1989 Gmc Sierra Horn Diagram. I need some help on gmc. Gmc sierra mk1 1993 1994 fuse box diagram.
1989 gmc sierra 1500 wiring diagram to properly read a cabling diagram one offers to find out how the particular components inside the system operate. In this video we investigate and discover the plug at the horn gets. In the new k2xx gm platform there have been several reports the horn is not operating.
Look for the plug where it belongs andbb if you find the plug then you need the relay.
Horn is under the hood usually on the firewa how ever there us a horn relay somewhere unfder the dash on drivers side pull it and makes sure it makes a clickin sounn if u hook power to it read full answer. Fuse box chevrolet silverado 1999 2007. Support my channel here. Note another common issue with these gm trucks is the switch located behind the air bag.