Recall 21V759 affects 181 2016-2017 Cadillac CT6 vehicles for overly bright park lights. Repair is free at any franchised Cadillac dealer.
Cadillac is recalling 181 2016-2017 CT6 vehicles because the Park/Position lights are excessively bright and fail to meet federal lighting requirements. The extra brightness can affect other drivers' vision and increase crash risk; Cadillac dealers will complete the recall repair free of charge.
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What's wrong?
The headlamp assembly on the 2016-2017 Cadillac CT6 includes the Park/Position lights, the lamps that help mark the vehicle's position when the exterior lighting system is on. Those lights are controlled by electronics inside the lamp assembly and by signals from the body control module, the computer that coordinates body functions such as lighting.
On affected CT6 vehicles, the software in the Park/Position lamp's electronic control unit was programmed incorrectly. The lamp controller misreads the signal from the body control module, so the Park/Position lights produce more light than expected. The lights still work, but the output is too bright for the federal lighting standard. Later production used a jumper harness between the headlamp and body harness to correct the signal path.
There is no warning sign before failure. Owners are not looking for a flicker, a warning light, or a dead lamp; the defect is the lamp brightness itself.
Who's affected?
CT6 headlamp assemblies are listed under Headlights and Exterior lighting, both tied to the same headlamp assembly group.
| 2016 Cadillac CT6 | Headlights |
|---|---|
| 2016 Cadillac CT6 | Exterior lighting |
| 2017 Cadillac CT6 | Headlights |
| 2017 Cadillac CT6 | Exterior lighting |
| Units affected | 181 |
| Field incidents | NHTSA has logged no field incidents to date. |
Not every 2016-2017 Cadillac CT6 sedan is on the list. Check your VIN to confirm whether your specific sedan is included.
What's the safety risk?
Excessive headlight brightness can affect the vision of other drivers and increase the risk of a crash. Use extra care at night or in low light, and schedule the harness repair soon if your VIN is included. Repair is free at any franchised Cadillac dealer.
What should I do?
- Check your VIN to confirm your 2016-2017 Cadillac CT6 is included in this recall.
- Contact a franchised Cadillac dealer to schedule the free in-line headlight jumper harness repair that corrects the excessively bright Park/Position lights.
- Bring the recall notice if Cadillac mailed one. If not, reference recall number 21V759 or GM recall N162016079 when you call.
- Drive cautiously until the repair is complete, since the Park/Position lights can affect other drivers' vision.
- Call Cadillac customer service at 1-800-458-8006 with questions about scheduling or dealer availability.
What happens at the repair
At the dealer, a Cadillac technician installs right and left side inline headlight jumper harnesses so the park and position lights meet the recall repair plan. The recall repair is available now, and parts and labor are free. GM's standard reimbursement plan covers qualifying repairs paid before the recall notice. Bring receipts or repair documentation to the service desk, or contact Cadillac customer service at 1-800-458-8006 to ask how to submit the claim.
| Reimbursement | Reimbursement available |
|---|
Timeline
| September 29, 2021 | NHTSA published the recall |
|---|---|
| September 29, 2021 | Dealer notification began |
| September 29, 2021 | Dealer notification ended |
| November 3, 2021 | Owner notification mailed |
| November 15, 2021 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 21V759?
Recall 21V759 covers 181 2016-2017 Cadillac CT6 vehicles with Park/Position lights that are excessively bright. The lighting condition fails Federal Motor Vehicle Safety Standard 108 and affects other drivers' vision, increasing crash risk. Cadillac dealers install right and left side in-line headlight jumper harnesses for free.
What should I do if my 2016-2017 Cadillac CT6 is on this recall?
Check your VIN to confirm your specific CT6 is included in recall 21V759. If it is included, contact a franchised Cadillac dealer to schedule installation of the right and left side in-line headlight jumper harnesses. Reference GM recall number N162016079 when you call.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost, and Cadillac dealers install the right and left side in-line headlight jumper harnesses free of charge.
Is it safe to drive my Cadillac CT6 before the recall repair?
The recall does not include a do-not-drive order. The stated risk is that excessively bright Park/Position lights affect other drivers' vision and increase crash risk. Confirm your VIN, then schedule the free dealer repair so the lighting meets the required safety standard.
When were owners notified about recall 21V759?
Owner notification letters were mailed November 3, 2021. If you bought the CT6 used or never received a letter, check your VIN to confirm whether your specific vehicle is included, then call a Cadillac dealer with recall number 21V759 or GM number N162016079.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/21V759000 |
|---|---|
| Cadillac customer service | 1-800-458-8006 |
| NHTSA recall # | 21V759 |
| NHTSA recall # (full) | 21V759000 |
Source documents
-
Download Recall Document (PDF) (PDF) - Download Quarterly Report (PDF)
- Download Misc. Document (PDF)
- Download Recall Document (PDF) (PDF)
- Download Owner Notification Letter (PDF)
- Download Owner Notice (PDF)
- Download Recall Report (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 20, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →