Cadillac U3006
to-Bumper coverage (Canada Base Warra
Quick answer
For a 2023 Cadillac LYRIQ in the US, U3006 with symptom 16 is listed in Cadillac/NHTSA communications PIC6500A and PIC6500B. The verified guidance is: verify the customer concern and do not replace the controller solely because this code is present; if the listed codes are not present, use normal Service Information (SI) diagnostics.
This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.
Watch Videos
Relevant videos play here without leaving this diagnostic page.
No sufficiently relevant embeddable video has been accepted for this diagnostic yet.
Videos are supporting material and never override OEM or regulator evidence.
1. What does U3006 mean?
For a 2023 Cadillac LYRIQ in the US, U3006 with symptom 16 is listed in Cadillac/NHTSA communications PIC6500A and PIC6500B. The verified guidance is: verify the customer concern and do not replace the controller solely because this code is present; if the listed codes are not present, use normal Service Information (SI) diagnostics.
2. Technical explanation
The supplied evidence identifies U3006 symptom 16 as one of several DTCs addressed by Cadillac communication PIC6500A, later updated as PIC6500B. The source material does not provide a decoded definition for U3006, a component-level fault description, or a confirmed technical root cause.
3. What system is affected?
Not yet established by verified evidence.
4. How serious is this code?
Unknown. The supplied evidence does not assign a severity level.
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 evidence does not establish whether the vehicle is safe to drive with U3006 symptom 16.
8. Can I charge the vehicle?
Unknown. The supplied evidence does not establish whether the vehicle is safe to charge with U3006 symptom 16.
9. What you can safely do
- Have a Cadillac dealer or qualified service facility verify the customer concern.
- Do not replace a controller solely because U3006 symptom 16 is present, according to PIC6500A.
- Use normal Cadillac Service Information diagnostics when the listed DTCs are not setting.
10. Step-by-step troubleshooting
- Confirm whether U3006 symptom 16 is present and document any accompanying DTCs.
- Compare the stored codes with the DTC list in PIC6500A/PIC6500B.
- Follow applicable normal Service Information diagnostics when the communication does not apply.
11. When to contact service
Cadillac service is appropriate because the official communication directs dealers to verify the concern and, for the listed DTCs, avoid controller replacement while engineering resolution is addressed.
12. What the service center may check
- Verify the customer concern.
- Check whether U3006 symptom 16 and other DTCs listed in PIC6500A/PIC6500B are setting.
- If none of the listed DTCs are setting, follow normal SI diagnostics.
13. Possible repair or resolution
- PIC6500A states that engineering was aware of the issue and was working on a resolution.
- PIC6500A directs dealers not to replace the controller if any listed DTC, including U3006 symptom 16, is present.
- The supplied excerpt from PIC6500B confirms U3006 symptom 16 remains in the addressed DTC list. A final repair procedure is not established by the supplied verified evidence.
14. Affected vehicles
- Cadillac LYRIQ · 2023 · US
15. Related TSBs / service bulletins
- PIC6500A — NHTSA Manufacturer Communication 10237683, published May 24, 2023. It includes U3006 symptom 16 and directs dealers to verify the concern and not replace the controller for the listed DTCs.
- PIC6500B — NHTSA Manufacturer Communication 11007683, published September 11, 2024. The supplied excerpt includes U3006 symptom 16 in its DTC list.
- Official source: https://static.nhtsa.gov/odi/tsbs/2023/MC-10237683-9999.pdf
- Official source: https://static.nhtsa.gov/odi/tsbs/2024/MC-11007683-0001.pdf
16. Recall information
- Not yet established by verified evidence.
17. Official manufacturer information
Verified applicability in the supplied database: 2023 Cadillac LYRIQ, US. The database diagnostic title and meaning appear truncated and are not sufficient to establish a technical definition of U3006.
19. Frequently asked questions
Does U3006 symptom 16 mean the controller should be replaced?
No. PIC6500A specifically states not to replace the controller if any DTC in its table, including U3006 symptom 16, is setting.
What should happen if U3006 symptom 16 is not present?
PIC6500A states that if none of the DTCs in its listed table are setting, follow normal SI diagnostics.
Is there a confirmed cause for U3006 symptom 16?
Not yet established by verified evidence.