How to replace the throttle body assembly on Cadillac STS?

The first step for Throttle Body assembly replacement starts with removing the fuel injector sight shield and air cleaner outlet duct. Begin by disconnecting power from the Throttle Body electrical connection followed by tightening the mounting bolts to remove the Throttle Body system along with its gasket from the water housing. Discard the existing gasket because it is no longer usable. The use of carburetor cleaner is appropriate for removing deposits during setup but users must avoid cleaners which include methyl ethyl ketone because damage to components could occur. Mount the Throttle Body assembly to the water housing using new gasket while tightening mounting bolts to 10 n.m (89 lb in). First reattach the electrical connector to the Throttle Body assembly then install the air cleaner outlet duct before returning the fuel injector sight shield.

What should be done to clean the throttle body and throttle plate, and what precautions should be taken regarding mileage on Cadillac STS?

With time and mileage, deposits can accumulate on the back of throttle plate although not causing problems usually but can impact throttle valve movement when it is high. This procedure should not be carried out with cars with under 80 450 km (50,000 mi) mileage. First, strip the sight shield for the fuel injector and the air cleaner outlet duct. Check the throttle body bore and throttle body plate for deposits while ensuring that one opens the throttle plate to have a proper check. Clean throttle body bore and throttle plate with a fresh shop towel with the application of GM top engine cleaner (P/N 1052626), AC-Delco Carburetor Tune-up Conditioner (P/N X66P), or an equal product. Lastly, install the air cleaner outlet duct and the fuel injector sight shield.

OEM Cadillac STS Throttle Body

Fuel Injection Throttle Body

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Cadillac STS Throttle Body Part Number: 12615495
$209.48 MSRP: $425.46
You Save: $215.98 (51%)
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Product Specifications
- Other Name: Body, Fuel Injection Air Meter; Electronic Throttle Body Assembly; Fuel Injection Throttle Body
- Replaces: 12602800
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008-2010 Cadillac STS | Base, Platinum | 8 Cyl 4.6 L GAS
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Cadillac STS Throttle Body Part Number: 12589056
$192.62 MSRP: $542.34
You Save: $349.72 (65%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Body, Fuel Injection Air Meter; Fuel Injection Throttle Body Assembly
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2007 Cadillac STS | Base | 6 Cyl 3.6 L GAS
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Cadillac STS Throttle Body Part Number: 12694878
$213.25 MSRP: $389.36
You Save: $176.11 (46%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Body, Fuel Injection Air Meter
- Replaces: 12616994, 12609009, 12604075
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008-2011 Cadillac STS | Base | 6 Cyl 3.6 L GAS
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Cadillac STS Throttle Body Part Number: 12567376
$131.73 MSRP: $236.28
You Save: $104.55 (45%)
Product Specifications
- Other Name: Body, Fuel Injection Air Meter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2009 Cadillac STS | Base, V | 8 Cyl 4.4 L GAS, 8 Cyl 4.6 L GAS

Cadillac STS Throttle Body

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The Cadillac STS throttle body is a key parts that provides massive boost in performance and efficiency in Cadillac STS automobiles. This throttle body controls the entry of air into the engine by containing a butterfly valve that opens and closes upon accelerator signals; it controls the entry of air while the PCM coordinates the flow of fuel into the engine for efficiency. In Cadillac STS models, mechanical throttle control has developed into ETC where they work hand in hand with traction and stability features to boost performance and safety to even higher levels. The Throttle Body may also include Idle Air Control (IAC) valve which controls idle air, thus helping in the improvement of the operation of the car's engine. It is essential to ensure the Throttle Body is serviceable as wear and formation of some deposits affect the car performance, and cleaning or replacement is compulsory. A car that samples the Cadillac STS- a luxury and performance vehicle-dates back to 1988; there are different engines that include the Northstar V8. The design and engineering processes employed in the construction of the STS entail quality hence making the throttle body a significant part of Cadillac. It marked the Cadillac STS from other cars in the market by additional features like safety systems and other high-performance features. In summary, Cadillac stS throttle body is very crucial in boosting the efficiency and safety of the Cadillac stS vehicles making it a very essential and very effective component in the luxury sedan category of vehicles.

Cadillac STS Throttle Body Parts and Q&A

Throttle Body
12567376
Q: How to replace the throttle body assembly on Cadillac STS?
A:
The first step for Throttle Body assembly replacement starts with removing the fuel injector sight shield and air cleaner outlet duct. Begin by disconnecting power from the Throttle Body electrical connection followed by tightening the mounting bolts to remove the Throttle Body system along with its gasket from the water housing. Discard the existing gasket because it is no longer usable. The use of carburetor cleaner is appropriate for removing deposits during setup but users must avoid cleaners which include methyl ethyl ketone because damage to components could occur. Mount the Throttle Body assembly to the water housing using new gasket while tightening mounting bolts to 10 n.m (89 lb in). First reattach the electrical connector to the Throttle Body assembly then install the air cleaner outlet duct before returning the fuel injector sight shield.
Throttle Body
12589056
Q: What should be done to clean the throttle body and throttle plate, and what precautions should be taken regarding mileage on Cadillac STS?
A:
With time and mileage, deposits can accumulate on the back of throttle plate although not causing problems usually but can impact throttle valve movement when it is high. This procedure should not be carried out with cars with under 80 450 km (50,000 mi) mileage. First, strip the sight shield for the fuel injector and the air cleaner outlet duct. Check the throttle body bore and throttle body plate for deposits while ensuring that one opens the throttle plate to have a proper check. Clean throttle body bore and throttle plate with a fresh shop towel with the application of GM top engine cleaner (P/N 1052626), AC-Delco Carburetor Tune-up Conditioner (P/N X66P), or an equal product. Lastly, install the air cleaner outlet duct and the fuel injector sight shield.