U0184 on GMC
Lost Communication With Radio
U0184 on GMC vehicles indicates lost communication with radio. Au7o has documented this code across 3 GMC models — most commonly on Acadia, Sierra 1500, Terrain. This network code means a module stopped receiving expected communication messages from the radio/audio module over the vehicle's data bus. When the radio module goes offline or its bus connection fails, this code is logged. On some vehicles the audio module also acts as a network gateway, so its loss can trigger several related communication codes. Symptoms are typically a dead or unresponsive radio/infotainment system; it does not affect drivability. Typical repair costs on GMC range from $100 to $2,500, depending on the specific model and root cause.
Common Causes of U0184
- •Loss of power or ground to the radio/audio module
- •Blown radio fuse
- •Wiring or connector fault on the communication bus
- •Faulty radio/audio control module
- •Corroded or loose module connector
- •Network/bus wiring short affecting multiple modules
U0184 on GMC by Model
GMC Acadia(1 issue)
- Infotainment System Lockup, Black Screen and Random Reboots (2nd-Gen IO/IOR Head Unit)2017-2021
GM bulletin 22-NA-033 covers 2019 GMC Acadia vehicles equipped with IOS, IOU or IOT radios that can reset or reboot and display the GMC splash animation. Bluetooth-call or touch-input symptoms can occur immediately before the reboot.
GMC Sierra 1500(2 issues)
- Infotainment System Audio Loss and Malfunction2019-2023
The infotainment system experiences intermittent complete audio loss affecting stereo, turn signals, and safety warning sounds. The audio system may randomly go to maximum volume and cannot be controlled. OTA software updates have caused additional issues including erratic blinker tones, constant reboots while driving, and frozen camera screens.
- Total Loss of Cabin Audio — Radio, Turn-Signal Clicks and Collision-Warning Chimes All Go Silent2025
A recurring 2025 Sierra 1500 electrical fault kills every audio output in the cabin at once. Owners start the truck and there is no radio, no turn-signal tick, no chime for hazard flashers, no Apple CarPlay audio, and — critically — no audible forward-collision, rear-cross-traffic or lane-departure warning. The cabin is completely silent. The condition is intermittent, appears at start-up, and can persist for hours; a restart sometimes clears it. Because the visual and audible warning channels are decoupled, a driver can be unaware the alerts are muted until a warning is needed. Multiple owners report three or more dealer repair attempts without resolution, including amplifier and radio-module replacements. Complaint ODI numbers include 11734260, 11695335, 11683187 and 11688990.
GMC Terrain(1 issue)
- IntelliLink Infotainment Freezing/Rebooting and Backup Camera Black Screen2013-2019
The IntelliLink/MyLink touchscreen freezes and spontaneously reboots, losing control of radio, climate, navigation and Bluetooth, and often displays a black screen or a frozen backup-camera image. During a reboot, phone calls drop and the rear camera can go dark while in reverse - a visibility concern. Root causes include software glitches, outdated firmware, and occasionally loose display/camera wiring.
Looking for U0184 on a different make?
View U0184 across all makes →Frequently Asked Questions
What does U0184 mean on GMC?▼
U0184 stands for "Lost Communication With Radio." This network code means a module stopped receiving expected communication messages from the radio/audio module over the vehicle's data bus. When the radio module goes offline or its bus connection fails, this code is logged. On some vehicles the audio module also acts as a network gateway, so its loss can trigger several related communication codes. Symptoms are typically a dead or unresponsive radio/infotainment system; it does not affect drivability. On GMC specifically, this code is documented across 3 models.
What causes U0184 on GMC vehicles?▼
Common causes on GMC: Loss of power or ground to the radio/audio module, Blown radio fuse, Wiring or connector fault on the communication bus, Faulty radio/audio control module, Corroded or loose module connector. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix U0184 on a GMC?▼
Repair costs on GMC range from $100 to $2,500, depending on the specific model and root cause.
Which GMC models have U0184 documented?▼
Au7o has documented U0184 on 3 GMC models: Acadia, Sierra 1500, Terrain.