pedal squeak

[wild oats]

The brake pedal has a annoying squeak upon depressing, I've sprayed about everything with wd40 under there I can see, no results. sounds crazy, seems worse when it's cold out. anyone else had this one? thanks !

 

[LastFbody]

I have, though not on my Tahoe. This same thing would happens on my 94 Roadmaster whenever its less than ~50 degrees outside, or in the rain for some reason.

+1 to this thread, I bet the issue has similar origins.

 

[wild oats]

I have been told to use white lithium grease under on the pedal bushing.
I'll give that a go.

 

[wild oats]

I just sprayed under there with lithium, still doing it. have not got the spot yet, Amazing .

 

[wild oats]

Gone for now (above 50 degrees).......unreal !

 

[wild oats]

pedal

noise back , It's cold out again.

 

[mrfish]

My 2006 Tahoe does this whenever it rains! Very annoying. Replace hydro boost assembly?

 

[wild oats]

..Hey, Its got me, Soon as warmth gets to ,.......it stops! I've lubed everything under there.

 

[mrfish]

I believe we have to replace the hydroboost. $175 at partsgeek. How hard are these to replace? I too have lubed everything for years to no avail.

 

[wild oats]

..not sure how major that is either......

 

[Prospect62]

My truck doesn't have hydroboost and it makes the brake pedal squeak when it's very cold. Seems to me like an annoyance more than a problem to worry about. Certainly don't go replacing your hydroboost because of it.

 

[wild oats]

..Oh I won't !,..I just wish I knew what it is....Incredible- I can't find it. Thanks kev

 

[rickcott]

My 2003 Tahoe had a brake pedal squeak when you LET OFF of the pedal. Dealer said it was the boost - he did not have a stock unit so he installed a new unit from Advance. Squeak stopped but that unit transmitted a ton of feedback ( shaking ) thru the pedal.
Their "wizard" of a mechanic said that it would do that it you didn't turn the A/C on. Yeah, sure, in July or August in South Carolina - not unless you have a death wish - 104 degrees and 99 % humidity. Made him find a new GM one and swapped it out. Squeak stopped for about a month, then came back. Spent $320 in total - it's still squeaking.

 

[wild oats]

It's a hell of a mystery for sure, I'm just going to wait for warmer weather-It goes away, amazing for sure ,unreal we can't fix it. thanks for reply. kev

 

[wild oats]

temperature does not matter anymore, does it quite consistant, ..must be the hyd. boost
...has to be a b to replace.