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
$229.42 MSRP: $424.46
You Save: $195.04 (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
$91.46 MSRP: $187.96
You Save: $96.50 (52%)
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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
$56.47 MSRP: $116.04
You Save: $59.57 (52%)
Ships in 1-2 Business Days
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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
$54.32 MSRP: $101.99
You Save: $47.67 (47%)
Ships in 1-2 Business Days
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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
$82.78 MSRP: $147.82
You Save: $65.04 (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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Cadillac STS Ignition Coil Parts Questions & Experts Answers

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.