OEM Buick Terraza Throttle Body

Buick Terraza Throttle Body Parts Questions & Experts Answers

• Throttle Body
  12609500
  Q: How to replace the throttle body assembly while handling the electronic throttle control components with care on Buick Terraza?

  A: Replace the Throttle Body assembly while handling its electronic components carefully because contact with cleaning solvents will damage them and do not use tools to hold the throttle plate open. Start by removing the intake manifold cover followed by draining the engine cooling system then removing the air cleaner outlet duct. First disconnect the engine harness electrical connector from the electronic throttle control's (ETC) components then remove both heater inlet and outlet pipe clip nuts from their positions on the Throttle Body studs. Work through the following steps: step 1: move the heater inlet and outlet hose clamps and hoses (2, 3) into proper position. Step 2: remove the Throttle Body bolts/nuts and discard the old Throttle Body Gasket. Installation must use a fresh Throttle Body Gasket before carefully aligning its locating tab with the notch at the manifold as you position the Throttle Body against the intake manifold. After tightening Throttle Body bolts/nuts to 10 n.m (89 lb in), replace the heater inlet and outlet hoses (2, 3) and clamp them. Mount the heater inlet and outlet pipe clip nuts to Throttle Body studs but apply torque of 10 n.m (89 lb in). Pressing the throttle actuator motor harness connector and seal into place is crucial to ensure they remain undamaged during engine harness electrical connector reconnection to the etc. The replacement process includes installing the air cleaner outlet duct followed by filling the engine cooling system then putting the intake manifold cover back on. A scan tool functionality inspection should be conducted to assess proper throttle operations through testing throttle ranges and accelerator pedal movement for free operation from closed throttle to wide open throttle (WOT). This process should occur when the vehicle is not engaging reduced power modes, ignition is turned on and engine is set to off.