NHTSA Complaint #11689733 — 2014 CADILLAC CTS

I am filing a complaint against Wagner Cadillac in Tyler, Texas, regarding mishandled recall service that resulted in severe damage to my 2014 Cadillac CTS Vsport (3.6 Twin-Turbo). Timeline of Events: Wagner Cadillac performed Recall #N192279370 (rear differential). At the time, only the differential code was present. Their own multipoint inspection showed no issues with the cooling or transmission systems. Immediately after recall service, my rear axle warning light came on for the first time. Shortly after, the transmission cooler line at the radiator burst, causing coolant and transmission fluid to mix. This led to overheating, hard shifting, and slipping. To limp the car home safely, I used a stop-leak additive only after the breakdown. The Magnuson-Moss Warranty Act clearly states warranty coverage cannot be denied unless the additive directly caused the failure, which it did not. The damage had already occurred from the ruptured line. When I returned the vehicle, Wagner Cadillac falsely accused me of voiding coverage due to the additive. They then refused to repair my transmission or cooling system, leaving me with a $30,000+ estimate. Why They Are Responsible: The problems began only after recall work. During service, Wagner Cadillac could have: Over-pressurized the system during testing. Improperly disturbed or reinstalled transmission cooler lines. Failed to secure or bleed the cooling system. Any of these actions could have caused the rupture. Their refusal to acknowledge this shifts unlawful blame onto me. Additional Concerns: Instead of helping me, Wagner Cadillac attempted to solicit me to sell them my broken car and buy another vehicle from them — both before and after they denied repairs. This is unethical and exploitative. Impact: I paid cash for this car not long ago. I have now lost reliable transportation, lost my job due to lack of mobility, and face financial INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)