Cadillac Escalade power loss at speeds above 79 mph with no fix available on Cadillac Escalade

Some Cadillac Escalade owners report experiencing power loss at speeds above 79 mph, which may be linked to several underlying issues. These include reduced engine power warnings, often indicating a malfunction in engine management sensors or the Engine Control Unit (ECU). Additionally, transmission failure has been noted as a common problem, as highlighted in an NHTSA defect investigation. A faulty Throttle Position Sensor (TPS) is frequently cited as a cause of reduced engine power, necessitating inspection and potential replacement of the TPS, wiring harness, and connector. Furthermore, some owners have encountered messages related to speed limitations due to issues with the Magniride suspension system. While no specific fix is outlined for the power loss at high speeds, addressing these mechanical concerns is crucial, and it is recommended to consult a certified mechanic or dealership for a comprehensive diagnosis and resolution.