Q: How to remove and install a horn on Chevrolet Avalanche,Silverado,Suburban,Tahoe,GMC Sierra,Yukon,Yukon Denali and Yukon XL?
A: on Chevy truck models, remove the Headlight housing and disconnect the electrical connector. Next, remove the horn mounting bracket bolt and remove the horn and bracket. Detach the horn from its mounting bracket. Installation is the reverse of removal.