OEM 2004 GMC Sierra 1500 Throttle Body

2004 GMC Sierra 1500 Throttle Body Parts and Q&A

• Q: What should be done to clean the throttle body and throttle plate for those with over 80,450 km (50,000 mi) of mileage on 2004 GMC Sierra 1500?

  A: The throttle plate needs cleaning after 80450 km (50,000 mi) of use when deposits start building up on its back surface as this can affect pedal response and throttle valve movement. Start by disconnecting the air cleaner intake duct while ensuring ignition remains off to protect against accidental throttle blade movement resulting in injury. Using a tool open the throttle plate to examine the internal surfaces of both the throttle plate and bore as well as any deposits present. You should refrain from using cleaning products that contain Methyl Ethyl Ketone (MEK) because they may harm your vehicle's fuel system components. Spray GM Top Engine Cleaner (P/N 1052626) or the equivalent product AC-Delco Carburetor Tune-Up Conditioner (P/N X66-P) onto a clean shop towel to clean throttle body bore and plate surfaces. Reinstall the air cleaner intake duct as your final step.