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Cadillac B1C64

PIT6274B Published date: 01/8/2025 Preliminary I

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceContact a Cadillac/GM service provider if the Service Camera System message occurs or B1C64 is found. Reference PIT6274C.
Confidence95%

Quick answer

For a 2025 Cadillac LYRIQ in the United States, DTC B1C64 is covered by GM preliminary information PIT6274C. The bulletin says an intermittent “Service Camera System” message may occur and B1C64 may be stored as current or history because of a software anomaly. The bulletin directs technicians not to replace parts at this time.

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 B1C64 mean?

For a 2025 Cadillac LYRIQ in the United States, DTC B1C64 is covered by GM preliminary information PIT6274C. The bulletin says an intermittent “Service Camera System” message may occur and B1C64 may be stored as current or history because of a software anomaly. The bulletin directs technicians not to replace parts at this time.

2. Technical explanation

Verified NHTSA-posted GM manufacturer communications PIT6274B and PIT6274C identify B1C64 as one of the possible codes associated with an intermittent Service Camera System message. The stated cause is a false DTC and/or message caused by a software anomaly. The supplied evidence does not provide a component-level diagnostic definition for B1C64.

3. What system is affected?

Camera system, based on the verified Service Camera System message described in PIT6274B/PIT6274C.

4. How serious is this code?

Not yet established by verified evidence.

5. Symptoms you may notice

  • An intermittent “Service Camera System” message may be displayed.
  • B1C64 may be stored as a current or history DTC.

6. Possible causes

  • A false DTC and/or Service Camera System message due to a software anomaly, as stated in PIT6274B/PIT6274C.

7. Can I still drive the vehicle?

Not yet established by verified evidence.

8. Can I charge the vehicle?

Not yet established by verified evidence.

9. What you can safely do

  • Record whether the Service Camera System message is intermittent and whether B1C64 is current or history.
  • Arrange diagnosis with a Cadillac/GM service provider and provide the bulletin reference PIT6274C.
  • Do not authorize parts replacement solely on the basis of this bulletin; PIT6274C states not to replace any parts at this time.

10. Step-by-step troubleshooting

  1. A service technician can check for B1C64 as current or history in connection with the intermittent Service Camera System message.
  2. A service technician should consult the current GM preliminary information bulletin PIT6274C. Further diagnostic steps are not established by the supplied verified evidence.

11. When to contact service

Contact a Cadillac/GM service provider if the Service Camera System message occurs or B1C64 is found. Reference PIT6274C.

12. What the service center may check

  • Confirm vehicle applicability: 2025 Cadillac LYRIQ, United States.
  • Check whether B1C64 is present as a current or history DTC.
  • Check for the intermittent Service Camera System message.
  • Review GM preliminary information PIT6274C.

13. Possible repair or resolution

  • PIT6274C directs: do not replace any parts at this time.
  • A final repair or software-update resolution is not established by the supplied verified evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • PIT6274C, published July 16, 2025, NHTSA Manufacturer Communication PDF 11020879 and 11020880: identifies an intermittent Service Camera System message and B1C64, B020A, or B1C48 as possible current or history DTCs; states the condition is a false DTC and/or message due to a software anomaly; directs not to replace parts at this time. https://static.nhtsa.gov/odi/tsbs/2025/MC-11020879-0001.pdf
  • PIT6274B, published January 9, 2025 (bulletin published date January 8, 2025), NHTSA Manufacturer Communication PDF 11012940: earlier verified version describing the same intermittent Service Camera System message, possible B1C64/B020A/B1C48 codes, and software-anomaly cause. https://static.nhtsa.gov/odi/tsbs/2025/MC-11012940-0001.pdf

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Verified official manufacturer communication evidence is available through NHTSA: PIT6274C, PDF 11020879, published July 16, 2025: https://static.nhtsa.gov/odi/tsbs/2025/MC-11020879-0001.pdf

19. Frequently asked questions

What does B1C64 mean on a 2025 Cadillac LYRIQ?

The supplied verified evidence does not provide a component-level definition. GM PIT6274C identifies B1C64 as a possible current or history code when an intermittent Service Camera System message occurs.

What causes B1C64 under PIT6274C?

PIT6274C states that the message and/or DTC can be false because of a software anomaly.

Should camera-system parts be replaced for B1C64?

PIT6274C states: do not replace any parts at this time.

Is it safe to drive or charge with B1C64?

Not yet established by verified evidence.

20. Sources & verification

Verified
Cadillac B1C64: PIT6274B Published date: 01/8/2025 Preliminary I | EV Diagnostics