Two problems related to brake sensor have been reported for the 1998 Chevrolet 1500. The most recently reported issues are listed below.
1998 1/2 ton chevy pickup brake failure abs sensors corroded gm had recall on 1999 through 2002 same problem will not help on this year although the problem is the same. Truck only has 57000 miles on it. Nhtsa investigated April 05 big safety factor local garage cost to repair $500. 00 truck in northern IL.
Antilock brake sensor activated the brakes at less than 5mph just as listed in the recall which includes 1999 and beyond. It was a serious issue so I had it in for service on several occasions. They finally found the issue was the corrosion on the ab sensor and cleaned them. This resolved the issue. It has now started again as of December 2011 with 84,000 miles. It is exactly the same issue as before and as listed in the recall for 1999 and newer versions.