Where is the fuse box for a 2001 Yukon Denali?

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: rear seat fuse box in 7 seater 2006 GMC envoy denali

Rear fuse box is under the seat bottom, rear seat (middle row) on the driver's side. There is a plastic cover over the top of it that snaps into place.

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: 2001 Yukon Denali: The security light came on my 1999 Yukon Denali ye...

The security system (Passlock) is having problems, it's typical on those trucks. You can find a great write-up here: http://newrockies.ca , it was the only thing that saved my Park Avenue.

SOURCE: 2002 Yukon horn does not work, where do i find the fuse, I know n

check the fuse box under the hood. i checked the one on the inside of door w/no luck also. i found a larger gray one there that was labeled horn