One problem related to brake light on has been reported for the 2003 GMC Sierra 2500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 GMC Sierra 2500 based on all problems reported for the 2003 Sierra 2500.
The contact owns a 2003 GMC Sierra 2500. The contact stated while driving the service brake light illuminated. The vehicle was taken to a local mechanic who performed a diagnostic test that located the failure within the brake and fuel lines. The brake and fuel lines were corroded which caused the brake fluid and fuel to leak. A complaint was filed with the manufacturer. The vehicle was not repaired. The VIN was not available. The failure and current mileage was 76,000.