How to replace the ignition coil for Bank 1 (LP1, LY7) on Cadillac STS?

Start by turning the ignition off followed by removal of the engine cover without touching fuel hoses or pipes. To replace the Ignition Coil for cylinder 1 or 3 you must disconnect the air cleaner duct from the Throttle Body along with the positive crankcase ventilation (PCV) hose from the right bank camshaft cover but ensure that the upper Intake Manifold remains connected to the lower Intake Manifold. Start by disconnecting the Intake Manifold bolts followed by the Intake Manifold brace bolts 1 and 2 and finally the brace to free up space for Ignition Coil removal. To proceed with the Ignition Coil replacement disconnect the electrical connector(s) then remove the bolt(s) and pull out the Ignition Coil(s). Installation requires placing each Ignition Coil back into position while tightening Ignition Coil bolts to 10 n.m (89 lb in) then connecting electrical connectors to the coils. Complete the procedure with reinstallation of the Intake Manifold before returning the engine cover.

OEM Cadillac STS Ignition Coil

Ignition Coil Resistor

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5 Ignition Coils found

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Cadillac STS Ignition Coil Part Number: 89017778
$136.05 MSRP: $424.46
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Product Specifications
- Other Name: Coil, Ignition; Ignition Control Module; Ignition Module; Coil Assembly; Coil, Ignition Coil
- Replaces: 12585765
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005 Cadillac STS | Base | 8 Cyl 4.6 L GAS
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Cadillac STS Spark Plug Part Number: 19418102
$96.63 MSRP: $172.56
You Save: $75.93 (44%)
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Product Specifications
- Other Name: Coil Assembly, Ignition; Ignition Coil; Coil, Ignition Coil
- Replaces: 12583514, 12613057, 12629037
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2010 Cadillac STS | Base, Platinum | 6 Cyl 3.6 L GAS
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Cadillac STS Ignition Coil Part Number: 12632479
$56.15 MSRP: $115.40
You Save: $59.25 (52%)
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Product Specifications
- Other Name: Coil, Ignition; Direct Ignition Coil; Coil On Plug Coil; Coil, Ignition Coil
- Replaces: 12590990, 12610626, 12618542
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010-2011 Cadillac STS | Base | 6 Cyl 3.6 L GAS
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Cadillac STS Ignition Coil Part Number: 12670154
$54.66 MSRP: $101.99
You Save: $47.33 (47%)
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Product Specifications
- Other Name: Coil Assembly-Ignition; Coil, Ignition Coil
- Replaces: 12594176
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006 Cadillac STS | Base, V | 8 Cyl 4.4 L GAS, 8 Cyl 4.6 L GAS
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Cadillac STS Ignition Coil Part Number: 19421260
$84.44 MSRP: $150.78
You Save: $66.34 (44%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Coil Assembly, Ignition; Coil, Ignition Coil
- Replaces: 12597745
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2010 Cadillac STS | Base, Platinum, V | 8 Cyl 4.4 L GAS, 8 Cyl 4.6 L GAS

Cadillac STS Ignition Coil

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The Ignition Coil is one of the most important parts, which also revealed the company's dedication to efficacy. Located in the engine compartment and operating to convert battery's 12 volts into a high 15,000 to 40,000 volts of electricity, the Ignition Coil guarantees efficient ignition of the air-fuel mix inside the cylinders of the engine. This ignition coil is an important factor connecting the main and the auxiliary circuits of the ignition system making use of turn of the copper insulated torsion coil fitted round iron core for volt production. Suitable for different Cadillac STS models, the ignition coil improves reliability of the vehicle's power plant and reduces dangers of misfires, lower performance which are often caused by a faulty ignition coil. The Cadillac STS, in terms of ignition coils, has gone through various generations that are characterized by advanced ignition coil patterns such as the COPS configuration, which is more efficient than the previous ones and does not employ high tension leads. For that reason, Ignition Coil is quite noticeable in the automotive market owing to its superior engineering and sturdiness as a significant booster of the car performance. This ignition coil has great features that comply with the high performing complexions of Cadillac STS such as the Northstar V8 engine; therefore contributes much to Cadillac's luxurious and driving prowess. Finally, the Ignition Coil is crucial for the maximum performance of the car; it underlines the Cadillac's tradition of manufacturing excellent automobiles.

Cadillac STS Ignition Coil Parts and Q&A

Spark Plug
19418102
Q: How to replace the ignition coil for Bank 1 (LP1, LY7) on Cadillac STS?
A:
Start by turning the ignition off followed by removal of the engine cover without touching fuel hoses or pipes. To replace the Ignition Coil for cylinder 1 or 3 you must disconnect the air cleaner duct from the Throttle Body along with the positive crankcase ventilation (PCV) hose from the right bank camshaft cover but ensure that the upper Intake Manifold remains connected to the lower Intake Manifold. Start by disconnecting the Intake Manifold bolts followed by the Intake Manifold brace bolts 1 and 2 and finally the brace to free up space for Ignition Coil removal. To proceed with the Ignition Coil replacement disconnect the electrical connector(s) then remove the bolt(s) and pull out the Ignition Coil(s). Installation requires placing each Ignition Coil back into position while tightening Ignition Coil bolts to 10 n.m (89 lb in) then connecting electrical connectors to the coils. Complete the procedure with reinstallation of the Intake Manifold before returning the engine cover.