The horn on my Chevy constantly is going off.

Asked by May 05, 2015 at 04:10 PM about the 2001 Chevrolet Silverado 1500 LS Extended Cab LB 4WD

Question type: Maintenance & Repair

When we start our truck the horn is
going. Off and the security light keeps
going off my locks lock with out me
pushing the button the lights go from
dum to high by its self. Also replaces the
heater core and the mechanic cut our
light sensor.. a clicking nose is also
coming from the fuse box my truck is a
01. Chevy Silverado 1500 base Ls/LT

7 Answers

7,335

The clicking noise is a relay tripping on and off, if you can isolate which relay it is that might point you in the right direction.

What's a relay switch I don't know much about cars.

7,335

A relay controls other devices (horns,starters,etc.) through the use of a switch. If you still have the owners manual it should have a description or legend of the what's in the fuse box as to what fuse or relay goes to what.

The ignition 1 that clicks the horn stops when we take the fuse out..

7,335

Possible body control module issue, it controls the security system.

Would you happen to know how much that usually costs?

7,335

Not off hand and besides you might want have it checked out to make sure that's what it is.

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