clicking sound when brakes applied

[Frankhenrylee]

Hey fellas, whats up? I've got another weird electrical issue on my 2002 Tahoe 4x4. Whenever I apply the brakes while in park there's a clicking sound coming from somewhere around the column and instrument cluster. Any ideas?

 

[Phantomx55]

I am pretty sure its just a relay, mine does it too and I am pretty sure they all do.

Turn up your radio, It goes away.

 

[Rivieraracing]

I'm guessing the relay as well!

 

[Phantomx55]

Yea, actually I am quite sure it's just a relay activating to turn your brake lights on

 

[rob71]

There's no relay in the stop lights circuit.

What you're hearing is the shifter interlock solenoid that prevents you from shifting out of Park without pressing the brake pedal.

 

[Frankhenrylee]

There's no relay in the stop lights circuit.

What you're hearing is the shifter interlock solenoid that prevents you from shifting out of Park without pressing the brake pedal.

So it's a normal sound? Can the slenoid be replaced with a quieter one?

 

[rob71]

It's normal. I don't think you can make the mechanism quieter without redesigning it, unless it's unusually loud for this type of vehicle.

If it's really loud compared to other GMT800 trucks, you might swap the mechanism in from another truck.

Then again, you only hear it when you press the brake pedal before you shift out of park so it may not be worth the effort.

 

[Frankhenrylee]

Thanks for the info. I'm not gonna bother with it unless I stop hearing it.

 

[tahoe22chrome]

servo motor?

 

[dropmech]

servo motor?

ummm..........random much?