One problem related to brake light on has been reported for the 2000 GMC Sierra 2500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2000 GMC Sierra 2500 based on all problems reported for the 2000 Sierra 2500.
While driving the brake and abs lights on the instrument panel light up. This has occurred while driving of the freeway and on city streets. Sometimes these lights go off and sometimes they remain lighted. When this happens I fear that there is a problem with the brakes and have taken this matter to a mechanic. The brakes were examined and he found nothing wrong. This is very startling to the driver and of great concern. This appears on internet searches and it appears that 100,000 plus individuals have this problem. I have contacted the dealer and obviously this matter has been brought to there attention. Yet they claim they are unfamiliar and want to charge $600 to diagnose and then likely more to fix. This is obviously a lie as there is no way that one could be reading so much about this on the internet if it was not a problem in the GMC sierra trucks. Some claim it is a faulty circuit board while others have lost the use of their brakes. This is of great concern. This occurs while driving and the vehicle is in motion and sometimes at high speeds on a freeway.