I've looked around but can't seem to find a solution.
The brake pedal creaks at the top of travel. As long as there is air in the power booster you can get the creak while moving, stationary or even with the motor turned off for a couple of pushes while there is still air in the booster.
Doesn't take much. You can push it by hand and it's probably about 1/2cm. of travel. It's becoming really annoying.
I have the same problem as you in my 147 gta. I think it has occured from it standing around for quite a while...I was hoping it would wear off, but not so far. Surely we don't need a whole new pedal? Must be something to grease...might get in there and have an investigate
it will be the bushes on the pedal arm are you sure its not the clutch pedal if it is just pull the rubber back on the master cylinder and spray some silicone grease in there
No the clutch pedal has a different creak which I've had forever. After a service since the car was new, the clutch pedal would stop creaking for about a week and then it came back. I've learned to live with it.
This creak is definitely related to the brakes and I've sprayed WD40 on the only part on the brake pedal that I can see that moves underneath and it makes no difference. I've got a feeling it may be something creaking on the power booster but I can't find that anyway. I'm no mechanic as you can gather. I guess I'll live with it until the next service but it's irritating.
Do you feel a slight 'roughness' in the pedal when this noise occurs?
I had this issue with the GTA after the brake master cylinder and servo pipe were replaced.
The problem was intermitant, and the dealer suggested a new brake servo......dash out job on the 3.2 at least.
The car was booked in for an appointment four weeks down the line. Thankfully, the issue simply resolved itself, saving me well over £1000 in repair costs, and also saving the grief of damage to the interior and new rattles.