OEM Chevrolet Trailblazer Engine Control Module

Engine Control Computer
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8 Engine Control Modules found

  • Chevy Trailblazer Engine Control Module Diagram - 12678511
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    Chevrolet Trailblazer PCM Part Number: 12678511

    $265.60 MSRP: $538.40
    You Save: $272.80 (51%)
    Ships in 1-2 Business Days
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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:
    • 2007-2009 Chevrolet Trailblazer | Base, LS, LT, SS | 6 Cyl 4.2 L GAS, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
  • Chevy Trailblazer Engine Control Module - 12726508
    Chevy Trailblazer Engine Control Module Diagram - 12726508
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    Chevrolet Trailblazer ECM Part Number: 12726508

    $191.50 MSRP: $346.62
    You Save: $155.12 (45%)
    Ships in 1-3 Business Days
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    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:
    • 2021-2022 Chevrolet Trailblazer | ACTIV, LS, LT, RS | 3 Cyl 1.3 L GAS
  • Chevy Trailblazer Engine Control Module - 12725787
    Chevy Trailblazer Engine Control Module Diagram - 12725787
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    Chevrolet Trailblazer ECM Part Number: 12725787

    $280.87 MSRP: $508.39
    You Save: $227.52 (45%)
    Ships in 1-3 Business Days
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    Product Specifications
    • Other Name: Module Assembly-Engine Control (W/O Calibration); Module, Emission Control System
    • Warranty: This genuine part is guaranteed by GM's factory warranty.
    Fits the following Vehicles:
    • 2023-2024 Chevrolet Trailblazer | ACTIV, LS, LT, RS | 3 Cyl 1.3 L GAS
  • Chevy Trailblazer Engine Control Module - 12719250
    Chevy Trailblazer Engine Control Module Diagram - 12719250
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    Chevrolet Trailblazer ECM Part Number: 12719250

    $238.13 MSRP: $447.18
    You Save: $209.05 (47%)
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    Product Specifications
    • Other Name: Module Assembly-Engine Control (W/O Calibration); Module, Emission Control System
    • Replaces: 12697426, 12680194, 12698174, 12698175, 12691559, 12711695, 12693524, 12693292, 12696017, 12703776
    • Warranty: This genuine part is guaranteed by GM's factory warranty.
    Fits the following Vehicles:
    • 2021-2024 Chevrolet Trailblazer | L, LS, LT | 3 Cyl 1.2 L GAS
  • Chevy Trailblazer Engine Control Module Diagram - 19209820
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    Product Specifications
    • Other Name: Module Assembly, Powertrain Control (Refurbished); ECM; Module, Emission Control System
    • Warranty: This genuine part is guaranteed by GM's factory warranty.
    Fits the following Vehicles:
    • 2006-2007 Chevrolet Trailblazer | LS, LT | 6 Cyl 4.2 L GAS
  • Chevy Trailblazer Engine Control Module Diagram - 12596679
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    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:
    • 2006 Chevrolet Trailblazer | LS, LT, SS | 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
  • Chevy Trailblazer Engine Control Module - 19210066
    Chevy Trailblazer Engine Control Module Diagram - 19210066
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    Product Specifications
    • Other Name: Module Assembly, Powertrain Control; Engine Control Module; ECM; Module, Emission Control System
    • Replaces: 12576463, 12571178
    • Warranty: This genuine part is guaranteed by GM's factory warranty.
    Fits the following Vehicles:
    • 2002 Chevrolet Trailblazer | LS, LT, LTZ, North Face | 6 Cyl 4.2 L GAS
  • Chevy Trailblazer Engine Control Module - 19210065
    Chevy Trailblazer Engine Control Module Diagram - 19210065
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    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:
    • 2003-2008 Chevrolet Trailblazer | Base, LS, LT, LTZ, North Face, SS | 6 Cyl 4.2 L GAS, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS

Chevrolet Trailblazer Engine Control Module

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Chevrolet Trailblazer is equipped with the Engine Control Module (ECM) that is an electronic control unit of the car that controls the engine. There is a data acquisition system which operates from different sensors like the oxygen sensor, throttle position sensor so as to control the air to fuel mixture and the ignition time. This makes for smooth running of the engine and can in fact accommodate changes in the car's performance through installed programmable functions. Year on year, new and remanufactured forms of ECMs have been incorporated into the Trailblazer. The new ECMs are developed from new parts, while the refurnished units are old models that are refurbished to operate in a similar manner. Fitment is essential because the Engine Control Module is generally made with a particular vehicle model in mind, although some come with 'universal' fits which may need cutting. All in all, they are very important components that make the Trailblazer's engine more efficient and responsive.

Chevrolet Trailblazer Engine Control Module Parts and Q&A

  • Q: How to replace the Engine Control Module on Chevrolet Trailblazer?
    A:
    The percentage of engine oil life must be retrieved through a scan tool before powertrain control module (PCM) replacement. Remove the pcm harness connectors from the pcm only after turning off the ignition to protect internal components and easing the pcm harness connector bolts. The pcm removal process starts with removing its retaining bolts and nuts before gently moving the pcm away from the Intake Manifold over the mounting studs to take it out of the vehicle. Mounting studs need replacement then you must install them to the Intake Manifold and tighten them at 6 n.m (53 lb in). The mounting studs accept the pcm and you should fasten it using retaining bolts and nuts which require a torque of 8 n.m (71 lb in). Secure the pcm harness connectors to their body while tightening retaining bolts to 8 n.m (71 lb in). The last step involves programming the new pcm because failure to set the existing oil life will cause an automatic 100 percent reset requiring an oil change within 5000 km (3,000 mi) since the previous change.
  • Q: What are the key considerations for programming an Engine Control Module with the Service Programming System (SPS) on Chevrolet Trailblazer?
    A:
    Service programming system (SPS) lets technicians access control module programming through the data link connector (DLC) while using the same serial data system which enables dtc retrieval and data display. The control module features eeprom for storing learned data including vin and axle position memorization and crankshaft variations while using flash read only memory for extensive programming purposes by overwriting contents with fresh information during the steps. The programming methods for control modules include remote programming through the tech 2 (Tech 2), pass thru programming with the tech 2 (Tech 2), and off-board remote programming through off-board programming adapter (OBPA) and also off-board pass thru programming with the tech 2 (OBPA). Begin programming only after checking that the control module uses different software/calibration and when vehicle power voltage ranges from 12 to 16 volts and the charging system functions correctly and all tool connections such as the rs-232 cable and the dlc connection remain secure. All battery-draining systems like daytime running lights (DRL) and hvac need to be disabled before starting the procedure and maintaining the ignition switch at its proper position. Programming the powertrain can cause its operation to change following completion which forces the control module to reconnect values including fuel trim correction along with idle air control position. The replacement of a control module demands various follow-up service procedures which include crankshaft variation learning and engine oil lifetime reset as well as idle learning and complete system programming and vehicle theft deterrent password re-setting and Throttle Position Sensor learning.

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