| GM Genuine parts may ship in a GM Genuine or AcDelco box. The product will fit and function the same. |
| GM GENUINE 2171617 Specifications |
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| Inlet Type | Round | | Idle Air Control Motor Included | Yes | | Fuel Injectors Included | No | | Bore Diameter | 3.543 (IN) | | Fuel System Injection Type | Sequential Fuel Injection | | Throttle Body Material | Cast Aluminum | | Throttle Body Finish | Natural | | Fuel System Grade | OEM Standard | | Gasket or Seal Included | No | | Outlet Type | Round | | Throttle Body Spacer Included | No | | Fuel System Type | Gasoline Fuel Injection | | Venturi Quantity | 1 | | Throttle Position Sensor Included | Yes | | Inlet Diameter | 3.825 (IN) | | Outlet Diameter | 3.584 (IN) |
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The GM Genuine Fuel Injection Throttle Body is a GM-recommended replacement for your vehicle's original component. It is located on the intake manifold, and contains the throttle plate(s) that control the air entering the engine. The throttle body also houses the fuel injector(s) on Throttle Body Injection (TBI) or Central Fuel Injection (CFI) systems. This original equipment fuel injection throttle body has been manufactured to fit your specific GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
Features & Benefits:- GM-recommended replacement part for your GM vehicle's original factory component
- Offering the quality, reliability, and durability of GM OE
- Manufactured to GM OE specification for fit, form, and function
Experiencing Acceleration or Idling Issues? It Might Not be the Throttle Body!
Poor acceleration, hesitation and other idling issues can be caused by failure of a variety of parts. Use the chart below to help determine which part is causing the problem.
| Part | System | Other Symptoms |
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| Throttle Body | Fuel & Air | |
| Mass Air Flow Sensor | Exhaust & Emission | - Difficulty Starting or Turning Engine
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| Air Filter | Fuel & Air | - Dark Filter Media
- Debris in Filter or Filter Box (Change every year!)
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| Fuel Injector | Fuel & Air | |
| Vacuum Hose / Connector | Hoses / Lines & Clamps | - Hissing, Squealing or Sucking Sound from Cracked Connector or Hose (Use a Vacuum Tester)
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Spark Plug or Spark Plug Wire or Ignition Coil
| Ignition | - Increase in Exhaust Emissions
- Visible Wire Damage
- Oil Leak
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| Accelerator Pedal Position Sensor | Interior | - Limp Mode
- No / Delayed Pedal Response
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 Installation Tips - Perform OEM Recommended idle relearn procedure. Some applications may require the use of an OBD Scan Tool while others may refer to the Owners Manual.
- A relearn of idle values can be forced by disconnecting the negative battery cable for several minutes in order to clear the electronic control module's memory.
- Several minutes of idling and highway driving may be necessary to relearn idle values. Electrical loads such as headlights, AC, radio, etc. should be turned off while relearning.
- Erratic idle or engine surging after installation of replacement unit may be resolved by putting a load on the engine. If idle evens out after shifting into gear, shift back into park and check idle RPM - perform relearn again if a drivability condition is present.
- Clean intake manifold mounting surface and replace Intake Manifold Gasket, if necessary.
- Inspect Air Cleaner Intake Hose for cracks and proper sealing - replace or repair with Multi-Purpose Sealant, if necessary.
- Check harness for broken wires and wiggle connector to try and reproduce the problem. Replace or clean Connector, if necessary.
- Clear all diagnostic trouble codes from vehicle computer prior to idle relearn.
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| OEM / Interchange Numbers: 12570790 |
Warranty Information:24 Month / Unlimited Mile Warranty |
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