Two problems related to electrical system have been reported for the 2003 Chevrolet Blazer. The most recently reported issues are listed below.
Brake lights fail to turn on when brake pedal is pressed. Replaced brake switch, all tail lights. Mechanic investigation shows multi-function switch to be cause of problem as in previous recall for multi-function switch on 2002 Blazer. Requesting investigation and addition to the recall.
I own a new 2003 Chevrolet Blazer. . . It is only 7 months old with only 7,300 miles on it. I was driving home tonight and heard a " clicking noise" which sounded like the turn signals were on. . . They weren't. . . When I pulled in my driveway and turned the Blazer off (key switch in lock position) steering wheel locked in position, my Blazer was still running ! my headlights were off, my inside lights were off, all panel lights were off, so my husband turned the inside panel lights, switch the Blazer turned off. . . Something is terribly wrong with this. . . The whole system was like it went nuts. . . I have waited a few hours and since went back out there and tried it again. . . Same thing happened. . . And it all happened out of no where. . . The Blazer has driven fine. . . No problems with it at all since purchase, but now there is also a clicking noise that can be heard under the hood when Blazer is running (sitting still).