I have a rattle in my left front tire area that I cannot figure out. I have replace the hubs and ball joints recently on the left and right as well as shocks and rotors. I took the tire off to check for anything loose, found nothing. The rattle occurs when I hit any kind of bump and does not happen at all when I hold the brake pedal slightly. Also doesn't make this rattle in reverse. Anyone have a clue as to what this might be? I have a 99 blazer LT 4wd. It's also lowered front and rear if that helps

 

I would lift up the front end of the ground and check for pitman and/or idler arm play, if your steering is a little loose this could be another sign leading to it.

 

It could actually be your hood hinges. There is a TSB about needing to replace the washers for cone shaped ones. Open your hood and shake it from side to side at the hinge to see if its clunking, or some people say stuff a shirt or rag at the hinge to see if it goes away. If it does, then you need the conical washers. It fixed my strange clunk.

 

It could be the bushings on your stabilizer bar. If it is the same problem I had, you can diagnose by raising both front wheels off the ground (jacks need to be placed under the frame), then you can grab the stabilizer bar with your hand and shake it. I could hear the same sound I would hear while driving over bumps.

 

Thanks guys! I will check all these things out and see if any of these are my issue.

 

What about brake parts?

 

what he said!

 

caliper bushings, nuff said. If it stops when you push the brake pedal slightly, its stabilizing itself on the rotor, causing the rattle to stop. I would start there.

 

After checking everything that you guys have mentioned, the only thing I could find play in was the caliper. Didnt notice last time I looked at it. Just checked the bolts. I have some new bushings ordered and will let you guys know if that fixes the issue when they come in and I have time to put them in.

 

Good luck, be sure to post your results!