Hummer car, truck, or SUV enthusiasts have grown accustomed to a certain level of off-road capability when driving their H3 around town. Obviously, you bought your H3 because you knew that you wanted flexibility and adventurous drive both rolled up into one vehicle. While it's not hard to buy replacement parts for Hummer vehicles, these days only the highest quality are required to repair your automobile. You purchased your H3 because its military grade design and reliable GM engines appealed to your senses; so why would you settle for second rate when it comes to great quality auto parts?
Constant communication between the ECU and throttle position sensor is required to maintain an ideal balance between fuel efficiency and power output. On your Hummer H3, the throttle position sensor reads how far open the butterfly plates are inside the throttle body and reports this to the ECU. At wide open throttle it may downshift and flood the fuel injectors for more power, or reduce fuel consumption when you let off the accelerator. Either way, the Hummer H3 throttle position sensor is absolutely critical to your engine performance.
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