One problem related to brake antilock wheel speed sensor has been reported for the 2002 Chevrolet 1500. The most recently reported issues are listed below.
Front speed sensors failed in 2005 before the recall on my 2002 chevy silverado z71. Had recall taken care of in 2005. They are failing again this year 2011 and now the rear brake line just ruptured yesterday 12/18/2011. My husband agrees that salt at is part of the problem with the brake lines but the abs sensors is an on going chevy problem in these trucks and once the recall is performed once, the future failures are up the the owner to fix and cover the cost. My truck is a 2002 but it only has 76,000 miles on it. All these braking issues should not be happening. And seriously they build these right here too, although mine says built in fort wayne , indiana, you would think they would be better made. And why did the stuff start really failing after my extended warranty ran out? go figure.