Throttle Body Spacer Replacement Domestic

1. Remove the rear seat cushion. Refer to Rear Seat Cushion Replacement in Seats.

Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

2. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
3. Disconnect the IAT sensor connector (1) from the IAT sensor.
4. Remove the Mass Air Flow (MAF) sensor (2). Refer to Mass Airflow Sensor Replacement .



5. Disconnect the transaxle vent hose (4) from the clip (3).



6. Remove the throttle body. Refer to Throttle Body Assembly Replacement .
7. Remove the throttle body spacer bolts from the throttle body spacer (3).



8. Disconnect the EGR pipe at throttle body spacer.



9. Disconnect the crankcase ventilation pipe at the throttle body spacer.
10. Remove the throttle body spacer (3) and gasket (2) from the intake manifold (4).
11. Clean the throttle body gasket surfaces.
12. Clean the throttle body spacer gasket surfaces.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.




1. Install the throttle body spacer (3)

Tighten
Tighten the throttle body spacer attaching bolts to 12 N·m (106 lb in).




2. Connect the EGR pipe to the throttle body spacer.

Tighten
Tighten the EGR pipe bolt to 28 N·m (21 lb ft).

3. Connect the crankcase ventilation pipe at the throttle body spacer.



4. Install the new gasket (2) and throttle body (1). Refer to Throttle Body Assembly Replacement .

Tighten
Tighten the throttle body attaching bolts to 12 N·m  (106 lb in).




5. Connect the transaxle vent hose (4) to clip (3).



6. Reinstall the MAF sensor and intake air duct as an assembly. Refer to Mass Airflow Sensor Replacement and Air Cleaner Inlet Duct Replacement .
7. Connect the IAT sensor connector (1) from the IAT sensor.
8. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
9. Install the rear seat cushion. Refer to Rear Seat Cushion Replacement in Seats.
10. Check and add coolant as necessary. Long life coolant must meet GM Specification 6277-M. Refer to Fluid and Lubricant Recommendations in Maintenance and Lubrication.