Georgia Advice: 2024 Blackwing (previous Buyback) Is Back In The Shop For 35+ Days For The Same Issue. Gm Refusing Second Buyback.

Location: Augusta, GA

Looking for some advice on a nightmare situation. I’m a Georgia resident and purchased a 2024 Cadillac CT4-V Blackwing in October 2025.

At the time of sale, I was informed it was a manufacturer buyback. The dealer showed me GM-certified paperwork stating that the original issue a short in the ECM wiring harness, had been fully repaired and inspected. Based on that certification, I bought the car for my commute to Atlanta.

The Timeline:

• Feb 26, 2026: After 4 months and 3,000 miles, the car shuddered, flashed "Reduced Acceleration," and the transmission locked in gear. I limped it to a local Cadillac dealer.
• March 3, 2026: They kept it for 5 days, claiming a service bulletin for "grounding points" fixed it. I picked it up at 5:50 PM, drove 5 miles, and the exact same catastrophic failure happened again.
• March 4, 2026 – Present: Dropped it back off the next morning. It has now been in the shop for 35+ consecutive days (and over 40 days total for this issue).

The Current Status:

• The Repair: The tech finally found the "smoking gun": severe corrosion (green death) and electrical arcing in the ECM X1 connector the exact same issue that caused the original buyback. They have replaced the ECM, the TCM (which was physically overheating from a short), and are now attempting to re-pin the harness.
• The Identity Crisis: The electrical "noise" was so bad that during programming, the car’s computer was misidentifying itself as a CT5-V instead of a CT4-V.
• Communication Issues: The tech just updated me that they cleared "Bus 1" communication errors, but "Bus 3" is still down. The car is "moving" but far from fixed.
• GM’s Response: I opened a case with GM Customer Care. They told me flat out: "We don't buy back cars that have already been bought back." They offered a vague loyalty credit ($500–$5k) but won't commit to a specific number or a solution if the car remains unfixable.

My Questions:

1. Re-repurchase: GM claims they "can't" buy it back again because it was already a buyback. Is there any legal basis for this? Under Georgia law (O.C.G.A. § 10-1-790), the manufacturer warrants the repair of the original "nonconformity" for 1 year/12,000 miles. Since this is the exact same issue, does that override their "one-time-only" policy?
2. 30-Day Rule: Does the 30-day out-of-service limit for the Georgia Lemon Law still apply to a reacquired vehicle if the certified repair fails during the 1-year warranty period?
3. Next Steps: Should I be pushing for a full engine harness replacement at this point, or should I be strictly demanding a refund/replacement since they've already exceeded 30 days?

I’m paying for a car I can’t drive, and the manufacturer is basically telling me I’m stuck with a lemon because it was already a lemon once before. Any Georgia consumer lawyers have experience with "Lemon-on-Lemon" cases? My confidence in the manufacturer and the abilities of the service department to resolve this issue led me to having no confidence in their future abilities.