Three problems related to brake antilock wheel speed sensor have been reported for the 2001 GMC C2500. The most recently reported issues are listed below.
Front wheel (both) speed sensor were corroded and would not pass inspection. There was a recall, campaign number 05v379000 date: Aug 29,2005 that describes the exact problem we had with the sensors. We took the vehicle in on 9/07/05 for an inspection and it did not pass due to the sensors. We were advised to pay for repair ($500) and send receipt in when our VIN number was listed on the recall. . . . To this day gm claims we do not qualify and I would like to make a formal complaint that we should be reimbursed for our repairs.
The contact owns a 2001 GMC 2500 pick up truck, and the brakes have completely deteriorated. The vehicle had only 18,000 miles. While driving heard a buzzing noise from the back of the vehicle. The consumer continued driving the vehicle home, and later had the vehicle towed to a service dealer. The service dealer stated the vehicle needed to have brake pads, rotors, and calipers on the back. On the front of the vehicle the rotors will need to be turned. The abs front speed sensor was defective. The service dealer had to replace the abs front speed sensor, replace at least one rotor on the back, a back caliper, and the front rotors will need to be turned, and may have to replace the front brake pads.
Abs will activate when coming to a stop at approximately 5 mph. Rotors and pads were replaced 1 year ago and dealer paid half under warranty. I'm now told by a reputable mechanic that the speed sensor gear is rusted and the whole hub will have to be replaced.