U023C on Chevrolet: How to Diagnose & Fix
Lost Communication With Image Processing Module "C"
1 Chevrolet model · 1 documented issue
U023C on Chevrolet by model: symptoms, diagnosis and fix
Owners report the camera display failing: a black screen with a red or error camera icon when shifting to reverse, sometimes with every camera view black when selected from the menu. In the linked threads the cameras came back on their own after a few seconds or a few hours. Applies to: Owner reports from 2022 Silverado 1500 Trail Boss trucks (one with the 13-inch screen of the 2022 refresh). GM's reset instructions PIC6566C describe the same black reverse-camera screen on 2024–2026 Silverado LD and many other GM models.
Common Symptoms
- Black screen with a camera error icon when shifting to reverse
- Backup camera blacks out for a few seconds, only at night
How to Fix
Have the dealer check for current DTCs and software. GM's PIC6566C describes the black screen with a triangle and crossed-out camera on startup in reverse, lists DTCs such as U023C, B1596 and B1A62, attributes it to software anomalies and directs a radio or image/video processing module reset, replacing the video processing module on a repeat visit. Summarized from the owner reports linked here; not a manufacturer finding. Your vehicle's equipment and history may differ; a technician must confirm the cause.
Sources for this issue (3)
U023C code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does U023C mean on a Chevrolet?
U023C stands for "Lost Communication With Image Processing Module "C"." A generic (SAE U0xxx block) network/communication code: the module reporting U023C has stopped receiving expected messages from Image Processing Module C (IPM-C/IPA-C), one of the camera/vision processing controllers used by driver-assistance features. The definition is standardized, though which physical camera module is designated "C" varies by vehicle. Camera-based features (lane keeping, forward collision warning, automatic emergency braking, surround/parking views) are typically disabled while it is active. It reports a loss of communication, not proof the camera itself has failed — other bus or battery/ignition codes should be diagnosed first, since diagnosing U023C ahead of them is a common misdiagnosis. On Chevrolet it is documented across 1 model: Silverado 1500.
What are the most common causes of U023C?
The most common causes of U023C are: Blown fuse or loss of power/ground to the image processing module, Damaged, corroded, or loose connector at the camera/image processing module, Open, short, or high resistance in the CAN bus wiring to the module, Failed image processing module (internal fault), Missing programming/calibration after module replacement or a windshield/camera swap — a replacement module must be programmed and calibrated to the vehicle, Low system voltage or a weak battery causing modules to drop off the bus. The specific cause varies by vehicle.
How much does it cost to fix U023C on a Chevrolet?
Repair costs vary widely with the root cause and Chevrolet model; each issue on this page carries its own estimate where one is published.
Looking for U023C on a different make?
View U023C across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.