Some GMC Acadia owners report experiencing persistent throttle sensor indicator and power reduced warnings even after replacing the throttle body sensor. This issue may arise if the newly installed throttle-position sensor is still faulty, resulting in incorrect data being sent to the vehicle's computer. Additionally, other engine management sensors or the Engine Control Unit (ECU) could be malfunctioning, which may affect engine performance and trigger the reduced engine power warning. Some owners find that the Powertrain Control Module (PCM) has reduced engine power due to unrelated system failures. Furthermore, there may be additional issues with components such as the throttle, fuel system, or emissions system that contribute to the ongoing warnings. It is advisable for affected owners to conduct a thorough diagnostic check, verify the installation of the new throttle body sensor, inspect related components, and consult a qualified mechanic or dealership for a comprehensive diagnosis and resolution of the issue.
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