One problem related to brake sensor has been reported for the 2003 Chevrolet 1500. The most recently reported issues are listed below.
My chevy truck is a 2003 with 52000 miles on it, one owner,the abs sensors in the front wheels have failed 3 times now, what's scary is unlike other vehicles, the brakes fail when this happens, other vehicles the abs just shut off, still have brakes, also I am about to put on my 3rd set of back brakes in 52000 miles, still on the first set of front brakes, shortly after putting disc brakes like this on the rear they went back to drums, I also noticed that all the brake lines look pretty bad with corrosion, and the fuel lines, they mounted them right up against the frame so there is no where for water and and road crud to drain, being an engineer myself, I can't believe what they have done, the truck looks vary nice until you look under it, it all looks like 200000mi 20 yr old junker. The attempts they made to protect the back discs are a joke, the inferior material used for something as important as brake lines and fuel lines is criminal, and then mounting them to something they knew was going to rot prematurely like the frame is unconscionable. . . . . . . And no recalls on none of these issues is a sure sign nobody cares. One more note my friend had a 2002, and he had his brake lines recalled, 2003 are identical, no recall ?? one more thing, in the first 1000mi my brake booster unit had to be replaced. . I will keep this siverado until it turns to dust , which probably won't be long , I will not buy another. I have always been a gm fan, and have three other gm vehicles, my trust in them and the system to protect consumers has failed miserably. Greg.