Top 10 2004 GMC Yukon Questions & Answers

There are 2 fuse panels in the Denali.
One is a panel on the drivers side, its on the dash but facing the door.

The ohter is under the dash and above the pedals, this one is much tougher to access.

Your Owner's Manual should tell you where the fuses are that you need to access.

The vehicle needs to be put on a scanner and checked. This system is too complex to check once you have checked the fuses are replaced or OK. Do your best to make a friend at the dealership and see if a tech is willing to give it a quick scan. The trouble codes will then point you to the problem. Only a dealer scanner will work. With the trouble code / problem diagnosis (i.e.C0660 exhaust valve circuit malfunction) we can help further.

disconnect ur positive battery cable. make sure not to set alarm with remote. let set for about 5 minutes, this happened to my 2003 gmc yukon xl and it actually worked

There is no "freebie" for this one, however, if you go to www.alldata.com it's 25 or 26 for a year and will give you everything from bolts, nuts, wires, common problems, Technical Service Bullitins from GMC and specific to your vehicle. I use it for my Denali and it's well worth the money! It will show you every ground, every power, cpu, light bulb, and how to pull it apart and put it back together. Hope this helps

normally the fuel filter on the yukon is located under the drivers door along the inside of the frame

Hi welcom to fixya. A defective knock sensor may cause engine detonation or reduced spark advance and fuel economy. When a knock sensor is removed and replaced, the sensor must be tightened to its specified torque. If the knock sensor is installed tighter than it should be, it may become too sensitive and provide an excessively high voltage signal, resulting in more spark ****** than required. When the knock sensor is installed looser than it should be, the knock sensor signal will be lower than normal, resulting in engine detonation.
To replace the knock sensor:

• Disconnect the knock sensor wiring connector.
• Then, unscrew the sensor.
• Remove the knock sensor.
• Reverse the procedures to install the part.
• 15 ft.lbs.torque
• hope this helps.Thank You for using fixya..iluv2fish.. Ray..

EASY FIX-- your blend door actuator has a grease drip inside on a sensor. It's a easy fix. I just fixed mine in 20 minutes. See how to here==> http://www.tahoeyukonforum.com/forum/showthread.php?t=17741

The underhood fuse block in the engine compartment on the driver's side of the vehicle near the battery. Lift the cover for access to the fuse/relay block. To remove fuses, hold the end of the fuse between your thumb and index finger and pull straight out.



You have the label...
* MBEC called Mid Bussed Electrical Center: Power Feed, Front Seats, Right Doors
* BLOWER for Front Climate Control Fan

Check it, its possible that this are blown.

The mass air flow sensor is in the main air duct slightly past the air box where the air filter it located Its clamped inside the duct so all of the air that comes through the duct from the air box has to pass through it. there is not fuse for it This sensor measures the amount of air entering the engine and sends a voltage signal to the VCM. The signal voltage increases when the amount of air passing through it increases . This gives the VCM information required to control the fuel delivery spark advance and EGR flow

Check the motor on the transfer case