2014-2019 Silverado Sierra Driver Dash Fuse Relay Junction Block OEM 23459420

Genuine GM Driver Side Instrument Panel Wiring Harness Junction Block — Part Number 23459420

Replace your truck’s driver-side interior fuse box with this genuine recycled OEM GM junction block from Part Xperts USA. Commonly searched as a driver dash fuse box, instrument panel fuse and relay box, or interior wiring junction block, this original GM component provides a factory replacement option for the applications listed below.

Compatible Vehicles

• 2014–2018 Chevrolet Silverado 1500
• 2019 Chevrolet Silverado 1500 LD
• 2015–2019 Chevrolet Silverado 2500 HD
• 2015–2019 Chevrolet Silverado 3500 HD — Crew Cab Pickup and Cab & Chassis applications
• 2014–2018 GMC Sierra 1500
• 2019 GMC Sierra 1500 Limited
• 2015–2019 GMC Sierra 2500 HD
• 2015–2019 GMC Sierra 3500 HD — Crew Cab Pickup and Cab & Chassis applications

These are application-specific fitments. The 2019 half-ton applications are Silverado 1500 LD and Sierra 1500 Limited.

Equipment Application: Driver-side instrument panel block for vehicles without power-adjustable pedals.

OEM Part Number: 23459420
Superseded GM Part Numbers: 23176467, 23443945

GM catalogs list 23459420 as the replacement for these earlier numbers; this does not establish that every earlier version is interchangeable in both directions.

Location and Function

This block is located inside the cabin at the driver-side edge of the instrument panel, behind the fuse-block access cover. It serves as an electrical distribution and connection point for the associated interior wiring circuits. Its fuse and relay connections work with the vehicle wiring harness to supply and protect the circuits assigned to this block.

Basic Removal and Installation Overview

1. Park securely, apply the parking brake, switch off the ignition, and remove the key.

2. Follow the vehicle-specific service procedure to disconnect battery power and observe the required restraint-system precautions before working behind the dash.

3. Open the driver door and carefully remove the driver-side instrument panel fuse-block access cover.

4. Photograph the original block, connector positions, and fuse layout before disconnecting anything.

5. Follow the applicable service instructions to remove any additional trim needed for access.

6. Release the wiring connector locks and disconnect the connectors without pulling on the wires.

7. Release the block’s mounting attachments according to the vehicle-specific procedure and remove the original block.

8. Compare the replacement block’s part number, connector arrangement, and fuse configuration with the original.

9. Secure the replacement block using the specified mounting procedure, then reconnect and fully lock the wiring connectors.

10. Reinstall the trim and access cover, restore battery power according to the service procedure, and check operation of the affected electrical circuits.

This is a general overview; attachment details, electrical isolation requirements, and any component transfers must follow the service information for the exact vehicle.

90-Day Standard No-Questions-Asked Return Policy

Shop confidently with Part Xperts USA. This part includes our 90-day standard no-questions-asked return policy, giving you added peace of mind with your purchase. Contact us within the 90-day return period to arrange a return.

Fitment and Condition

Confirm compatibility by VIN before ordering. Installation should be performed by a professional technician. All parts come from recycled vehicles and have normal wear, tear, and scratches. Please review all product pictures closely for imperfections before purchasing. We do our best to photograph defects with closeups; customers are responsible for reviewing the pictures and making sure they are satisfied with the part’s condition before ordering.