HMI, CSM, Radio (ACM) and Amplifier Modules

WAMS stocks genuine OEM GM replacement modules for GM infotainment and audio systems: the HMI (human machine interface) module, the center stack module (CSM), the audio control module (ACM) radio, and the Bose radio speaker amplifier. Every module is brand-new factory hardware, VIN-programmed for your vehicle before it ships, and ready to install. If your radio screen works but you have no sound, the fault is usually the ACM or the amplifier, and a dealer diagnosis will tell you which. Whether you need a replacement radio module, a replacement amplifier, or an upgrade to your factory system, we have factory-correct OEM solutions.