GM has acknowledged and addressed an issue affecting the 2023 and 2024 Cadillac Lyriq models, relating to the headlights drifting during driving. 

Problem Description: The headlights of affected Cadillac Lyriq units may change their aim while driving, drifting either too high or too low.  When the vehicle is first turned on, the headlights likely have the correct initial aim. The problem becomes evident while the crossover is in motion.

Fix: GM has issued a software update to address this issue. Dealerships are instructed to:

• Check Lyriq units in their inventory for the problem.
• Correct it if any vehicles are affected.
• Provide the fix to customers who bring a Lyriq to the dealership.  The remedy involves reprogramming the Headlamp Control Module.

Service Bulletin

Initial Aim: Affected Lyriq units have a correct initial aim when the vehicle is turned on, but the problem becomes evident while driving.
Fix: GM has issued a service update to address this issue. The remedy involves reprogramming the Headlamp Control Module (RPO code TGE) so that the Headlight Level-Upper no longer malfunctions and drifts the headlights. Importantly, no parts are needed for this repair, as it is entirely a software fix.
Duration: The drifting headlight fix is available until the New Vehicle Limited Warranty period ends.

Other Updates: GM has also issued other fixes and updates for the Lyriq, including adjustments to the dashboard storage tray and software updates for onboard modules.

Lyriq Specs: The 2024 Cadillac Lyriq is available in both RWD and AWD variants. The RWD version is powered by a single motor rated at 340 horsepower, while the AWD version features two electric motors with a combined output of 500 horsepower. The Lyriq uses Ultium battery and GM Ultium Drive motor technologies, offering a full-charge range of 314 miles (RWD) and 307 miles (AWD).

You can refer to the source for more details. If you own a Lyriq, make sure to visit your dealership for the necessary software update to ensure optimal headlight performance. 

Wondering what to do about your car troubles? Explore your options today! Consider claims such as:

• Breach of Implied Warranty Claim: Your vehicle should meet certain expectations of quality and performance, and if it doesn't, you may have a case under this claim.
• Breach of Express Warranty Claim: Manufacturers must stand by the promises made in their warranties. If they don't, you could have grounds for this claim.
• Lemon Law Claim: If your vehicle is plagued by recurring issues, lemon laws may provide a remedy to protect your rights as a consumer.
• Deceptive Practices Claim: Misleading or deceptive actions by the manufacturer or dealer could entitle you to compensation under deceptive practices laws.
• Magnuson-Moss Claim: Federal law ensures that consumers receive the benefits of warranties and fair treatment for defective products.

Call for a Free Consultation on Your Cadillac headlight problem

Sources

1. gmauthority.com - GM To Fix Cadillac Lyriq Headlight Drifting Issue
2. reddit.com - GM to Fix Lyriq Headlight Drifting Issue : r/CadillacLyriq
3. cadillacforums.com - Lyriq headlight issues
4. lemberglaw.com - 2024 Cadillac Lyriq Headlight Function and Alignment Issues
5. youtube.com - Lyriq headlight droop.