GMC · Canada · Mod
GMC Yukon XL, Yukon +2 more: Lights and Instruments
Affects GMC Yukon XL, Yukon, Sierra, Sierra HD · 2021–2024 — about 164K vehicles.
The hazard
Issue: On certain vehicles, the automatic headlamps may not turn on soon enough as it becomes dark outside. Canadian regulations require automatic headlamps to turn on when the ambient light level drops below a certain point (1000 lux). Safety Risk: Headlamps that don't turn on as it becomes dark outside could reduce visibility and increase the risk of a crash. Corrective Actions: General Motors will notify owners by mail and send a wireless over-the-air software update to eligible vehicles to update the body control module (BCM) software. Alternatively, you may schedule an appointment to have the update performed at a GM dealership.
What to do
Contact your dealer; the remedy details were not included in the filing.