Creaking noice

[Robert986]

My Box developed a creaking/cracking noice in the driver side front.

If I go forward and brake firm, it creaks once, quite loud. If I continue forward, no more noice when braking. Then, if I put it in reverse, brake firm, the exact same sound, once.. So, it's like something is shifting position, goes back vs forward.

I put some.. ok here it comes... Some nail polish (hey, it's a girl-car..) over certain suspects to see if it cracks, but still no luck. Reassembled the brakes, new caliper bolts, proper tourque. Any ideas? It,s pretty loud and is heard from outside, I believe I can actually feel it in the steering wheel.