Will a 2004 trailblazer fuse box junction box work for a 2003 trailblazer Blaz

Hi, this is Bo, an auto expert on RepairPal's Car Genius team! A Trailblazer fuse box from a 2004 model might not be a direct fit. The electrical systems and part compatibility can differ slightly between model years. Your best bet is to look for a fuse box specifically from a 2003 Trailblazer to ensure compatibility. Alternatively, you can consult a dealership using your VIN to see if the part numbers match and if they may be compatible. Good luck! If you have any other questions, please call us at 877-913-1554! We'll gladly find you a certified RepairPal shop in your area!