How to replace the Engine Control Module (ECM) on Cadillac STS?

The replacement process for the Engine Control Module (ECM) requires users to disable ignition power because handling pcm connectors and power connections could lead to internal ecm damage. Use a scan tool to gather the engine oil and automatic transmission fluid percent lifespan information because not setting replacement values on the new module will reset them to 100 percent so that it triggers an oil change at 5,000 km (3,000 mi) and automatic transmission fluid change at 83,000 km (50,000 mi) from previous changes. The battery negative cable needs to be disconnected followed by suspension and support of the vehicle before removing the front air deflector . Follow this process to detach the ecm electrical connectors then remove its mounting nuts before taking out the ecm. The new ecm installation requires users to place the module into the vehicle before tightening the mounting nuts to 8 n.m (71 lb in) while reattaching ecm electrical connectors before reinstalling the front air deflector. Lower the vehicle while reconnecting the battery negative cable before performing required ecm programming.

OEM Cadillac STS Engine Control Module

Engine Control Computer

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Cadillac STS PCM
Part Number: 12678511
$191.75 MSRP: $538.40
You Save: $346.65 (65%)
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Product Specifications
- Other Name: Module Assembly-Engine Control (W/2ND Mpu); Engine Control Module; ECM; Module, Emission Control System
- Replaces: 12636660, 12607096
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2010 Cadillac STS | Base, Platinum, V | 8 Cyl 4.4 L GAS, 8 Cyl 4.6 L GAS
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Cadillac STS PCM
Part Number: 19300014
$1096.74 MSRP: $1737.11
You Save: $640.37 (37%)
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Product Specifications
- Other Name: Module, Emission Control System; Engine Control Module; ECM
- Replaces: 19300015
- 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 PCM
Part Number: 19300016
Product Specifications
- Other Name: Module, Emission Control System; Engine Control Module; ECM
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008-2009 Cadillac STS | Base, Platinum | 6 Cyl 3.6 L GAS
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Cadillac STS PCM
Part Number: 12576523
Product Specifications
- Other Name: Module, Engine Control; Engine Control Module; ECM; Module, Emission Control System
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2007 Cadillac STS | Base | 8 Cyl 4.6 L GAS
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Cadillac STS ECM
Part Number: 12600940
$299.25 MSRP: $536.78
You Save: $237.53 (45%)
Product Specifications
- Other Name: Module, Engine Control; Engine Control Module
- 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

Cadillac STS Engine Control Module

Our website offers an extensive catalog of genuine Cadillac STS Engine Control Module at unbeatable prices. Every OEM Cadillac STS Engine Control Module comes with a manufacturer's warranty, an easy return policy, and rapid delivery service. Don't miss out on this great opportunity!

Cadillac STS Engine Control Module Parts Questions & Experts Answers

ECM
12600940
Q: How to replace the Engine Control Module (ECM) on Cadillac STS?
A: The replacement process for the Engine Control Module (ECM) requires users to disable ignition power because handling pcm connectors and power connections could lead to internal ecm damage. Use a scan tool to gather the engine oil and automatic transmission fluid percent lifespan information because not setting replacement values on the new module will reset them to 100 percent so that it triggers an oil change at 5,000 km (3,000 mi) and automatic transmission fluid change at 83,000 km (50,000 mi) from previous changes. The battery negative cable needs to be disconnected followed by suspension and support of the vehicle before removing the front air deflector . Follow this process to detach the ecm electrical connectors then remove its mounting nuts before taking out the ecm. The new ecm installation requires users to place the module into the vehicle before tightening the mounting nuts to 8 n.m (71 lb in) while reattaching ecm electrical connectors before reinstalling the front air deflector. Lower the vehicle while reconnecting the battery negative cable before performing required ecm programming.