GMC Full Audio Packages
Installation Instructions
Below, you'll find step-by-step instructions for installing Metra Electronics GMC full-car audio packages. Whether you're a seasoned installer or a DIY enthusiast, our guides are designed to ensure a smooth and successful installation process.
Sierra
The following section includes full audio package installation instructions for the GMC Sierra for the years 2019 through 2024.
→ BOSE Amplified Systems
Uses an external or built-in amplifier to boost audio signals, delivering louder and clearer sound with enhanced bass and greater customization options.
2019-2021 Sierra 1500 Crew Cab
2020-2023 Sierra 2500HD/3500HD Crew Cab
2019-2021 Sierra 1500 Crew Cab
2020-2023 Sierra 2500HD/3500HD Crew Cab
2022-2024 Sierra 1500 Crew Cab
2024-Up Sierra 2500HD/3500HD Crew Cab
2022-2024 Sierra 1500 Crew Cab
2024-Up Sierra 2500HD/3500HD Crew Cab