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Cadillac U3003

16 (or similar). • If any low-voltage DTCs are active or recurring: - Do not replace the front camera. - Correct the 12 V power issue using

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceContact a Cadillac/GM service provider for diagnosis if U3003-16 is active or recurring, particularly if the vehicle is being evaluated for a front-view-camera concern covered by PIT6503.
Confidence95%

Quick answer

For applicable U.S. Cadillac EVs, verified GM bulletin PIT6503 identifies U3003-16 (or similar) as a low-voltage/12 V power DTC to check when diagnosing the bulletin’s front-view-camera concern. If it is active or recurring, the bulletin says not to replace the front camera; correct the 12 V power issue using the applicable service information.

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 U3003 mean?

For applicable U.S. Cadillac EVs, verified GM bulletin PIT6503 identifies U3003-16 (or similar) as a low-voltage/12 V power DTC to check when diagnosing the bulletin’s front-view-camera concern. If it is active or recurring, the bulletin says not to replace the front camera; correct the 12 V power issue using the applicable service information.

2. Technical explanation

The supplied official manufacturer communications identify U3003-16, or a similar DTC, in the context of low-voltage/12 V power diagnosis. PIT6503 instructs technicians to check for low-voltage DTCs, including P0562 and U3003-16, after clearing DTCs and operating the vehicle as needed to reproduce the concern. Where low-voltage DTCs are active or recurring, the bulletin directs correction of the 12 V power issue rather than replacement of the B174W Front View Camera module.

3. What system is affected?

Verified evidence associates this code with the vehicle’s low-voltage/12 V power diagnosis and a front-view-camera diagnostic concern. A broader system designation is not yet established by verified evidence.

4. How serious is this code?

Not yet established by verified evidence.

5. Symptoms you may notice

  • An active or recurring U3003-16 (or similar) low-voltage/12 V DTC may be found during diagnosis of the bulletin’s front-view-camera concern.
  • Specific driver-visible symptoms are not yet established by verified evidence.

6. Possible causes

  • A 12 V power issue is identified by PIT6503 as the condition to correct when low-voltage DTCs such as U3003-16 are active or recurring.
  • The specific underlying cause of the 12 V power issue is not yet established by verified evidence.

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

  • Arrange diagnosis by a qualified Cadillac/GM service provider if U3003-16 is active or recurring.
  • Do not authorize front-camera replacement solely on the basis of this diagnostic path when active or recurring low-voltage DTCs are present; PIT6503 directs correction of the 12 V power issue first.
  • Do not perform high-voltage repairs based on this information.

10. Step-by-step troubleshooting

  1. A service technician should check for active or recurring low-voltage/12 V DTCs, including U3003-16 or similar, as directed in PIT6503.
  2. The bulletin describes clearing DTCs and operating the vehicle as needed to reproduce the concern before checking for low-voltage/12 V power DTCs.
  3. If low-voltage DTCs are active or recurring, correct the 12 V power issue using applicable service information.
  4. PIT6503 directs technicians not to replace the B174W Front View Camera module in this situation.

11. When to contact service

Contact a Cadillac/GM service provider for diagnosis if U3003-16 is active or recurring, particularly if the vehicle is being evaluated for a front-view-camera concern covered by PIT6503.

12. What the service center may check

  • Check for active or recurring low-voltage/12 V DTCs such as U3003-16 or P0562.
  • Clear DTCs and operate the vehicle as needed to reproduce the concern, as described by PIT6503.
  • Use applicable service information to correct the 12 V power issue when low-voltage DTCs are active or recurring.
  • Do not replace the B174W Front View Camera module when the bulletin’s active or recurring low-voltage-DTC condition is present.

13. Possible repair or resolution

  • Correct the identified 12 V power issue using applicable service information.
  • Do not replace the B174W Front View Camera module for the verified active-or-recurring low-voltage-DTC scenario in PIT6503.

14. Affected vehicles

15. Related TSBs / service bulletins

  • PIT6503, published April 14, 2026; NHTSA manufacturer communication MC-11031514. It identifies U3003-16 (or similar) among low-voltage/12 V DTCs and directs correction of the 12 V power issue rather than front-camera replacement when such DTCs are active or recurring.
  • PIT6503A, published June 3, 2026; NHTSA manufacturer communication MC-11033726. It contains the same verified direction regarding U3003-16 (or similar), 12 V power correction, and not replacing the front camera.
  • PIT6503B, published June 17, 2026; NHTSA manufacturer communication MC-11034014. It identifies U3003-16 (or similar) among low-voltage/12 V DTCs and directs technicians not to replace the B174W Front View Camera module when those DTCs are active or recurring.

16. Recall information

  • No recall information was supplied in the verified evidence.

17. Official manufacturer information

Official NHTSA-hosted GM manufacturer communications: PIT6503 (MC-11031514), PIT6503A (MC-11033726), and PIT6503B (MC-11034014). Verified applicability: U.S. Cadillac CELESTIQ 2024–2026, LYRIQ 2024–2026, OPTIQ 2024–2026, and VISTIQ 2024–2026. The supplied applicability also includes a duplicate LYRIQ 2024–2025 entry.

19. Frequently asked questions

What does U3003-16 mean in the supplied Cadillac evidence?

The verified bulletins treat U3003-16, or a similar code, as a low-voltage/12 V power DTC to check during the specified diagnostic procedure. A fuller generic code definition is not yet established by verified evidence.

Should the front camera be replaced if U3003-16 is active or recurring?

No. PIT6503 directs technicians not to replace the B174W Front View Camera module when low-voltage DTCs such as U3003-16 are active or recurring; the 12 V power issue should be corrected using applicable service information.

Does this evidence say the vehicle is unsafe to drive or charge?

No. Driveability and charging safety are not yet established by verified evidence.

20. Sources & verification

ReferenceVerified
Cadillac U3003: 16 (or similar). • If any low-voltage DTCs are active… | EV Diagnostics