Crummy chrome cladding
This TSB applies to 2011-2013 Cadillac Escalade, Chevy Avalanche, Silverado, Suburban and Tahoe, and GMC Sierra and Yukon vehicles equipped with 20-inch chrome clad wheels.
Some customers may comment on a clicking noise heard from under the vehicle or the side of the vehicle. The noise is worse when driving next to a building or a wall at low speeds of 20 to 30 mph.
Each wheel is made of two pieces. The chrome outer shell may be contacting the inner wheel, causing the noise.
GM advises to spray lubricant around the valve stem, one wheel at a time, and recheck for the noise. If this eliminates the noise, GM recommends replacing the wheel.
Another possible cause of a clicking noise may be caused by contact between the center cap and the wheel chrome-over-plastic cover. Dirt between these two mounting surfaces may make this condition worse.
1. Drive the vehicle to confirm the noise.
2. Remove all four center caps and drive the vehicle to determine if the noise is eliminated.
3. If the noise goes away, add tape to the mounting fingers of each center cap, reinstall the caps and road test again. If the noise is gone, remove the caps and remove the tape.
4. Using a file or die grinder, lightly file/grind the chrome off of the fingers of the center caps and reinstall.