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2003 GMC Envoy SLE XL 6cyl 4.2L with a P0440 code. Code
Code P0440 and yes I tried resetting it but it comes back … read more
Eric
Eric
Automotive Repair Shop Manager
N/A
35,444 satisfied customers
I have a EVAP code P0449 I replace the purge solenoid on the
I have a EVAP code P0449 I replace the purge solenoid on the engine and it is still showing the same code … read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
I have a 2005 gmc xl denali thats really difficult to fuel
i have a 2005 gmc xl denali thats really difficult to fuel up. it takes 20 mins to fill up. gas pumps stop every 10cent to $1.50. its frusstrating. i hate putting gas in it. cel is on pull code for ga… read more
eauto
eauto
self employed
High School or GED
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2003 yukon denali stalls in traffic. We have replaced the
2003 yukon denali stalls in traffic. We have replaced the throttle body, IAC, fuel pump. It quit stalling when we left the gas cap off. It started stalling in traffic again today. what could be the pr… read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
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I have a 2005 GMC Yukon and I never got a error code but
I have a 2005 GMC Yukon and I never got a error code but when filling up with gas the pump shuts off and it will only let you put gas in very slowly while still shutting off frequently. I replaced the… read more
eauto
eauto
self employed
High School or GED
74 satisfied customers
I had my Canister Solenoid replaced on my GMC Yukon Denali
I had my Canister Solenoid replaced on my GMC Yukon Denali SUV recently. Its a 2005 with 131,000 miles. Now my engine light is on and I stopped at Auto Zone and they scaned the code and says its the C… read more
Pete
Pete
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Vocational, Technical or Trade Scho
138 satisfied customers
You helped me last week with my 2004 GMC YUKON DENALI 6.0,
I'm Dan. You helped me last week with my 2004 GMC YUKON DENALI 6.0, O2 sensor. I believe I successfully wired the sensor, per your directions, and I at 1st I did get the P041 code reset. I drove the t… read more
kalamykid
kalamykid
Pactor automotive
Vocational, Technical or Trade Scho
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Envoy denali 06 p0449 replaced the purge solenoid how do i
Envoy denali 06 p0449 replaced the purge solenoid how do i reset the code,also if it is not that wher is the vent valve located … read more
mike switzer
mike switzer
728 satisfied customers
GMC Yukon: I had my 2005 at Auto Zone on the machine
I had my 2005 at Auto Zone on the machine for the check engine light is on. Gave me error code PO455 Evaporative Emission ( EVAP) System Large Leak Detected, what does that mean?… read more
Randall
Randall
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Vocational, Technical or Trade Scho
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my 2004 gmc yukon denali is showing codes P0449 & P0455 and
my 2004 gmc yukon denali is showing codes P0449 & P0455 and I've replaced the evap solenoid valve and purge valve but still throwing codes… read more
JFN1
JFN1
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Vocational, Technical or Trade Scho
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GM GMC: Can you tell me the location of the Vapor Canister
Can you tell me the location of the Vapor Canister Vent Solenoid and the Evaporative Emission Canister Purge Solenoid Valve on a 2008 GMC Yukon Denali?… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
GMC Yukon: I have a 2005 GMC Yukon, and getting a P0446 code
I have a 2005 GMC Yukon, and getting a P0446 code with the Service Engine Soon Light on. Is this something I could fix myself? If so, can you tell me where the components are that need replaced?… read more
Ron Z.
Ron Z.
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285 satisfied customers
GMC Yukon 4x2: 2005 yukon getting check engine light to tighten
2005 yukon getting check engine light to tighten gas cap- replaced cap,code says emission leak, gas guage erratic at times also replaced stepper motors in dash… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
GMC Yukon XL 2500 SLT: 2011 Yukon XL, 2500. Evap canister keeps
2011 Yukon XL, 2500. Evap canister keeps getting raw fuel to it, via the vent line, only when filling up with gas...thus immediately after fill up, when the purge solenoid opens it pulls the raw fuel … read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
gmc Yukon SLT: I have a 2004 GMC Yukon XL 2500 with the 8.1
I have a 2004 GMC Yukon XL 2500 with the 8.1 V-8. I'm getting engine code p0496 and hard starts after filling the tank. I plan on replacing the evap vent valve and the purge solenoid valve to solve th… read more
supermechanic
supermechanic
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GMC Sierra 1500: does 2001 gmc sierra 1500 built in canada
does 2001 gmc sierra 1500 built in canada have a evap. vent solenoid. cant find it on my truck? have a PO449 code and all the diagrams online dont look the same as this truck… read more
goodwrench9124
goodwrench9124
Lead Tech/ Shop Leader
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2,571 satisfied customers
GMC HD2500: I have a 2004 GMC hd 2500 Quad cab pick-up. The
I have a 2004 GMC hd 2500 Quad cab pick-up. The check engine light is on and the dash read out says it is a loose gas cap. i replaced the cap, cleared the code and it came back on within 2 days. Where… read more
Dave Nova
Dave Nova
GMC Technician
Associate Degree
929 satisfied customers
GMC Yukon XL 1500: 2005 GMC Yukon XL 150,000K 5.3L, very clean
2005 GMC Yukon XL 150,000K 5.3L, very clean truck. normal maintenance always done. check engine light on for P0449 evap vent control circuit. clear the code and it will come back on in two trips. I be… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,823 satisfied customers
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Meet the Experts:

Gm Tech (Cam)

Gm Tech (Cam)

GMC Mechanic

1,823 satisfied customers

GM Grand Master Technician 2007. 14 year experience.

Gary

Gary

ASE Certified Technician

1,589 satisfied customers

GCM master tech over 25 years

Dave Nova

Dave Nova

GMC Technician

929 satisfied customers

ASE Master Certification. GM World Class Certification

Chris (aka-Moose)

Chris (aka-Moose)

GMC Technician

675 satisfied customers

16 years of experience

Ron Z.

Ron Z.

- GMC Tech -

285 satisfied customers

18+yrs experience. State Inspector & GMC Diagnostics/Repair

JFN1

JFN1

ASE Certified Technician

272 satisfied customers

GM Master Technician

George H.

George H.

ASE MasterTechnician

230 satisfied customers

15+ Years ASE Master Technician with Level 1 Certification

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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