2007 Chevrolet Colorado Horn Relays

You should install the horn switch to the steering wheel, connect the screws that secure the contact plate to the steering wheel, then install the horn plunger to the steering column, install the inflator module, and enable the SIR system.

You need to disable the SIR system, remove the Inflatable Restraint Steering Wheel module, then remove the horn plunger from the steering column by pressing inward to the stop and by rotating the plunger 90 degrees, disconnect the screws from the steering wheel, then remove the horn switch from the steering wheel.