Two problems related to brake disc have been reported for the 1996 Chevrolet K1500. The most recently reported issues are listed below.
The hub of the brake rotor became separated from the rotor during vehicle operation. This resulted in a severe vibration, loud grinding noise and a partial lose of control during braking. When the brakes were applied, essentially, one of the calipers was rendered inoperative as the disc it clamps on had separated from the hub. The hub is sheet metal welded to the disc vs. A complete casting as has been previously the standard for this part. Weld failed resulting in the catastrophic failure of this critical brake component. Additionally, had this failed at speed, it is unknown what other damage may have resulted to the braking and/or steering systems.
When making a firm stop (not panic) when tires pass over a ridge on dry road surface, pass over a sewer cover (or any kind of road irregularity) abs activates at approx 20mph or less. Braking forces lessens for about one truck lenght and pedal vibrates a little. It seems like abs stays on even though the road is dry and smooth. Load in the bed is about 400lbs, tires are good, brakes are clean. Dealer did not want to go for test drive. . . Said there may be a recall for this. Truck has been at dealer about a dozen times the first year and a half for rear brake pulsation and lock up. Went to arbitration. . . "performing as designed' even though 4 drums and 6 pairs of shoes replaced . Cover.