2001 malibu horn fuse and relay are located in the under the hood fuse box. location 21 should be the relay location 43 should be the fuse. if the relay is put in wrong the horn will not work. if you replaced the relay and the horn stopped working try pulling the relay out and turning it around. and try the horn again. Fuse location for horn on 2001 yukon - Fixya Is this answer helpful?Thanks!Give more feedbackThanks!How can it be improved?How can the answer be improved?Tell us how GMC Yukon (2000 - 2001) - fuse box diagram - Auto Genius Jan 01, 2017GMC Yukon (2000 – 2001) – fuse box diagram Year of production: 2000, 2001 Instrument Panel Fuse Block The fuse block access door is on the driver’s side edge of the instrument panel. SOLVED: Where is the fuse box for a 2001 Yukon Denali? - Fixya Jul 17, 2012Where is the fuse box for a 2001 Yukon Denali? I am looking for the location of the fuse box for a 2001 Yukon Denali Posted by Anonymous on Jul 17, 2012. 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.