Cadillac U363D
U3620, U3622, U3624, U3626, U3628, U362A, U362C, U362E
Quick answer
For Cadillac LYRIQ model years 2023–2024 in the US, U363D is identified in the supplied record only as part of a listed DTC group. Its diagnostic meaning, vehicle effects, and repair are not yet established by verified evidence.
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 U363D mean?
For Cadillac LYRIQ model years 2023–2024 in the US, U363D is identified in the supplied record only as part of a listed DTC group. Its diagnostic meaning, vehicle effects, and repair are not yet established by verified evidence.
2. Technical explanation
The supplied diagnostic record labels U363D with the canonical title and meaning “U3620, U3622, U3624, U3626, U3628, U362A, U362C, U362E.” No system name or fault description is provided. NHTSA-hosted manufacturer communications PIE0788B and PIE0788C show that U363D was removed from the listed DTCs in the June 10, 2024 revision. The supplied evidence does not explain why it was removed or establish a technical interpretation of U363D.
3. What system is affected?
Not yet established by verified evidence.
4. How serious is this code?
Unknown. The supplied record does not assign a severity.
5. Symptoms you may notice
- Not yet established by verified evidence.
6. Possible causes
- Not yet established by verified evidence.
7. Can I still drive the vehicle?
Unknown. The supplied record does not establish whether driving is safe with U363D.
8. Can I charge the vehicle?
Unknown. The supplied record does not establish whether charging is safe with U363D.
9. What you can safely do
- Record the exact DTC(s), warning messages, and date/time they appeared.
- Have a qualified Cadillac/GM service facility diagnose the vehicle using applicable service information.
- Do not attempt high-voltage component diagnosis or repair based on this code alone.
10. Step-by-step troubleshooting
- Confirm the code with a suitable scan tool and document any accompanying DTCs. Further diagnostic steps are not yet established by verified evidence.
- Review the applicable Cadillac/GM service information for the vehicle and current diagnostic condition. The supplied evidence does not provide a test procedure.
11. When to contact service
Service need is unknown in the supplied diagnostic record. A qualified Cadillac/GM service facility can evaluate the stored code and any accompanying warnings or DTCs.
12. What the service center may check
- Verify the presence and status of U363D and any accompanying DTCs.
- Review current manufacturer service information applicable to the vehicle. No specific inspection, measurement, or component test is established by the supplied evidence.
13. Possible repair or resolution
- Not yet established by verified evidence.
14. Affected vehicles
- Cadillac LYRIQ · 2023–2024 · US
15. Related TSBs / service bulletins
- NHTSA Manufacturer Communication PDF 11004345, PIE0788B, published June 10, 2024: the evidence summary states that U363D was removed from the listed DTCs in the revision. It also lists the additional keywords U3620, U3622, U3624, U3626, U3628, U362A, U362C, and U362E.
- NHTSA Manufacturer Communication PDF 11004943, PIE0788C, published June 28, 2024: the evidence summary states that U363D was among DTCs removed in the June 10, 2024 revision and notes that the need for gathering further information was ended on June 26, 2024.
16. Recall information
- No recall information was supplied as verified evidence.
17. Official manufacturer information
Applicable verified sources: NHTSA-hosted Cadillac/GM manufacturer communications PIE0788B (June 10, 2024), https://static.nhtsa.gov/odi/tsbs/2024/MC-11004345-0001.pdf; and PIE0788C (June 28, 2024), https://static.nhtsa.gov/odi/tsbs/2024/MC-11004943-0001.pdf. Applicability supplied for this record: 2023–2024 Cadillac LYRIQ, US.
19. Frequently asked questions
What does Cadillac U363D mean?
The supplied evidence does not provide a fault-description meaning for U363D. The record only groups it with U3620, U3622, U3624, U3626, U3628, U362A, U362C, and U362E.
Which vehicles are covered by the supplied applicability record?
The supplied applicability record identifies US-market 2023–2024 Cadillac LYRIQ vehicles.
Is U363D covered by a manufacturer communication?
Yes. NHTSA-hosted manufacturer communications PIE0788B and PIE0788C reference U363D in their revision summaries. The summaries state that U363D was removed from the listed DTCs in the June 10, 2024 revision.
Can I drive or charge with U363D?
Not yet established by verified evidence. The supplied record marks both driving and charging status as unknown.