How to replace the Engine Control Module (ECM) on GMC Sierra 1500?

The first step when replacing an Engine Control Module should be turning off ignition to protect the module from internal damage during connector installation or removal and power disconnection procedures. The metal control module frame should not receive battery voltage to protect its operation and touching connector pins or solder connections is unsafe because it generates electrostatic discharge. Check the connector surfaces for debris before checking if the gaskets are correctly installed to stop contaminant penetration. A scan tool should be used to record the remaining engine oil life data because lack of programming will cause the new module to default to 100% leading to an oil change at 5,000 km (3,000 mi) based on the last change. Proceed with disabling the negative Battery Cable and releasing the ecm electrical connector retainers before pulling out the connectors from the ecm position. The installation requires removal of the ecm after detaching its retainer tabs which secure the ecm against the bracket. The installation process of this unit requires users to first insert the bottom ecm tabs into the bracket before pushing the ecm unit to lock it in place with retainer clips applied to both the upper and lower electrical connectors. Ending the procedure requires reattaching the negative Battery Cable and performing an ecm programming step for any newly installed unit.

What does the service of the Engine Control Module (ECM) involve on GMC Sierra 1500?

The service procedure for the pcm control involves replacing the component or executing eeprom operations. When it becomes necessary to replace the pcm always select the appropriate part before uninstalling the faulty module to install a new service pcm. Internal pcm damage will happen when turning off the ignition switch before connecting or disconnecting power to the pcm and clear all debris from the pcm connector surfaces. Maintaining proper connection of pcm module connector gaskets will help stop contaminants from entering the system. Use a scan tool to obtain the engine oil life percentage before removal because a failure to program the new module with this data through default mode will activate a 100% oil life condition which triggers a required oil change at 5000 km (3,000 mi) from the last change. Before work begins disconnect the negative Battery Cable except when using rpo nys which requires removal of the harness ground clip while rpo hp2 demands the removal of the hybrid control module (HCM). Vehicles without rpo hp2 need to start with unhooking the pcm cover mounting tabs before separating the cover from its bracket while removing the cover. Users should perform the identical cover removal steps for vehicles that have rpo hp2 specification. The process starts by removing the pcm electrical connector bolts when the ignition is off to avoid damage followed by disconnecting pcm electrical connectors and releasing the spring latch before extracting the pcm through the mounting tabs. Safely mount the new pcm through its tabs before locking the spring mechanism while connecting electrical cables by tightening the bolts to 8 n.m (71 lb in). Install the pcm cover after which installing the hcm if the vehicle includes rpo hp2. The negative Battery Cable needs to be reconnected after which pcm programming should be performed in case of new unit installation.

OEM GMC Sierra 1500 Engine Control Module

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26 Engine Control Modules found

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GMC Sierra 1500 ECM Part Number: 12625455
$232.61 MSRP: $424.70
You Save: $192.09 (46%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Module, Engine Control (W/2ND Mpu); Engine Control Module; Module, Emission Control System
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2009-2010 GMC Sierra 1500 | Denali, Hybrid, SL, SLE, SLT, WT | 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L FLEX
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GMC Sierra 1500 ECM Part Number: 12703872
$204.82 MSRP: $414.92
You Save: $210.10 (51%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Module Assembly-Engine Control (W/2ND Mpu); Engine Control Module; Module, Emission Control System
- Replaces: 12686430, 12692070
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019 GMC Sierra 1500 | AT4, Base, Denali, Elevation, SLE, SLT | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.2 L GAS
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GMC Sierra 1500 PCM Part Number: 19210738
$243.78 MSRP: $456.42
You Save: $212.64 (47%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Module Assembly, Powertrain Control; Engine Control Module; ECM; Module, Emission Control System
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007 GMC Sierra 1500 | Denali, SL, SLE, SLT, WT | 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L GAS
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GMC Sierra 1500 PCM Part Number: 12633238
$245.01 MSRP: $496.56
You Save: $251.55 (51%)
Ships in 1-2 Business Days
ADD TO CART
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:
- 2010-2013 GMC Sierra 1500 | Denali, Hybrid, SL, SLE, SLT, WT, XFE | 8 Cyl 4.8 L FLEX, 8 Cyl 5.3 L FLEX, 8 Cyl 6.0 L FULL HYBRID EV-FLEX (FHEV), 8 Cyl 6.2 L FLEX
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GMC Sierra 1500 ECM Part Number: 12692068
$279.58 MSRP: $566.80
You Save: $287.22 (51%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Module Assembly-Engine Control (W/2ND Mpu) E92 Service ECM, 5 Byt; Engine Control Module
- Replaced by: 12704476
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2017-2018 GMC Sierra 1500 | Base, Denali, SLE, SLT | 6 Cyl 4.3 L FLEX, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 5.3 L MILD HYBRID EV-GAS (MHEV), 8 Cyl 6.2 L GAS
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GMC Sierra 1500 ECM Part Number: 12692067
$278.29 MSRP: $564.16
You Save: $285.87 (51%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Module Assembly-Engine Control (W/2ND Mpu) E92 Service ECM 2-Byte; Engine Control Module
- Replaced by: 12704477
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2014-2016 GMC Sierra 1500 | Base, Denali, SLE, SLT | 6 Cyl 4.3 L FLEX, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 5.3 L MILD HYBRID EV-GAS (MHEV), 8 Cyl 6.2 L GAS
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GMC Sierra 1500 ECM Part Number: 12635043
$213.69 MSRP: $434.02
You Save: $220.33 (51%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Module, Emission Control System; Engine Control Module
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010-2013 GMC Sierra 1500 | WT | 6 Cyl 4.3 L GAS
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GMC Sierra 1500 Knock Sensor Part Number: 12612397
$316.33 MSRP: $642.48
You Save: $326.15 (51%)
ADD TO CART
Product Specifications
- Other Name: Module Assembly, Engine Control (W/2ND Mpu); Engine Control Module; ECM; Module, Emission Control System
- Replaces: 12597125
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2009 GMC Sierra 1500 | WT | 6 Cyl 4.3 L GAS
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GMC Sierra 1500 ECM Part Number: 12733908
$211.34 MSRP: $396.89
You Save: $185.55 (47%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Module Assembly-Engine Control (W/O Calibration); Module, Emission Control System
- Replaces: 12724450
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2023 GMC Sierra 1500 | AT4, Denali, Denali Ultimate, Elevation, SLE, SLT | 6 Cyl 3.0 L DIESEL
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GMC Sierra 1500 ECM Part Number: 12719704
$206.01 MSRP: $386.88
You Save: $180.87 (47%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Module Assembly-Engine Control (W/O Calibration); Module, Emission Control System
- Replaces: 12711353
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2022-2023 GMC Sierra 1500 | AT4, AT4X, Denali, Denali Ultimate, Elevation, Pro, SLE, SLT | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.2 L GAS
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GMC Sierra 1500 ECM Part Number: 12726508
$191.50 MSRP: $346.62
You Save: $155.12 (45%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Module, Emission Control System
- Replaces: 12697793, 12689093
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019-2022 GMC Sierra 1500 | Base, Elevation, Pro, SLE | 4 Cyl 2.7 L GAS
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GMC Sierra 1500 ECM Part Number: 12725415
$280.17 MSRP: $526.15
You Save: $245.98 (47%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Module Assembly-Engine Control (W/O Calibration); Module, Emission Control System
- Replaces: 12718010
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2023 GMC Sierra 1500 | Elevation, Pro, SLE | 4 Cyl 2.7 L GAS
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GMC Sierra 1500 ECM Part Number: 12724217
$292.19 MSRP: $548.72
You Save: $256.53 (47%)
ADD TO CART
Product Specifications
- Other Name: Module Assembly-Engine Control (W/O Calibration); Module, Emission Control System
- Replaces: 24001263, 24000211, 24001862
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2020-2022 GMC Sierra 1500 | AT4, AT4X, Denali, Denali Ultimate, Elevation, SLE, SLT | 6 Cyl 3.0 L DIESEL
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GMC Sierra 1500 ECM Part Number: 12624927
$388.99 MSRP: $790.08
You Save: $401.09 (51%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Module Assembly-Engine Control (W/2ND Mpu); Engine Control Module; Module, Emission Control System
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010-2013 GMC Sierra 1500 | Hybrid | 8 Cyl 6.0 L FULL HYBRID EV-FLEX (FHEV)
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GMC Sierra 1500 ECM Part Number: 12602801
$534.19 MSRP: $962.30
You Save: $428.11 (45%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Module, Powertrain Control (P59)
- Replaced by: 89017749
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2007 GMC Sierra 1500 | Base, SL, WT | 6 Cyl 4.3 L GAS
View related parts
GMC Sierra 1500 PCM Part Number: 12612384
$261.01 MSRP: $488.26
You Save: $227.25 (47%)
Ships in 1-2 Business Days
ADD TO CART
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 GMC Sierra 1500 | Denali, SL, SLE, SLT, WT | 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L GAS
View related parts
GMC Sierra 1500 ECM Part Number: 12629278
$258.14 MSRP: $463.04
You Save: $204.90 (45%)
Product Specifications
- Other Name: Module, Emission Control System; Engine Control Module
- Replaces: 12611182
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2009 GMC Sierra 1500 | Hybrid | 8 Cyl 6.0 L FULL HYBRID EV-GAS (FHEV)
View related parts
GMC Sierra 1500 Control Module Part Number: 15263889
Product Specifications
- Other Name: Module, Engine Electrical
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005 GMC Sierra 1500 | Hybrid | 8 Cyl 5.3 L FULL HYBRID EV-GAS (FHEV)
View related parts
GMC Sierra 1500 PCM Part Number: 12200411
$246.62 MSRP: $434.84
You Save: $188.22 (44%)
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:
- 2001-2002 GMC Sierra 1500 | Base, C3, Denali, HT, SL, SLE, SLT, WT | 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
View related parts
GMC Sierra 1500 PCM Part Number: 19299227
$248.43 MSRP: $441.84
You Save: $193.41 (44%)
Product Specifications
- Other Name: Module Assembly, Engine Control (Remanufacture); Engine Control Module; ECM; Module, Emission Control System
- Replaces: 89017739, 12586243
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004 GMC Sierra 1500 | Base, SLE, SLT, WT | 6 Cyl 4.3 L GAS

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1-20 of 26 Results

GMC Sierra 1500 Engine Control Module

Want to cut long-term maintenance and repair costs? Choose OEM Engine Control Module. Those parts deliver top durability you can trust. On our site, you'll find a huge catalog of genuine GMC Sierra 1500 parts. Prices are unbeatable, so you can keep more in your pocket. Every OEM GMC Sierra 1500 Engine Control Module includes a manufacturer's warranty. You can also get an easy return policy that keeps buying risk free. Fast delivery, get your car on the road quickly. It's simple to search, compare, and order. Stop guessing about quality or fit. Order today and save with parts that last.

GMC Sierra 1500 Engine Control Module Parts and Q&A

ECM
12625455
Q: How to replace the Engine Control Module (ECM) on GMC Sierra 1500?
A:
The first step when replacing an Engine Control Module should be turning off ignition to protect the module from internal damage during connector installation or removal and power disconnection procedures. The metal control module frame should not receive battery voltage to protect its operation and touching connector pins or solder connections is unsafe because it generates electrostatic discharge. Check the connector surfaces for debris before checking if the gaskets are correctly installed to stop contaminant penetration. A scan tool should be used to record the remaining engine oil life data because lack of programming will cause the new module to default to 100% leading to an oil change at 5,000 km (3,000 mi) based on the last change. Proceed with disabling the negative Battery Cable and releasing the ecm electrical connector retainers before pulling out the connectors from the ecm position. The installation requires removal of the ecm after detaching its retainer tabs which secure the ecm against the bracket. The installation process of this unit requires users to first insert the bottom ecm tabs into the bracket before pushing the ecm unit to lock it in place with retainer clips applied to both the upper and lower electrical connectors. Ending the procedure requires reattaching the negative Battery Cable and performing an ecm programming step for any newly installed unit.
ECM
12602801
Q: What does the service of the Engine Control Module (ECM) involve on GMC Sierra 1500?
A:
The service procedure for the pcm control involves replacing the component or executing eeprom operations. When it becomes necessary to replace the pcm always select the appropriate part before uninstalling the faulty module to install a new service pcm. Internal pcm damage will happen when turning off the ignition switch before connecting or disconnecting power to the pcm and clear all debris from the pcm connector surfaces. Maintaining proper connection of pcm module connector gaskets will help stop contaminants from entering the system. Use a scan tool to obtain the engine oil life percentage before removal because a failure to program the new module with this data through default mode will activate a 100% oil life condition which triggers a required oil change at 5000 km (3,000 mi) from the last change. Before work begins disconnect the negative Battery Cable except when using rpo nys which requires removal of the harness ground clip while rpo hp2 demands the removal of the hybrid control module (HCM). Vehicles without rpo hp2 need to start with unhooking the pcm cover mounting tabs before separating the cover from its bracket while removing the cover. Users should perform the identical cover removal steps for vehicles that have rpo hp2 specification. The process starts by removing the pcm electrical connector bolts when the ignition is off to avoid damage followed by disconnecting pcm electrical connectors and releasing the spring latch before extracting the pcm through the mounting tabs. Safely mount the new pcm through its tabs before locking the spring mechanism while connecting electrical cables by tightening the bolts to 8 n.m (71 lb in). Install the pcm cover after which installing the hcm if the vehicle includes rpo hp2. The negative Battery Cable needs to be reconnected after which pcm programming should be performed in case of new unit installation.