GMC

GMC Troubleshooting Questions? Ask a Mechanic for Answers

Ask an Expert,
Get an Answer ASAP!

GMC

I have a 2008 GMC Sieraa 2500HD with a 6.0l. Code P0496 is

Customer Question
coming up with the check...
I have a 2008 GMC Sieraa 2500HD with a 6.0l. Code P0496 is coming up with the check engine light. How do I get the light off?
Submitted: 2 years ago.Category: GMC
Show More
Show Less
Ask Your Own GMC Question
Answered in 8 hours by:
1/4/2016
GMC Mechanic: Pete, GMC Mechanic replied 2 years ago
Pete
Pete, GMC Mechanic
Category: GMC
Satisfied Customers: 30,436
Experience: GM training and dealer tech for 14+ years. Diagnostics
Verified

My name is ***** ***** I am a professional here at Just Answer. I noticed that your question had not received a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.

In order to turn off the light the fault code needs diagnosed and repaired then a scan tool used to clear the fault code to then turn off the light.

Code P0496 indicates a fault with the EVAP fuel tank emissions system to where this is flow through the vapor system when the purge has not been activated.This can be caused by a faulty purge solenoid needing replaced (most common) or a fault with an incorrect reading fuel tank pressure sensor.This will have to be diagnosed/tested further to pinpoint and repair the cause here then the code cleared to turn off the light.

If more help is needed, use the reply tab to continue our conversation. If no further assistance is needed, kindly rate my service.You can rate at any time and we can continue to work on your question as this will not close out your question.Keep in mind in some cases it can be difficult to fully diagnose or help repair your vehicle without seeing it and I work on delivering the best possible answer from what I see to work with.

Thanks Pete

Ask Your Own GMC Question
Customer reply replied 2 years ago
What is the part number for a purge solenoid and what are the steps to replace it?
GMC Mechanic: Pete, GMC Mechanic replied 2 years ago

The part number is ***** is located on the drivers side of the intake on top of the fuel rail.It is clipped to the fuel rail and has one connector and two vent lines that need disconnected then it can be removed and replaced.

https://www.dropbox.com/s/aw62myvgdtqzw9q/purge-01-04.gif?dl=0

Let me know if you need anything else and feel free to rate my help here.

Thanks Pete

Ask Your Own GMC Question
Customer reply replied 2 years ago
Part number PV485 at autozone.com. Is this what I need?
GMC Mechanic: Pete, GMC Mechanic replied 2 years ago

It would be PV443 from Auto Zone.It is brought up in their web site as the Duralast Canister Purge valve.http://www.autozone.com/engine-management/canister-purge-valve/gmc/sierra-2500hd-4wd/2008/8-cylinders-k-6-0l-sfi?filterByKeyWord=purge+valve&fromString=search

Thanks Pete

Ask Your Own GMC Question
Ask Pete Your Own Question
Pete
Pete
Pete, GMC Mechanic
Category: GMC
Satisfied Customers: 30,436
30,436 Satisfied Customers
Experience: GM training and dealer tech for 14+ years. Diagnostics

Pete is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

Meet the Experts:

Gm Tech (Cam)

Gm Tech (Cam)

GMC Mechanic

1,696 satisfied customers

GM Grand Master Technician 2007. 14 year experience.

Gary

Gary

ASE Certified Technician

1,557 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

583 satisfied customers

16 years of experience

Ron Z.

Ron Z.

- GMC Tech -

259 satisfied customers

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

George H.

George H.

ASE MasterTechnician

227 satisfied customers

15+ Years ASE Master Technician with Level 1 Certification

Don - Mo Lurch

Don - Mo Lurch

ASE Certified Technician

218 satisfied customers

GM, GMC, Chevrolet Cert., Heavy Line Mech, Race Shop Owner, Mobile Electronics

< Previous | Next >

Related GMC Questions
Often stalls when braking. No the check engine light is not
No the check engine light is not on. Truck stalls when braking but starts right back up. … read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
My yukon denali has the service engine soon light on. 2002.
my yukon denali has the service engine soon light on … read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
03 envoy, 4.2 L engine, dealer replaced the thermostat
03 envoy, 4.2 L engine, dealer replaced the thermostat housing then told me that a freeze plug has blown out. does this block have freeze plugs? … read more
Todd M
Todd M
Owner
ASE Certification
1,476 satisfied customers
Check engine light comes on 2009 Acadia 84000 moles, checked
check engine light comes on 2009 Acadia 84000 moles, checked gas cap … read more
eauto
eauto
self employed
High School or GED
74 satisfied customers
WE HAVE A 2006 GMC WITH A 6.0 ENGINE THAT IS HARD TO START.
WE HAVE A 2006 GMC WITH A 6.0 ENGINE THAT IS HARD TO START. WE READ THE FUEL RAIL PRESSURE AND IT THE GAGE FLUTES 60LBS. AND HIGHER. THE ENGINE WILL NOT IDLE. … read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
Having problems with traction control. Check engine lite
having problems with traction control. Check engine lite comes, traction control problem in msg center and loss of engine pwr. … read more
Pete
Pete
GMC Mechanic
30,436 satisfied customers
I rebuilt my engine, unplug all connectors, plug all
I rebuilt my engine, unplug all connectors, plug all connectors back in, when I turn key to start, all dash lights come on but wont start … read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
4,393 satisfied customers
Random misfire engine ticking. Cut off a few days ago
Random misfire engine ticking JA: Where exactly do you think the noise is coming from? And how long has this been going on? Customer: Cut off a few days ago ticking is on drivers side JA: What is the … read more
Pete
Pete
GMC Mechanic
30,436 satisfied customers
I got a DEF warning with engine light as well.. Thought it
Hi. I got a DEF warning with engine light as well.. Thought it was a bit early since for the DEF warning since I refill the DEF at each oil change. I sensed there was some in there already. Anyway, I … read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
Engine will idle but will not accelerate. car goes dead when
engine will idle but will not accelerate. car goes dead when you try to take off. I have replaced fuel filter and throttle control valve. … read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
Check engine light is on. Message: engine reduced power
check engine light is on. Message : engine reduced power loss, gmc Yukon denali 2007 … read more
Ron Z.
Ron Z.
- GMC Tech -
Vocational, Technical or Trade Scho
259 satisfied customers
Battery saver light came on. Battery test with the engine
Battery saver light came on. Battery test with the engine off at 12.7 VDC, With the engine running at an idle 15.7 VDC. Trying to locate the issue … read more
Mechanic01
Mechanic01
1,645 satisfied customers
Jasper engine, no codes, loss of power...sounds like
jasper engine , no codes , loss of power...sounds like ignition timing...Hmmm … read more
Chris (aka-Moose)
Chris (aka-Moose)
GMC Technician
Vocational, Technical or Trade School
583 satisfied customers
06 envoy cranks but no start engine light is on and stays on
06 envoy cranks but no start engine light is on and stays on solid no security lights and fuel pump is on when key is turned to start cranclk speed … read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
Truck will not remote start and check engine light on.
Truck will not remote start and check engine light on. Advance Diagoned: Getting code P0674 GP cyl 4 issue, U0101 TCCM no comm, and code C0550 … read more
Pete
Pete
GMC Mechanic
30,436 satisfied customers
With the engine running an turn the headlight switch on the
with the engine running an turn the headlight switch on the engine goes into reduced power mode. If you pull the dimmer the engine dies. … read more
roy
roy
Associate Degree
3 satisfied customers
Creplacet the engine and the instrument cluster does not
creplacet the engine and the instrument cluster does not operate at all now … read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
Aveo 2009: replaced engine. Engine starts but shuts off with
Aveo 2009: replaced engine. Engine starts but shuts off with in 2 or 3 seconds. Any suggestions … read more
Jerry Newton
Jerry Newton
Vocational, Technical or Trade Scho
4,622 satisfied customers
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.

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.

Show MoreShow Less

Ask Your Question

x