Tip - How to Replace the Half Shaft on a Chevy Impala | eHow

A half shaft on a Chevy Impala transfers power from the engine to the wheels. One end of the shaft is connected to the transaxle, and the other end is connected to the hub assembly at the drive wheels. The shaft has a joint, called a CV joint, that gives the shaft flexibility. Over time, these joints wear out and are typically the reason the...