Two problems related to brake disc rotor have been reported for the 1998 GMC Sonoma. The most recently reported issues are listed below.
Had taken vehicle to dealer to check the brakes. The rotors had worn out & were shot. Service manager informed manufacter of problem and was told to replace the rotors, but not the pads. Was charged for the rotors, even though under warranty. Had vehicle checked again & repairs were not done, but the rotors were turned.
My 1998 GMC Sonoma developed a braking problem - pulling hard right. The vehicle (under warranty - 15,000 miles) was taken to the dealership to correct the problem. The front rotors were turned, pads deglazed, wheel bearings repacked, rear drums turned and shoes adjusted to correct the problem. The cost to me was $217. I have never experienced brake problems at such low milage on any vehicle I have ever owned. I am convinced that a defect exists in the braking system that gm is attempting to blame on the consumer.