One problem related to front suspension coil spring has been reported for the 2001 Chevrolet Blazer. The most recently reported issues are listed below.
Vehicle rides hard/ jumped up and down, and there is a knocking noises coming from underneath within suspension of vehicle. Dealership told her that coil spring insulated. Insulated is a rubber piece that sit by the coilspring and rubs off. Dealership is aware of problem.