OEM Chevrolet Suburban 2500 Throttle Body

Chevrolet Suburban 2500 Throttle Body Parts and Q&A

• Throttle Body
  17113659
  Q: How to clean the throttle body properly on Chevrolet Suburban 2500?

  A:

  First, remove the air cleaner outlet duct as well as the air inlet screen if it is present, when cleaning the throttle body. Inspect the throttle body bore and throttle valve plate for deposits while ensuring the throttle valve is opened for a full inspection. Do not use immersion cleaners or solvents which are too strong for throttle body assemblies with sealed throttle shaft bearings, for fear of causing damage to the electric parts, sensors and seals or O-rings; they can also wash the grease from non-serviceable throttle shaft bearings. Do not use a wire brush or scraper to avoid damaging components and also use cleaners not containing MEK to prevent harm to components. Clean the throttle body bore and throttle valve plate using a clean shop towel with the GM Top Engine Cleaner, P/N 1052626 (Cdn P/N 993026) or an equivalent product. If the amounts of deposits are large, then disassemble the throttle body and clean it using a parts cleaning brush without submerging it in any cleaning solvent. Reassemble and install the throttle body; install the air inlet screen if applicable, then install the air cleaner outlet duct.
• Throttle Body
  19420713
  Q: How to replace the throttle body assembly and handle the electronic throttle control components on Chevrolet Suburban 2500?

  A:

  To change the Throttle Body assembly, handle the electronic throttle control components with care not to damage, avoid dropping it or slap them around, do not immerse it in any cleaning solvents. The electronic throttle control (ETC) means throttle position (TP) sensor is not serviceable individually; there is the need to service both components as one assembly unit. Start by identifying the 8 digit part identification stamp on the Throttle Body casting for future reference in the event of replacement. Remove the air induction assembly and make sure that in doing so, any openings are covered or plugged to prevent contamination. Pull off the throttle actuator motor harness connector and the tp sensor harness connector, and the Throttle Body attaching nuts after cautioning against reusing the Throttle Body Gasket, which should also be discarded. Replace a new Throttle Body Gasket and the Throttle Body assembly, wherein the Throttle Body nuts would be tightened using a torque wrench to a point of 10 n.m (89 lb in). Make sure the electrical connector to the Throttle Body motor and the connector seal are in good condition. Reconnect the tp sensor harness connector, and the throttle actuator motor harness; reconnect and reinstall the air induction assembly. With the vehicle not in reduced engine power, turn the ignition with the engine off to check the throttle complete positions for open and closure by the use of a scan tool which will check the throttle angles as you operate the accelerator pedal to ensure that it is operating free of binding in between closed throttle to full open throttle (WOT). Finally, start the engine.