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The trouble code P1175 for "Fuel Trim Cylinder Balance Bank 2" is relevant to the Chevrolet Silverado. To diagnose this issue, check the fuel injectors, oxygen sensors, ignition system, and overall engine condition. Often, clogged fuel injectors are the main culprit. Attempt using octane boosters or fuel additives to clean them and monitor if the code reappears. If fuel system checks out, test resistance and voltage of the O2 sensors in the Silverado's exhaust system.
Getting this code on your Chevy Silverado means that the fuel trim cylinder balance diagnostic has identified a lean cylinder-to-cylinder air/fuel ratio imbalance in both banks.