform Output Test.
- Check Evaporative Emission (EVAP) Canister Purge Solenoid Valve.
- Check Evaporative Emission (EVAP) Canister.
- Perform Basic Setting.
- Check Pipes between Tank Breathing and Throttle Body.

Jan 10, 2014 | Toyota Cars & Trucks

1 Answer

I had blinking vsc code and check engin light on. Took it to a dealer who ran diagnotic. Dealer said gas cap has failed and new charcoal canister is needed. Since the high cost of latter, I simply...

Don't worry about that light, if performance and fuel economy is good. The light is still a fault from the evaporative canister.. It should not affect performance. Just make sure the fuel cap is snug. Just perform The ODBII scan periodically to catch any future problems. The vacume diaphragm for canister purge should be unplugged and the vacume hose plugged. This will avoid engine from sucking fuel into the engine due to a ruptured diaphragm in the canister

May 19, 2017 | 2009 Toyota Corolla

1 Answer

Where is the purge canister on 03 s10

The canister is usually mounted on one of the inner fenders. Sometimes it is under the bed near the gas tank.
If the hose is disconnected from the canister the check engine light should be on and a code in the computer for the EVAP system.

Sep 09, 2012 | Chevrolet S 10 Cars & Trucks

3 Answers

I have 2000 ford contour my engine light came on i took my car and got a reading which said failed canister vent solenoid. what does that mean. Is it serious

The solenoid is for an emissions device called an evaporative loss canister. It would probably not affect how the engine performs but it would have to be replaced to pass a smog test.

Apr 29, 2011 | 2000 Ford Contour

1 Answer

Evap large leak detected. troubleshoot code: PO455 . ECM has detected a large leak in the evap system during a symtem monitor test. Engine light has not come off , after new fuel cap, and fuel filter...

the charcoal canister that absorbs the fumes is in engine area-u see a hose attached to it ina corner--inspect hose rite down to the gas tank as well as all parts of system--itz an EPA thing and doesnt effect car performance

Oct 05, 2010 | 2006 Chevrolet Equinox

2 Answers

Check engine light -- daewoo disgnostic trouble code p0442..what is it and is a major/minor problem --performed visual inspec. on fuel cap, evap hoses and canister..all sign of leak noticed when...

Okay no leaks so this means the vent valve is closing, how did you get valve to close? if there are no leaks and vent valve is closing and sealed when you smoke tested it then i would say to replace the purge valve, this is easy to change and not costly, just a dealer part or maybe you can find on the web, hope this helps.

Sep 14, 2010 | 1999 Daewoo Leganza

2 Answers

Check Engine lite comes on Code PO440

16824/P0440/001088 - EVAP Emission Control Sys: Malfunction Possible Symptoms
  • Malfunction Indicator Light (MIL) active
Possible Causes
  • Evaporative Emission (EVAP) System leaking
  • Evaporative Emission (EVAP) Canister Purge Regulator Valve (N80) faulty
  • Evaporative Emission (EVAP) Canister Purge Solenoid Valve (N115) faulty
Possible Solutions
  • Check Evaporative Emission (EVAP) System Sealing
  • Check Evaporative Emission (EVAP) Canister Purge Regulator Valve (N80)
  • Check Evaporative Emission (EVAP) Canister Purge Solenoid Valve (N115)

Jun 17, 2010 | 2000 Volkswagen Beetle

1 Answer

Check Engine light on AGAIN!

I have an '01 Sable that posted a Check Engine light and the problem turned out to be a Mass Airflow Sensor.

Feb 17, 2009 | 2001 Mercury Sable

Not finding what you are looking for?
Cars & Trucks Logo

69 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts


Level 3 Expert

77194 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22265 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

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

Answer questions

Manuals & User Guides