Chevrolet Silverado 3500 HD reduced engine power while hauling heavy loads on Chevrolet Silverado 3500 HD

Some Chevrolet Silverado 3500 HD owners report experiencing reduced engine power when hauling heavy loads, which can be attributed to several potential issues. These may include the need to decode trouble codes to identify specific problems affecting engine performance. Owners are advised to inspect fuel system components to ensure they function correctly under heavy load conditions and to examine the throttle and sensors for any issues. Common triggers for reduced engine power mode include a faulty throttle body, MAF sensor, radiator issues, damaged wires, and a malfunctioning PCM system, with repairs or replacements of these components often necessary to resolve the issue. Additionally, the presence of the reduced engine power light or check engine light indicates that the engine is not receiving sufficient power or torque, which could stem from various factors beyond just faulty parts. For those who have recently purchased the truck, verifying that the TAC module is appropriate for the vehicle is also important, as an incorrect module can contribute to reduced engine power while hauling.