Metra 107-GM4B Dash Kit Installation Guide

Quick Guide

The Metra 107-GM4B is an installation kit designed specifically for the Pioneer DMH-C2550NEX and DMH-C2500NEX radios. It is compatible with Chevrolet Silverado 1500 (2019-Up), GMC Sierra 1500 (2019-Up), and 2500/3500 models (2020-Up) equipped with a 2-knob 8-inch screen radio (RPO code IOS or IOT). Before starting, ensure the vehicle has sat with the key out of the ignition for a few minutes.

Tools Required

• Panel removal tool
• Phillips screwdriver
• 9/32" socket wrench
• T-15 Torx screwdriver

Dash Disassembly

For models with a full center console:

1. Unclip the screw cover from the driver’s side of the center console and remove the 9/32" screw.
2. Starting from the rear, unclip and remove the center console trim panel from each side.
3. Starting from the rear, unclip and remove the cup holder panel.

For all models (continued):

1. Unclip and remove the lower trim panel.
2. Unclip and remove the trim panel surrounding the radio display.
3. Remove the (6) 9/32" screws securing the climate and radio control panel, then unplug and remove the panel.

Kit Preparation

1. Remove (10) T-15 Torx screws securing the cover from the back of the factory radio.
2. Lift the bottom of the cover to access the ribbon cable, unplug it, and remove the display.
3. Remove (4) T-15 Torx screws securing the radio controls and remove them.
4. Place the blank-out panel into the panel and secure it using the factory screws.

Kit Assembly

1. Secure the display screen to the display screen brackets using (6) screws supplied with the radio. Note: The display screen and radio chassis use different types of screws; refer to the radio's installation manual.
2. Route the RGB extension cable from the radio chassis to the display screen and connect it.
3. Place the display screen assembly into the display screen housing and secure the entire assembly to the factory radio panel using the factory screws.
4. Locate the factory wiring harness and antenna connector in the dash and complete all necessary connections.
5. Reassemble the dash in reverse order of disassembly.

Wiring and Connections

The following parts are required but sold separately:

• Wiring Harness: AXTC-LN30 (for non-amplified models only)
• Antenna Adapter: 40-EU55
• RGB Extension Cable: Pioneer part # CD-RGB150E (not sold by Metra)

Important: Temporarily plug the climate control panel back in during testing to avoid vehicle error codes.

Support

If you encounter difficulties, contact Metra Tech Support at 386-257-1187 or email [email protected]. Ensure the installation was performed exactly as stated before contacting support.