One problem related to abs brake fail has been reported for the 2003 Chevrolet Suburban. The most recently reported issues are listed below.
The metal brake line between the abs modulator valve and front right wheel ruptured when the brake pedal was pressed. The line failed due to corrosion. All brake lines in the vehicle had similar levels of corrosion near the area the aforementioned line ruptured, and at various other locations on the vehicle. A brake line between the master cylinder and abs modulator had failed in a similar mannner approximately 8 months previously. The transmission cooler lines had also failed due to corrosion approximately 2 years ago. The corrosion and rust on many other components beneath the vehicle and in the engine compartment is rather concerning. Power steering lines (including power brakes, since the vehicle has hydro-boost brakes) appear to be next. All metal brake lines were replaced immediately after the most recent failure for an owner cost of about $500. It is my understanding that the NHTSA recently closed an investigation of brake line failure due to corrosion on several gm trucks and suvs. After about 4 years, this investigation determined that "a safety-related defect has not been identified at this time. " apparently they don't read the complaints on their own website. . .