No Power to car / Won't start?

If your 1999 Chevrolet Suburban is experiencing a complete loss of electrical power, and jumping the battery doesn't help, there could be a major issue with the electrical system. Here are some potential causes to consider:

Main Fuse or Fusible Link: Check the main fuse or fusible link in the vehicle's fuse box. If this critical fuse is blown, it can cause a total loss of power to the entire car.

Faulty Ignition Switch: The ignition switch could be faulty or worn out, preventing the electrical system from receiving power when you turn the key.

Battery Cable or Ground Connection: Even though you've checked the battery connections, it's worth double-checking both the positive and negative battery cables and their connections, including the ground connection to the chassis. Loose or corroded connections can disrupt the flow of electrical power.

Faulty Battery: Although you mentioned that the battery is good, there's still a possibility that it may have an internal issue or be connected improperly.

Security System Malfunction: Some vehicles have security systems that can prevent power from reaching the car's electrical components if the system malfunctions or is triggered.

Failed Electrical Component: A major electrical component, such as the main relay or a critical module, might have failed, leading to a complete loss of power.

Take those cables off, and remove the bolt.

There is a thick lead washer, about 3/8 think.

A really hard greenish/blue deposit builds up on the washer and also on the cables that will not let electricity flow.

Glad to have helped,

come back anytime.