Chevrolet U223B
test the LVDS connection at the radio and at the display that is going blank, where the wire meets the connector body. If the
Quick answer
For applicable 2024–2026 Chevrolet Equinox vehicles in the US, DTC U223B is addressed in Chevrolet bulletin PIT6393L in connection with a blank/black display concern. The bulletin directs a wiggle test of the LVDS connection at the radio and at the display that goes blank, at the point where the wire meets the connector body. The supplied evidence is truncated and does not establish the complete diagnostic result or repair procedure.
This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.
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1. What does U223B mean?
For applicable 2024–2026 Chevrolet Equinox vehicles in the US, DTC U223B is addressed in Chevrolet bulletin PIT6393L in connection with a blank/black display concern. The bulletin directs a wiggle test of the LVDS connection at the radio and at the display that goes blank, at the point where the wire meets the connector body. The supplied evidence is truncated and does not establish the complete diagnostic result or repair procedure.
2. Technical explanation
The verified NHTSA-hosted manufacturer communication, PIT6393L, identifies U223B in the context of a display that goes blank/black and then recovers. It instructs technicians to wiggle-test the LVDS connection at both the radio and the affected display, specifically where the wire meets the connector body. LVDS is a display-video connection. No further fault interpretation, connector condition, repair instruction, or component replacement is established by the supplied evidence.
3. What system is affected?
Radio-to-display LVDS connection; the supplied evidence does not establish a broader system name.
4. How serious is this code?
Unknown. The diagnostic record lists severity as unknown.
5. Symptoms you may notice
- Blank/black display that recovers, as described in bulletin PIT6393L.
- DTC U223B may be set in the bulletin scenario.
6. Possible causes
- A concern involving the LVDS connection at the radio or at the display is indicated by the bulletin's required wiggle test.
- The specific underlying cause is not yet established by verified evidence.
7. Can I still drive the vehicle?
Unknown. The diagnostic record lists safe-to-drive status as unknown.
8. Can I charge the vehicle?
Unknown. The diagnostic record lists safe-to-charge status as unknown.
9. What you can safely do
- If the display becomes blank/black or U223B is present, arrange diagnosis by a qualified Chevrolet service facility.
- Document whether the display blanks and then recovers, since that condition is described in PIT6393L.
- Do not attempt high-voltage repair procedures. High-voltage involvement is not established by the supplied evidence.
10. Step-by-step troubleshooting
- Verified service-direction from PIT6393L: wiggle-test the LVDS connection at the radio and at the display that is going blank, where the wire meets the connector body.
- The supplied evidence does not establish the remaining test steps, expected observations, or decision path.
11. When to contact service
Contact a Chevrolet service facility for diagnosis, particularly when a blank/black display that recovers occurs or U223B is stored. The supplied bulletin contains technician-directed LVDS connection testing.
12. What the service center may check
- Check for the blank/black display concern described in PIT6393L, including whether it recovers.
- Perform the bulletin-directed wiggle test of the LVDS connection at the radio and at the affected display, where the wire meets the connector body.
- Additional service checks are not yet established by verified evidence.
13. Possible repair or resolution
- Not yet established by verified evidence. The supplied bulletin excerpt ends before a repair outcome or resolution is provided.
14. Affected vehicles
- Chevrolet Equinox · 2024–2026 · US
15. Related TSBs / service bulletins
- PIT6393L, NHTSA Manufacturer Communication PDF 11032781, published May 14, 2026. It applies in the supplied data to 2024–2026 Chevrolet Equinox vehicles in the US and addresses blank/black display concerns, U223B/U223C context, and LVDS connection wiggle testing.
16. Recall information
- No recall is established by the supplied verified evidence.
17. Official manufacturer information
Official source: NHTSA-hosted Chevrolet manufacturer communication PIT6393L, PDF 11032781: https://static.nhtsa.gov/odi/tsbs/2026/MC-11032781-0001.pdf
19. Frequently asked questions
What does U223B mean on a 2024–2026 Chevrolet Equinox?
The supplied Chevrolet record labels U223B with a truncated description directing testing of the LVDS connection at the radio and the display that goes blank. PIT6393L discusses it with a blank/black display concern that recovers. A complete code definition is not established by the supplied evidence.
Is U223B associated with a blank screen?
Yes. PIT6393L specifically describes a blank/black screen concern in which displays go blank and then recover and/or U223B or U223C is set.
What does Chevrolet's bulletin direct technicians to check?
The bulletin directs a wiggle test of the LVDS connection at the radio and at the display that is going blank, where the wire meets the connector body.
Can I drive or charge with U223B?
The supplied diagnostic record marks both safe-to-drive and safe-to-charge status as unknown.