Well it seems I have now developed some noises coming from the front suspension, but the circumstances leading up to it are a little different than what most people have reported. The noises started after I replaced the front brake rotors this past Saturday. I've known for about a year that I would end up replacing the rotors and after the snow/ice/frigid temps event we had last month, they got worse. They were warped and caused a significant amount of vibration and "bouncing" at speeds starting around 30 mph.
I ended up buying the NAPA Adaptive One Coated Front Rotors (option code J60) for $90.00 each. I immediately got anxious when I opened the box because the new rotors had five holes for the lugs and five additional holes that were smaller and had a chamfered edge. I knew one of the holes was for the retaining screw, but couldn't understand the need for the other four holes. I've since learned it's nothing to worry about.
I got the new rotors on and put everything back together using appropriate torque specs. 118 lbft for the caliper bracket and 90 lbft for the caliper bolts. The new rotors are great and I would consider them a slight upgrade from the OEM. They're quiet, smooth, and the pedal feels slightly more firm. The only problem is I cannot enjoy them just yet because I now have a loud, annoying creaking noise at low speeds and it coincides with weight transfer from front to back.
From a dead stop, all I have to do is give it enough gas for the nose of the vehicle to lift up slightly and it creaks. At slow speeds I can kinda coast along and then give it a little gas and every time that weight transfer happens, so does the creak. So now I need to start looking at the LCA bushings, sway bar, upper strut mounts, end links, etc. The big question is why would changing rotors cause this noise to manifest itself? Here's my theory:
The vibration and bouncing I referred to may have loosened one or more suspension parts. I would imagine that one or more of the aforementioned parts should probably be replaced due to general age and wear and tear, but that doesn't necessarily mean that any of them are bad right now. The only troubleshooting I've done so far is spraying the LCA bushings with silicone spray and I wanna say it helped slightly, but the noise is still easy to replicate and it's loud inside the cabin.
I would welcome anyone else's thoughts or theories. I'm about to pull off the driver's side wheel and fender liner, and check the suspension bolts and bushings. The noise seems to be more prominent on the driver's side, although it sounds like it's coming from both sides.