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2004 Yukon Denali Evap purge canister & valve solenoid

Locating & replacing the emission Evap sensors


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EVAP Code P0449
Here is a description and how to diagnose EVAP code P0449

Replacing Vent Valve Solenoid & Purge Valve Solenoid (EVAP Valve) 2005 GMC Yukon
When you get a check engine light, your parts store can test it with a little electronic device - ask for the check engine light tester. They go by many names, but look for EVAP Valve or Vent Valve/solenoid & Purge Valve/solenoid. The one in the rear of the car, near the gas tank, is known as the "Vent Valve Solenoid Canister." The one in the engine compartment is called a " Purge Valve Solenoid." Replacing the one in the engine compartment did the trick. I'd start by replacing that one first then test it. Cost: $25.97 Vent Valve Canister (fuel tank one) $35.72 Purge Valve (engine compartment one) TOTAL: $61.69 GM Dealer quote: $281.00 I saved $219.31

Check Engine Light Diag EVAP Codes
This is a video of a 2006 GMC Sierra that had a check engine light & some evaporative emissions codes. I show how to diagnose the problem with a scan tool and the upgraded parts required to repair it. The codes in the PCM were P0449 & P0455. I repaired it with a procedure in GM TSB 02-06-04-0374 that was to repair a restricted EVAP vent path &/or code(s) P0446 / P0442. This problem could also result in a fuel tank that is hard to fill.

EVAP Purge Solenoid Testing
EVAP Purge Solenoid Testing

Automotive Evaporative Emissions - Part One
From www.autofixworld.com: Part One of a two-part video describes how onboard monitors test vehicle fuel containment systems for fuel vapor leaks. Three types are discussed: pressure test; vacuum test; and natural vacuum leak detection.

GM EVAP Vent Solenoid Testing
2002 Chevy Silverado 4.8L with a P0449 EVAP Vent Solenoid trouble code. For more info. see www.autocomputerstroubleshooting.com

EVAP System Operation
EVAP System Operation Amazon Printed Books https://www.createspace.com/3623936 Amazon Kindle Edition http://www.amazon.com/Automotive-Testing-Diagnostic-Strategies-ebook/dp/B00 52YFOCI/ref=sr_1_2?s=digital-text&ie=UTF8&qid=1360016628&sr=1-2&keywords=se nsor+testing%2C+mandy+concepcion Android APPs https://play.google.com/store/apps/details?id=com.app.book.AOTLVEWIWPXAXYGM Z&feature=search_result#?t=W251bGwsMSwxLDEsImNvbS5hcHAuYm9vay5BT1RMVkVXSVdQ WEFYWUdNWiJd Explain the operation of the EVAP system. The EVAP system is in charge of recovering the excess fuel vapors and re-introducing them into the engine. It isn't just an emission system. If it malfunctions is also has a huge effect on engine performance and certain components operation will be cancelled by the ECM if the EVAP system fails. Learn how they operate here and how to test. The OBD-II scanner or Scan-1 is used to diagnose these systems and evaluate the process. See how it works. *************************************************************************** *********** Amazon Printed-Books & Kindle: http://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias%3Dstripbooks&fiel d-keywords=mandy+concepcion Google Play Android APPs: https://play.google.com/store/search?q=mandy+concepcion&c=apps Amazon Video DVDs: http://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias%3Dmovies-tv&field -keywords=mandy+concepcion Barnes & Noble Nook: http://www.barnesandnoble.com/s/mandy-concepcion?keyword=mandy+concepcion&s tore=allproducts Apple iTunes iPad: http://itunes.apple.com/us/artist/mandy-concepcion/id449573393?mt=11

GM Fuel Tank Pressure Sensor Test
2002 Chevy Silverado fuel tank pressure sensor test. This procedure can be followed for testing MAP sensors or any other pressure sensor.

Finding Engine Vacuum Leaks With A Cigar
Scotty Kilmer, mechanic for the last 46 years, shows how you can find engine vacuum leaks in your vehicle using cigar smoke. It really works as well as a thousand dollar smoke machine. And, If you like my car help, be sure to watch my live car talk show every Saturday morning at 10 AM CST on YouTube. I answer your car questions LIVE there. Just check it out at https://www.youtube.com/watch?v=VognjkYaMjg&list=UUuxpxCCevIlF-k-K5YU8XPA&f eature=c4-overview . And remember, every TUESDAY I upload a new video, so don't miss them.

Here's what's in a catalytic Converter. Here's how they work.
You can get a non contact Thermometer from Amazon here to test to see if your cat is working. http://www.amazon.com/gp/product/B006V4WNYU?ie=UTF8&camp=1789&creativeASIN= B006V4WNYU&linkCode=xm2&tag=httpwwwyou00f-20 What's in a catalytic converter? How do they work? Here's what's in a catalytic Converter. Here's how they work. Read about Tom Ogle here http://fuel-efficient-vehicles.org/energy-news/?page_id=787 or here: http://www.rexresearch.com/ogle/1ogle.htm or here: http://www.deathofagasguzzler.com/profiles/blogs/tom-ogle-160-mpg-by-a-high or here: http://askville.amazon.com/GOOGLE-TOM-OGLE-1973-SHELL-MILEAGE-MARATHON/Answ erViewer.do?requestId=10159124 Here's some info about Catalytic Converters http://www.bearriverconverters.com/data/CatOpp.pdf

Getting Your Car To Pass Emissions Testing
Scotty Kilmer, mechanic for the last 46 years, shows how you can get your car to pass the yearly emissions testing that's done on your car. Easy do it yourself things that can save you a bundle. And, If you like my car help, be sure to watch my live car talk show every Saturday morning at 10 AM CST on YouTube. I answer your car questions LIVE there. Just check it out at https://www.youtube.com/watch?v=VognjkYaMjg&list=UUuxpxCCevIlF-k-K5YU8XPA&f eature=c4-overview . And remember, every TUESDAY I upload a new video, so don't miss them.

Evaporative Emissions Check Engine Light
A video that may help others to pass an MVD Emissions inspection. The video contains information about OBD2 data codes and explains in part, the evaporative emissions system in today's automobile

How to Fix A Check Engine Light : P0455 Emissions Purge Valve Replacement
A check engine light can be caused by many different problems. Fortunately the ECM will generate and store a code when a component fails or near failure. This points us in what direction the issue is and guides on the diagnostic process. The automobile consist of: Powertrain: 1. Engine: • Fuel System: Purpose is to deliver fuel to the engine. It consists of the fuel tank, pump, gauge/sensor, filter, pressure regulator and injectors. • Air Intake System: Purpose is to clean and direct outside air into the engine. It consist of air filter, ducts, air plenum and intake manifold. • Exhaust System: Purpose is to direct Exhaust gasses out of combustion out of engine. It consists of the Exhaust manifold, converters, pipes and mufflers. • Cooling System: Purpose is to remove excess heat from the engine. It consists of water pump, hoses, radiator, thermostat, cooling fan and coolant recovery tank. Also the oil system serves as a cooling system as well as a lubricating system. It consist of oil pump, pan, filter and cooler. Drivetrain: 1. Clutch: Purpose is to connect the engine and transmission together. It consists of clutch drive disc, driven disc, release bearing, clutch fork, cable, slave cylinder, master cylinder. There are three types of clutch systems: mechanical, cable and hydraulic. 2. Transmission: Purpose is to match engine speed to road speed. Two types used are manual or automatic. These consist of gears, linkages, cables and converters for automatics. A manual is connected to the clutch by a flywheel and automatic by a flexplate. 3. Driveshaft: Purpose is to connect the transmission to the rear axle. It consists of a slip yoke, shaft and universal joints. 4. Rear axle differential: Purpose is to change the angle of motion from engine to the wheels. It also divides torque between the wheels. It consists of a ring and pinion gear, carrier, bearings, crush sleeve and axle shafts. 5. Wheels/Tires: Purpose is to provide traction to the road as well as carry the weight of the vehicle. Vehicle Control Systems: 1. Brakes: Purpose is to slow and stop the vehicle. It consists of master cylinder, brake Booster (vacuum or hydraulic), calipers, drums, pads and rotors. 2. Steering: Purpose is to direct vehicle in the required direction. Consists of steering gear (rack & pinion), steering wheel, column, inner/outer tie rods, pump, reservoir, hoses and pipes. 3. Suspension: Purpose is to provide stability and handling while also providing comfort to the ride. Consists of shocks, struts, sway bars, end links, springs, trailing arms and bushings. Comfort System: 1: Heating Ventilation Air Conditioning (HVAC): Heats and cools interior air to passenger comfort. Also circulates outside and inside air. • Air Conditioning: Consist of condenser, compressor, accumulator (receiver/dryer) orifice, expansion valve, hoses, evaporator, controls, actuators and modules. • Heating: Consists of heater core, valves, hoses and switches. Electrical Systems: 1. Power Generation: Creates electrical power to run all the electrical systems. Consists of the alternator. 2. Power storage: Stores unused power to start the car and supply voltage to the alternator to create more electricity. • Both systems consist of wiring, harnesses, fuse, relays and modules.

Wells EVAP Training with Sgt. Tech. P0440, P0441, P0442 etc.
http://www.wellsve.com/ This video demonstrates how a typical EVAP system functions. P0440, P0441, P0442, P0456, P0457, P0455, P0443, P0446, P0449, P0450, P0451, P0452, P0453, P0496 trouble codes with explanations and possible causes. Why Wells fuel tank pressure sensors are rated the best. "The information presented in this program is based on a specific diagnostic case and might not directly apply to the vehicle you are repairing. We do not represent or warrant that the information presented is complete or error free. Please take all safety precautions. We disclaim any and all liability for losses, injuries or damages in connection with your repair."

2003 GMC Yukon AC Compressor and Accumulator Repair Part 1: AC Compressor
http://www.apdty.com/ Click the above link to find the Accumulator for your vehicle. In this video we'll show you how to remove the AC compressor, accumulator, and orifice tube in order to replace them.

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2004 GMC Yukon Denali: 12.540 @ 105.790
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2007 GMC Yukon Denali: 15.010 @ 93.410


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