Main fuse block under hood I think.
SOURCE: location of fuse box/panel for 2004 yukon denali xl
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.
SOURCE: 2003 yukon denali---relay locate for blower
the relay is built into the speed resistor or motor control module ) depends if you have automative or manual heater controls. is automatic it will be motor control module and manual is the resistor module. these units are located beside the heate fan motor. the motor helps keeps the unit cool. just unbolt the module, unplug it and install new one. Just check to make sure the connector is good.. The heat created by the connection sometimes melts the power or ground leads (red or black) and if this is so you will need to replace the pin.
SOURCE: 2006 Yukon Denali, oil pressure gauge malfunction
Most likely the oil pressure sensor is bad. Its located in the very rear of engine on top of bell housing area.
SOURCE: How do I change the headlight bulb in my 2006 GMC
There will be two steel arms about 1/8" round facing eatch other that are snapped into plastic retainers.If you turn the arm 90Deg (twords the front of headlight)and pull up on them the head light assemblie will come out giving you access to the bulbs.May have to squeeze and turn or just turn .Then you can disconect the wire harness.Just be sure when installing the new bulb not to touch it.I use a paper towl to handle the new bulb.If you get any oils from you hands on it this will cause a hot spot on the bulb and burn it out prematurely.Well hope this helped.
SOURCE: would like to see a picture of fuse box location
Please let me know if you have more questions, and thanks for using FixYa.
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