Your car may not as missed up as you think you have two fuse blocks one inside one out side but you also have fusible links . The links below will show you what they can look like. On GM you have one located on your starter .They can also be in the harness that connects to the pos (+) side of the battery these just look like wires.But there only about 4 or 5 inches long an they are taped up to look like harness . They are color coded this will tell you how many amps they are. You can get them at any auto parts store for about $ 5 to $10 each. Any GM service should tell you where they are located. I hope this will help you Good luck.