Join Date: Jul 2004
Location: Clinton Township, MI, USA
Temp rotor cowbell fix
I have and 03 LT with the typical loose rattling rear rotor.
I got my nerve up last week and removed the rear wheel and rotor for inspection of the rotor. The wheel came off easily and then 2 screws holding the rotor and I had it in my hand. It was majorly loose and rattly.
I had a tube of Hi Temp RTV silicone (the red stuff). I sat down with a towel on my lap and "pushed" the RTV into the loose spaces around and into the buttons holding the friction surface to the center hub piece. Just like the old days of re-packing wheel bearings. I was carefull to wipe the excess away.
I remounted the rotor and wheel and torqued down properly. Once re-installed, I applied the rear brake to try to center the "Floating" rotor back to where it might be when the brake is applied. Since the RTV takes about 24 hours to fully cure, I periodically rotated the rear tire about 1/3 of a rotation and then re-applied the rear brake to re-center and friction surface to the "Brake apply" position. The rotation with the brake apply was an attempt to keep the rotor centered around rotation as best as I could. I have no idea how long it will last, but it has stopped the cowbell noise entirely and the brakes do not drag, squeak or perform and differently than before.
The whole process took about an hour.