Three problems related to front suspension wheel bearing have been reported for the 2001 GMC Sierra. The most recently reported issues are listed below.
Both right and left front wheel bearings found to be worn out. Movement of the tire at top from 1 to 2 inches. No steering or braking problems were detected before the condition was found as part of the missouri state safety inspection. This problem can only be corrected by replacing the hub assembly. Estimate of repair cost $1000. 00.
Contact states: at low speeds the abs locked up. The same problem happened to consumer's other GMC Sierra . Dealer said that the front wheel bearing/hub assembly was the problem. When the abs kicked in it resulted in extended stopping distance. No prior warning to the failure.
Contact states: at very low speed anti lock brakes would kick in when consumer would brake instead of braking the vehicle would keep moving, it doesn't matter what the weather condition is. It has been repaired at contact's expense. Contact called gm, they said it needed two new hubs, including the bearings (left and right). Gm covered 1/2 of the cost. Dealer diagnosed it without even looking at the vehicle because they had seen this before.