Throttle Body Assembly Replacement for Pontiac Grand Am 2003

Notice: Do not use solvent of any type when cleaning the gasket surfaces on the intake manifold and the throttle body assembly, as damage to the gasket surfaces and throttle body assembly may result.

Notice: Do not use any solvent that contains Methyl Ethyl Ketone (MEK). This solvent may damage fuel system components.

1. Remove the air cleaner resonator. Refer to Air Cleaner Outlet Resonator Replacement .
2. Disconnect the idle air control (IAC) valve harness connector .
3. Disconnect the throttle position (TP) sensor harness connector .
4. Disconnect the vacuum hoses at the throttle body.
5. Remove the accelerator control bracket and cables from the throttle body. Refer to Accelerator Control Cable Bracket Replacement .
6. Remove the throttle body attaching bolts and studs (1).
7. Remove the throttle body (4) from the intake manifold.

1. Inspect the throttle body gasket (3) and replace if necessary.
2. Install the throttle body (4) to the intake manifold.

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.

3. Install the throttle body attaching bolts and studs (5).

Tighten
Tighten the throttle body attaching bolts and studs to 10 N·m (89 lb in).

4. Install the accelerator cable bracket and cables. Refer to Accelerator Control Cable Bracket Replacement .
5. Connect the vacuum hoses to the throttle body.
6. Connect the TP sensor harness connector .
7. Connect the IAC valve harness connector .
8. Install the air cleaner resonator. Refer to Air Cleaner Outlet Resonator Replacement .
9. Test the accelerator movement by depressing the pedal to the floor and releasing the pedal.