Firebird V8-350 5.7L VIN P SFI (1996)
Throttle Body: Service and Repair
Throttle Body Assembly Removal and Replacement
REMOVE OR DISCONNECT
NOTE: An eight-digit part identification number (3) is stamped on the throttle body casting. Refer to this number if servicing, or part replacement
is required. A build date is stamped on the throttle body which indicates the day of year (1) and the year (2) that the throttle body was
manufactured.
1. Disconnect the negative battery cable.
2. Partially drain the cooling system.
3. Disconnect the electrical connector from the IAT sensor.
4. Disconnect the distributor ventilation vacuum line from the air intake duct.
5. Remove the air intake duct.
6. Disconnect the electrical connectors from the TP sensor and the IAC valve.
7. Disconnect the electrical harness from the accelerator cable shield.
8. Remove the accelerator cable shield.
9. Disconnect the accelerator control cable and the cruise control cable from the throttle body.
10. Disconnect the vacuum lines from the throttle body.
11. Disconnect the coolant hoses from the throttle body.
12. Remove the throttle body attaching bolts.
13. Remove the throttle body and the gasket. Discard the gasket.
NOTE: Use care in cleaning the old gasket material from the machined aluminum surfaces as sharp tools may damage the sealing surfaces.
CAUTION: Do Not soak the throttle body in cold immersion type cleaner. The throttle valves have a factory applied sealing compound (DAG
material is applied to the outside edge of each valve and the throttle bore) to prevent air bypass at closed throttle. Strong solvents or brushing will
remove the material. To clean the throttle body following disassembly, use a spray type cleaner such as GM X-66A or GM 1052626. Use a shop
towel to remove heavy deposits.
The TP sensor and the IAC valve are electrical components and should NOT come in contact with solvent or cleaner, as damage may result.
14. Clean the gasket sealing surfaces.
INSTALL OR CONNECT
1. Install the throttle body with a new gasket.
2. Install the throttle body attaching bolts.
