Comments: I read where NHTSA has started an investigation into this problem. I have a 1998 Astro AWD pasasenger van with the same symptoms (started at 50,000 miles, currently has 67,000 miles. I pulled the fuse so I at least have brakes at slow speeds. I nearly ran into my garage and am concerned becauase we live near railroad tracks. Have rolled into intersections beacause of this safety problem. ABS engages at slow speed which allows vehicle to keep going (renders to brajes useless) there is a tsb by GM on this shown below. My concern is that this vehicle is not listed in your investigation. This is a serious safety issue. Brakes - antilock brake activation at low speeds file in section: 05 - brakes bulletin no.: 02-05-25-006A date: December, 2002 technical subject: Antilock brake (ABS) activation at low speeds (clean wheel speed sensor mounting surface) models: 1999-2000 Cadillac escalade 1995-1999 Chevrolet Silverado (old style) 1995-2000 Chevrolet Suburban, Tahoe (old style) 1995-2003 Chevrolet Astro van, Blazer, S10 1995-1999 GMC Sierra (old style) 1995-2000 GMC Yukon, Yukon XL (old style) 1995-2001 GMC Envoy, jimmy 1995-2003 GMC safari van, sonoma 1995-2001 Oldsmobile Bravada this bulletin is being revised to change model information. Please discard corporate bulletin number 02-05-25-006 (section 05 - brakes). Condition some customers may comment on ABS activation at low speeds usually below 8 km/H (5 mph). Upon investigation, the technician will find no dtcs set. Cause the cause of this condition may be an increased air gap between the wheel speed sensor and the hub reluctor ring due to rust and debris built up on the sensor mounting surface. Correction

- Lake City, PA, USA

Sensor failed.

- San Clemente, CA, USA