U0028 on Chevrolet
Vehicle Communication Bus A
U0028 on Chevrolet vehicles indicates vehicle communication bus a. Au7o has documented this code across 1 Chevrolet model — most commonly on Camaro. A general communication fault on Vehicle Communication Bus 'A' — a manufacturer-assigned data bus designation (which may be CAN or another protocol depending on the vehicle). A module set this code because expected messages on Bus A are missing, corrupted, or the bus is not communicating normally. Typical repair costs on Chevrolet range from $300 to $1,500, depending on the specific model and root cause.
Common Causes of U0028
- •Open, shorted, or corroded Bus A wiring/connectors
- •Bad or loose connector at a module on Bus A
- •Failed control module dragging Bus A down
- •Poor power or ground to a networked module
- •Out-of-spec bus termination
U0028 on Chevrolet by Model
Chevrolet Camaro(1 issue)
- MyLink / HMI Infotainment Module Failure (U0028 Blank Screen, No Audio/Camera)2013-2019
The MyLink infotainment system on 2013-2018 Camaros can suddenly go to a blank/black screen with total loss of audio, touchscreen, and backup-camera functions. The typical stored code is U0028 (communication bus / serial data fault), pointing at the HMI (Human-Machine Interface) module, the central computer of the MyLink system. Voltage spikes from a dead/replaced battery or a jump-start commonly damage the HMI. Beyond the loss of features, the fault can keep modules awake and cause a parasitic battery drain. GM technical bulletin PIC6073E addresses U0028 on this platform.
Looking for U0028 on a different make?
View U0028 across all makes →Frequently Asked Questions
What does U0028 mean on Chevrolet?▼
U0028 stands for "Vehicle Communication Bus A." A general communication fault on Vehicle Communication Bus 'A' — a manufacturer-assigned data bus designation (which may be CAN or another protocol depending on the vehicle). A module set this code because expected messages on Bus A are missing, corrupted, or the bus is not communicating normally. On Chevrolet specifically, this code is documented across 1 model.
What causes U0028 on Chevrolet vehicles?▼
Common causes on Chevrolet: Open, shorted, or corroded Bus A wiring/connectors, Bad or loose connector at a module on Bus A, Failed control module dragging Bus A down, Poor power or ground to a networked module, Out-of-spec bus termination. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix U0028 on a Chevrolet?▼
Repair costs on Chevrolet range from $300 to $1,500, depending on the specific model and root cause.
Which Chevrolet models have U0028 documented?▼
Au7o has documented U0028 on 1 Chevrolet model: Camaro.