pop your hood and on the driver side of the engine there is a black fuse box open it and look on the back of the lid it should tell you where the horn fuse is just replace it and it should work! - good luck
The horn relay is located in the fuse box under the hood of the 2007 Chevy Tahoe. The horn relay is responsible for making the car horn have sound.
The fuel pump relay on a 2001 Chevrolet Tahoe is located underneath the hood area. It is in the power distribution box.
There are two horns used on the 2001 Chevy Tahoe. They are mounted on each side of the radiator support.
check the horn relay or the horn itself!
The turn signal relay on a 2001 Chevy Tahoe is located behind the lower dashboard on the driver's side. It is just to the left of the cigarette lighter.
The horn relay on a 2001 Dodge Ram 1500 is located in the engine compartment year the firewall. It provides power to operate and control the horn.
#26 20A* Horn relay, Horns
The horn relay on a 2001 Ford Expedition is located on the RPO Relay Block 1. You can find this relay block under the dash just above the passenger-side air bag.
Starter relay
The horn relay will be mounted up under the dash. It is on the drivers side close to the kick panel.
The fuel pump relay switch and/or reset switch on a 2001 Chevy Tahoe is under the hood junction box. It is found near the center and is marked F/PMP relay.
In a 2001 Mercury Mountaineer : In the Power Distribution Box ( which is " live " ) located in the engine compartment , on the drivers side of the engine compartment : ( mini fuse # 10 is a blue color 15 amp fuse for the horn relay and the horn relay is relay # 7 )