Chevrolet Silverado mk4 (4th Gen) (2019–2022) fuse box and relay Diagrams

The Chevrolet Silverado 4th Generation (2019–2022) is a robust full-size pickup truck known for its strong performance, advanced technology, and versatility. A key element of the Silverado’s reliability and functionality lies in its sophisticated electrical system, which includes multiple fuse boxes and relays.

The fuse boxes in the Silverado 4th Gen are strategically placed to protect various electrical circuits throughout the vehicle. Typically, there are two main fuse boxes: one in the engine compartment and another in the cabin. The engine compartment fuse box controls high-power circuits like the engine, transmission, and cooling fans, while the interior fuse box manages accessories and comfort features such as power windows, infotainment, and lighting. Each fuse is designed to blow in case of an electrical overload, safeguarding the vehicle’s wiring and components from damage.

Relays in the Silverado act as electrically controlled switches for high-current systems, including the starter, fuel pump, and various electronic control units (ECUs). These relays ensure that high-power systems are activated safely by low-current signals, preventing potential electrical failures. Regular inspection and maintenance of the fuses and relays are crucial to maintaining the Silverado’s electrical integrity and ensuring all systems function correctly.

MUST READ: DYI – How to Check Car Fuses?

(2019-2022) Chevrolet Silverado mk4 (4th Gen) fuse box and relay with Diagram

WARNING

• Never replace a fuse with one that has a higher amperage rating.
• A fuse with a too-high amperage could damage the electrical part and cause a fire.
• On no account should fuses be repaired (e.g. patched up with tin foil or wire) as this may cause serious damage elsewhere in the electrical circuit or cause a fire.
• If a fuse blows repeatedly, do not keep replacing it. Instead, have the cause for the repeated short circuit or overload tracked and fixed.
• Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.

Chevrolet Silverado mk4 (4th Gen) 2019-2022 fuse assignment

• Cigar lighter (power outlet) fuses in the Chevrolet Silverado are the fuses № 27, 28 and circuit breakers CB1, CB2, CB3 and CB4 in the Right Instrument panel fuse box.

Year of production: from 2019, 2020, 2021, 2022

Fuse box location

Left Instrument Panel Fuse Block

It is located on the driver side edge of the instrument panel.

Right Instrument Panel Fuse Block

It is located on the passenger side edge of the instrument panel.

To access the back of the fuse block:
1. Push the tab at the top of block down;
2. Pull the top of the block outward;
3. Reverse Steps 1-2 to reinstall.

Engine compartment

Fuse box diagrams

Engine Compartment Fuse Block

Instrument Panel Fuse Block (left side)

Instrument Panel Fuse Block (Right)

The right instrument panel  fuse block access door is on the passenger side edge of the instrument panel.

Conclusion

For owners and enthusiasts of classic Chevrolet Silverado mk4 (4th Gen) 2019-2022, understanding the fuse box and relay systems is essential for vehicle maintenance. Regular inspection and maintenance of these components helped ensure the vehicle’s longevity and reliability, preserving its status as a symbol of Chevrolet’s craftsmanship and innovation in the automotive industry during that era.