Quote:
Originally Posted by rightyouareken
Once the noise shuts off after ~10-30 seconds or so, pump the brake pedal 5-15 times. If the noise starts up again, that's your brake booster/pump which is attached to your master cylinder. If you do feel something is wrong with it, PM me, there are some sub assemblies that you can buy to save some money potentially. I recently had to replace the whole kit and kaboodle on my 2002 after much diagnosis and research.
If the noise doesn't reoccur no matter how much you press the brake pedal, it was probably your antenna motor or something else.
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Mine almost sounds like a motor/vibrating sound in the speedometer dash area, then ends with an audible click on the passenger side. Does it when I start the truck and often each time I brake, same length and sounds. Maybe it's this? Never did it before, until I had brake work at Toyota!
**(But I wouldn't call it loud, but noticeable)**
