One problem related to sway bar has been reported for the 2008 Chevrolet Avalanche.
The most recently reported issues are listed below.
1 Sway Bar problem
Failure Date: 02/18/2017
The sway bar frame mount brackets rusted through and the sway bar broke loose. The vehicle was making a right turn maybe 10 miles an hour on a city street.
Other Suspension related problems of the 2008 Chevrolet Avalanche