Question about 2000 Buick Park Avenue

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How can you tell if you need new gas cap

Check engine light is on

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2 things if you live near a Auto Zone they will check out the check engine light.(if you live near one) The way you will know it is there is no pressure when you take off the gas cap. if the cap is good there should be a realease of air. you wil lhear it
ck

Posted on Feb 14, 2012

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 74 Answers

SOURCE: 2007 gas cap light comes on then the ckeck engine

maybe they got a malfunctioning sensor it happens go back

Posted on Jun 18, 2009

airjer995
  • 5332 Answers

SOURCE: my check gas cap light is on but no check engine

The check gas cap light was in response to complaints of the check engine light being on for loose/missing gas caps. So now when the PCM sees a large EVAP leak the first thing it does is illuminate the check gas cap light (on models equipped with the light). Since it doesn't know if the gas cap is on or not it can have other issues like a vent solenoid stuck open which the PCM would be unable to distinguish between that and the gas cap left off.

There will still be a trouble code in the PCM for the EVAP system.

Posted on Oct 05, 2010

  • 1796 Answers

SOURCE: 2004 Buick Raineer check engine light on; gas cap

Hi!!

Check engine light comes on when the computer detects a malfunction in the emision control system, could be a loose or broken vacumm line, loose gas cap or a sensor.

Drive your vehicle to an AutoZone store, ask them to retreive the trouble codes from your computer memory, they will do that and a print out of the codes and their meaning. This a free service they provide for their customers.

Don't forget to rate this answer. Good Luck

Posted on Apr 27, 2010

Testimonial: "Thanks for quick and pin point reply that will save me money. I already had replaced gas cap from a previous episode."

c17hydro
  • 2984 Answers

SOURCE: Check engine light stays on

You need to have your engine fault codes read to know what to look for. That is why it is on. Go to almost any auto parts store like Schuck's/Kragan/Chief's Pep Boys/Auto Parts Plus/Auto Zone. They have a tool you can use or they will do it for you, FOR FREE.

This will let you know why you have the check engine light on.

Posted on Mar 25, 2009

SOURCE: ENGINE LIGHT IS ON. CODE

Lets start with how knowledgeable you are

You have an EVAP System issue,maybe

You asked if the gas cap is specific

You know that it is to some extent
Application Specific -but the parts store
would give you the correct one

Was the first code even related to a gas cap?

When you say I was told, you mean what?

A professional mechanic you asked a question,
took a guess to give you an answer?

Do you know how to test the solenoid your
referring to? If not take it to a repair shop &
let them Smoke Test it & actuate all the system
components with a scan tool.

Posted on May 26, 2011

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1 Answer

Hard to start after gitting gas. that is the only time it happens


You may need a new gas cap. The only way to check it is to replace it. They're pricey, so first look to see if check engine light is on. If it is, go to a chain store parts house and have the codes read.

There is a technical problem with some of the 08 evaporative emission control system. The code check will tell if you need the repair, about $85.00.

The check is free. A gas cap about $30. So go have the code history read and see what you truck is telling you.

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