Chevrolet Blazer - 2003 Fuse Box Diagram diagramfusebox›ChevroletChevrolet; Blazer - 2003 Fuse Box; Testing . the . Alarm . The alarm can . be tested by following these steps: 1. From inside the vehicle, lower the driver’s window . and open the driver’s door. [email protected] 2. Activate the . system by locking the doors with the . power . 2003 Chevrolet Blazer Fuse Box (Used/OEM) | For Sale By automotix››Chevrolet Blazer›2003 Chevrolet BlazerBelow you can view our actual 2003 Chevrolet Blazer Fuse Box inventory that we have listed for sale. Each listing indicates the location of the salvage yard that stocks the particular Fuse Box .