Metallic slap, chirp type of noise

kylant · May 16, 2023

hard to explain. but my truck is making a metallic slap, chirp, rattle type of noise when going over abrupt bumps in the road. i thought it was my sled deck rubbing on the bed of the truck, but the deck is off the truck now.

i have yet to pinpoint the location, but on occasion it sounds like it is coming from both the front and the rear.

yesterday, i noticed when i hit the brakes, at the initial movement, there is a similar sound. (maybe pads moving on pins?)

any thoughts or suggestions?

thanks

kylant · May 20, 2023

well this issue seems like it is brake related. if i apply my brakes, right at the beginning, the chirp will occur.

also if i apply the brakes going over abrupt bumps, the chirp/rattle is not there. if i go over the same bumps without the brakes applied, the rattle is there.

thoughts?

Flatus · May 23, 2023

I had my truck in yesterday for similar complaints. I describe my noise as a "squeak" when hitting bumps and/or bridge joints. Mine also seems to come from both sides. I also have the brake squeak which has been gradually getting worse. The tech heard my bump hitting squeak while out on a drive but he said I need to leave it with them longer in order to figure it out. They ordered new brake pads for all corners and will replace under the TSB. I will have to make an appointment to get the pads replaced and will plan on it being with them for at least a day so hopefully they can figure out the other issue.

kylant · May 23, 2023

mine is a squeak/chirp as well. i am pretty sure it is coming from the pads and the pins. why is the question??

my pads are also starting to squeal at low speeds

mine goes in friday

post what they find!

Edited May 23, 2023 by kylant

kylant · May 29, 2023

update.

truck was at the dealer, tech heard the noise, thought it was from the suspension. greased the sh*t out of the ball joints. didn't change anything (I had just greased them). problem not fixed.

i mentioned (because they asked) a slight squeal of the brakes at parking lot speeds. they replaced the brake pads even though I did not ask for them to be replaced.

I am convinced the chirping noise is coming from the pads or the pins. If i applied the brakes while sitting in the driveway, I can get the chirp/squeak to happen

treadmatt · May 29, 2023

might be alignment issue, or faulty tires

kylant · June 1, 2023

update:

I took the time to take out each of the brake pads and grease the ears and the retaining hardware. the hardware was bone dry, the ears had a smidge of grease on them. I am surprised how easy the pads are to access and deal with (except the wear sensor).

anyway, the chirp, squeak, rattle is gone. I have yet to hear it since doing this. don't know what the root cause was, but i think it was the pads slightly rattling in the hardware

Edited June 1, 2023 by kylant