Question about 2002 GMC Envoy

1 Answer

Engine code p440 - 2002 GMC Envoy

Posted by blair matthews on


1 Answer

Channy Pickett

  • Level 1:

    An expert who has achieved level 1.


    An expert that got 5 achievements.

    New Friend:

    An expert that has 1 follower.


    An expert who has answered 20 questions.

  • Contributor
  • 24 Answers

The code ur are getting on your envoy is a emiision problem first you could try a new gas cap its a known problem in setting this code ...hope this helps

Posted on Oct 12, 2013


Add Your Answer

Uploading: 0%


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



Related Questions:

2 Answers

Check Engine Light. I have p420 P440 and P446 codes

You need a Catalytic converter and possibly a Evap. cannister

Oct 04, 2014 | 2003 Toyota Corolla

1 Answer

Where is charcoal vapor cannister on 2001 toyota echo

under the rear of the vehicle under the trunk

Feb 25, 2013 | 2001 Toyota Echo

1 Answer

2001 pontiac montana 3.4 trouble code p440

thats a evap code should not turn the car off you are heaving some other issue

Dec 02, 2012 | Cars & Trucks

1 Answer

Engine code p0440 2001 camery

The P440 means that Evaporative Emission Control System.
car code scanner

Oct 23, 2012 | Toyota Cars & Trucks

1 Answer

What is engine code p440

This code is for an evap system large leak. Could be cause by something as simple as a gas cap or by a bit more complex stuck open vent solenoid. Make sure your gas cap o-ring isnt cracked(dry rotted) if it is replace it also make sure it is on tight. Here is some more info I found on the web.

Jun 27, 2012 | 1996 Chevrolet Blazer

1 Answer


I believe you mean resetting the Code. You can go to Autozone, Advance, or Oreilys and then can reset this for you, free. Sometimes you can just disconnect the NEG post of your battery and the computer will clear. But most people do not like resetting their clock or radio when you do this.

Jan 27, 2012 | Cars & Trucks

1 Answer

Message comes up P440

po440 is emission control system malfunction, Probable Causes:
a) Defective or loose fuel cap
b) EVAP Canister or hose cracked- not connected
c) Purge or vent solenoid defective
d) Vacuum leak at engine.

Jul 21, 2010 | 1999 Chevrolet Silverado 1500

Not finding what you are looking for?
2002 GMC Envoy Logo

Related Topics:

79 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts


Level 3 Expert

85239 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22485 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8984 Answers

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

Answer questions

Manuals & User Guides