I recently bought this 1998 gmc sierra, 5.7l v8 and I've had no issues with it braking or anything until yesterday. When I would come to a complete stop the brake pedal would shake and I could hear a noise coming from the engine, i think near the master cylinder. It groans, not whines. It kept getting worse as i drove it around and is getting louder and more noticeable. I've been trying to research what’s wrong with no avail. I attached a video of me braking and the sound it makes.
iCloud
A couple things I wanted to note. It only makes that noise when i come to a complete stop, and I see no leaking brake fluid and my reservoir seems to be maintaining the fluid in it. Its louder and shakier the faster I'm going, and there's no shake in the truck itself.
iCloud
A couple things I wanted to note. It only makes that noise when i come to a complete stop, and I see no leaking brake fluid and my reservoir seems to be maintaining the fluid in it. Its louder and shakier the faster I'm going, and there's no shake in the truck itself.