2009 Chevrolet Trailblazer Horn Relays

First, you need to install the horn switch to the steering wheel and connect the screws that secure the contact plate to the steering wheel. Then, please install the horn plunger to the steering column. Finally, you should install the inflator module and enable the SIR system.

First, you need to disable the SIR system and remove the Inflatable Restraint Steering Wheel module. Then, please remove the horn plunger from the steering column by pressing inward to the stop and by rotating the plunger 90 degrees. Finally, you should disconnect the screws from the steering wheel and remove the horn switch from the steering wheel.