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Chevrolet U1624

Correction Please update the K73 Tel

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceService is appropriate because the verified manufacturer communications identify a K73 Telematics Control Module software concern and reference an update correction. The evidence does not establish whether service is mandatory or urgent.
Confidence95%

Quick answer

For certain 2025–2026 Chevrolet Equinox vehicles in the US, DTC U1624 is covered by GM communications PIT6411 and PIT6411A concerning a K73 Telematics Control Module software issue. Reported concerns include loss of OnStar connectivity, internet/data connection loss, and a “Service Emergency Calling” message.

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 U1624 mean?

For certain 2025–2026 Chevrolet Equinox vehicles in the US, DTC U1624 is covered by GM communications PIT6411 and PIT6411A concerning a K73 Telematics Control Module software issue. Reported concerns include loss of OnStar connectivity, internet/data connection loss, and a “Service Emergency Calling” message.

2. Technical explanation

The verified manufacturer communication identifies the cause as a K73 Telematics Control Module software concern. The communication subject is “Correction Please update the K73 Tele,” which supports that this diagnostic is associated with a telematics-module software update correction. No further diagnostic interpretation is established by the supplied evidence.

3. What system is affected?

K73 Telematics Control Module / telematics connectivity functions.

4. How serious is this code?

Unknown. The supplied evidence does not assign a severity level.

5. Symptoms you may notice

  • Loss of OnStar connectivity.
  • Loss of internet connection and data.
  • A “Service Emergency Calling” message.
  • DTC U1624 may be found during diagnosis.

6. Possible causes

  • K73 Telematics Control Module software concern.

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 service with a Chevrolet dealer or qualified service facility and provide DTC U1624 plus any connectivity or emergency-calling messages.
  • Do not attempt high-voltage or module repair procedures based on this information.

10. Step-by-step troubleshooting

  1. Verify whether the vehicle is a US-market 2025–2026 Chevrolet Equinox.
  2. Document any loss of OnStar, internet/data connectivity, or “Service Emergency Calling” message.
  3. Have a service facility check for DTC U1624 and the applicable manufacturer communication.

11. When to contact service

Service is appropriate because the verified manufacturer communications identify a K73 Telematics Control Module software concern and reference an update correction. The evidence does not establish whether service is mandatory or urgent.

12. What the service center may check

  • Check for DTC U1624.
  • Check for U3000 with symptom 46 or 49, as referenced in the manufacturer communication.
  • Check for B19DA, as referenced in the manufacturer communication.
  • Evaluate the K73 Telematics Control Module software concern and applicable update correction.

13. Possible repair or resolution

  • Apply the applicable K73 Telematics Control Module software update correction in accordance with manufacturer service information. The supplied evidence does not provide the detailed procedure or confirm outcomes.

14. Affected vehicles

15. Related TSBs / service bulletins

  • PIT6411 — NHTSA Manufacturer Communication PDF 11020681; published July 2, 2025. It identifies U1624 in connection with a K73 Telematics Control Module software concern.
  • PIT6411A — NHTSA Manufacturer Communication PDF 11022782; published August 30, 2025. It identifies U1624 in connection with a K73 Telematics Control Module software concern.

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Official NHTSA-hosted manufacturer communications: PIT6411 (https://static.nhtsa.gov/odi/tsbs/2025/MC-11020681-0001.pdf) and PIT6411A (https://static.nhtsa.gov/odi/tsbs/2025/MC-11022782-0001.pdf). Verified applicability: Chevrolet Equinox, model years 2025–2026, US market.

19. Frequently asked questions

What does U1624 mean on a 2025–2026 Chevrolet Equinox?

The supplied Chevrolet manufacturer communications associate U1624 with a K73 Telematics Control Module software concern and a correction to update the K73 telematics module.

What may happen when U1624 is present?

The communications list possible customer concerns of loss of OnStar connectivity, loss of internet connection and data, and a “Service Emergency Calling” message.

Is U1624 a charging or high-voltage battery fault?

Not yet established by verified evidence. The supplied evidence identifies a telematics-module software concern and does not identify a charging or high-voltage battery fault.

Can I continue driving with U1624?

Not yet established by verified evidence.

Is there a recall for U1624?

Not yet established by verified evidence.

20. Sources & verification

Verified
Chevrolet U1624: Correction Please update the K73 Tel | EV Diagnostics