What are the steps involved in servicing the Engine Control Module (ECM) on Chevrolet Blazer?

Decisions regarding powertrain control module (PCM) service include replacing the pcm itself or executing electrically erasable programmable read-only memory (EEPROM) programming. Inspection of the pcm should occur before replacement to verify that a correct part is chosen. The operation of disconnecting power and removing or installing pcm connectors must be performed only when the ignition is off to protect the pcm's internal components. Surface inspection of pcm connectors must be followed by cleaning all debris while double-checking the presence of appropriate pcm module connector gaskets which act to stop contamination. First disconnect the negative Battery Cable before relocating the pcm retention bar along with its retainer to free the pcm from its mounting bracket and then disconnect the electrical connectors. Begin the installation by checking the service number on the replacement pcm matches the defective unit in order to proceed with replacement. Complete the electrical connector attachment by securing screws to 8 n.m (71 lb in) before placing the pcm retainer into bracket slots. After pulling out the retention bar install the negative Battery Cable. Programming the pcm should be performed at the end of the installation.

OEM Chevrolet Blazer Engine Control Module

Engine Control Computer

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19 Engine Control Modules found

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Chevrolet Blazer Control Module Part Number: 88999179
$257.71 MSRP: $473.30
You Save: $215.59 (46%)
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Product Specifications
- Other Name: Module, Engine Control; Engine Control Module; Computer; ECM; Module, Emission Control System (Components, EGR Control, Eprom)
- Replaces: 16147060
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-1994 Chevrolet Blazer | Base, Cheyenne, Silverado, Silverado Sport | 8 Cyl 5.7 L GAS, 8 Cyl 6.5 L DIESEL
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Chevrolet Blazer ECM Part Number: 12602801
$534.19 MSRP: $962.30
You Save: $428.11 (45%)
Ships in 1-2 Business Days
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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 Chevrolet Blazer | Base, Xtreme, ZR2 | 6 Cyl 4.3 L GAS
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Chevrolet Blazer Control Module Part Number: 9366810
$258.43 MSRP: $470.38
You Save: $211.95 (46%)
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Product Specifications
- Other Name: Module, Vehicle Control; Engine Control Module; PCM; ECM; Module, Emission Control System
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1998-1999 Chevrolet Blazer | Base, LS, LT, Trailblazer | 6 Cyl 4.3 L GAS
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Chevrolet Blazer ECM Part Number: 12700116
$173.70 MSRP: $352.81
You Save: $179.11 (51%)
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Product Specifications
- Other Name: Module Assembly-Engine Control (W/2ND Mpu) E80 Service No Start.; Engine Control Module; Module, Emission Control System
- Replaces: 12669908, 12687467
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019-2021 Chevrolet Blazer | Base, L, LT | 4 Cyl 2.5 L GAS
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Chevrolet Blazer Control Module Part Number: 88999146
$136.60 MSRP: $273.60
You Save: $137.00 (51%)
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Product Specifications
- Other Name: Module Assembly, Engine Control (Remanufacture); Engine Control Module; ECM; Emission Control System (Air Injector Reactor Valves, ECM Components, EGR Valves)
- Replaces: 01227747, 1227747
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1987-1991 Chevrolet Blazer | Custom Deluxe, Scottsdale, Silverado | 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL
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Chevrolet Blazer ECM Part Number: 88961143
$152.54 MSRP: $271.80
You Save: $119.26 (44%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Module Assembly, Powertrain Control (Remanufacture); Engine Control Module; Module, Emission Control System(EGR Control); Module, Emission Control System
- Replaces: 16196396
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-1994 Chevrolet Blazer | Base, Cheyenne, Silverado, Silverado Sport | 8 Cyl 5.7 L GAS, 8 Cyl 6.5 L DIESEL
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Chevrolet Blazer PCM Part Number: 19299227
$240.92 MSRP: $441.84
You Save: $200.92 (46%)
Ships in 1-2 Business Days
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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 Chevrolet Blazer | LS, Xtreme, ZR2 | 6 Cyl 4.3 L GAS
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Chevrolet Blazer PCM Part Number: 12200411
$239.24 MSRP: $434.84
You Save: $195.60 (45%)
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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:
- 2001-2002 Chevrolet Blazer | LS, LT, Trailblazer, Xtreme | 6 Cyl 4.3 L GAS
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Chevrolet Blazer ECM Part Number: 12726508
$193.23 MSRP: $346.62
You Save: $153.39 (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:
- 2020-2022 Chevrolet Blazer | LT, Premier | 4 Cyl 2.0 L GAS
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Chevrolet Blazer ECM Part Number: 12725787
$283.41 MSRP: $508.39
You Save: $224.98 (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 Blazer | LT, Premier, RS | 4 Cyl 2.0 L GAS
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Chevrolet Blazer ECM Part Number: 12725663
$234.37 MSRP: $476.02
You Save: $241.65 (51%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Module Assembly-Engine Control (W/2ND Mpu); Module, Emission Control System
- Replaces: 12683348, 12679078, 12659039, 12708794, 12698026, 12687296
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019-2024 Chevrolet Blazer | Base, LT, Premier, RS | 6 Cyl 3.6 L GAS
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Chevrolet Blazer Control Module Part Number: 16229684
Product Specifications
- Other Name: Module, Vehicle Control; Engine Control Module; PCM; ECM
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1997 Chevrolet Blazer | Base, LS, LT | 6 Cyl 4.3 L GAS
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Chevrolet Blazer Module Part Number: 16060836
Product Specifications
- Other Name: Eprom, Emission Control System; Ignition Control Module; Eprom, Emission Control System(ECM Components); Eprom, Emission Control System(EGR Valves)
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-1994 Chevrolet Blazer | Base, Cheyenne, Silverado, Silverado Sport | 8 Cyl 5.7 L GAS, 8 Cyl 6.5 L DIESEL
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Chevrolet Blazer PCM Part Number: 16244210
Product Specifications
- Other Name: Module, Vehicle Control; Engine Control Module; ECM; Module, Emission Control System
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996 Chevrolet Blazer | Base, LS, LT | 6 Cyl 4.3 L GAS
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Chevrolet Blazer Module Part Number: 16157713
Product Specifications
- Other Name: Eprom, Emission Control System; Ignition Control Module; Eprom, Emission Control System(ECM Components)
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-1994 Chevrolet Blazer | Base, Cheyenne, Silverado, Silverado Sport | 8 Cyl 5.7 L GAS, 8 Cyl 6.5 L DIESEL
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Chevrolet Blazer PCM Part Number: 12581565
Product Specifications
- Other Name: Module, Emission Control System; Engine Control Module; ECM
- Replaces: 89017733
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003-2004 Chevrolet Blazer | LS, Xtreme, ZR2 | 6 Cyl 4.3 L GAS
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Chevrolet Blazer ECM Part Number: 88999164
$137.15 MSRP: $243.44
You Save: $106.29 (44%)
Product Specifications
- Other Name: Module Assembly, Engine Control; Engine Control Module; Module, Emission Control System (ECM & EGR Components)
- Replaces: 16146299
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-1994 Chevrolet Blazer | Base, Cheyenne, Silverado, Silverado Sport | 8 Cyl 5.7 L GAS, 8 Cyl 6.5 L DIESEL
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Chevrolet Blazer PCM Part Number: 16263494
$341.63 MSRP: $610.42
You Save: $268.79 (45%)
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:
- 1999-2000 Chevrolet Blazer | Base, LS, LT, Trailblazer | 6 Cyl 4.3 L GAS
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Chevrolet Blazer PCM Part Number: 16197427
$322.76 MSRP: $575.02
You Save: $252.26 (44%)
Product Specifications
- Other Name: Module, PCM (Remanufactured); Engine Control Module; ECM; Module, Emission Control System(EGR Control); Module, Emission Control System
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1995 Chevrolet Blazer | Base, LT | 6 Cyl 4.3 L GAS

Chevrolet Blazer Engine Control Module

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One of the main systems that may be considered key in the Chevrolet Blazer is the Blazer Engine Control Module, or the Blazer ECM. Solely operating as the 'computer' of the vehicle, this system compiles information from numerous sensors to maintain an efficient combustion ration, idling speed, and ignition timing in the vehicle's engine. This makes sure that the Chevrolet Blazer runs optimum making fuel consumptions efficient while at the same time increasing safety. Used for many Blazer models, the Engine Control Module has developed progressively from simple integrated circuitry to complex microprocessors that enable such niceties as variable commands to the valves and direct links to the transmission. For instance, the Chevrolet Blazer, with its rich variety of engines, from the 2.0 L turbocharged I4 to the 3.6 L V6, sees a lot of advantages in the ECM's performances, which raises acceleration and handles well. An example Lancer's V6 variant which can perform 0-60 mph in 6.6 secs to understand how ECOM works to boost performance. Moreover, comfort and technology of Chevrolet Blazer, such as Chevrolet Infotainment 3, enrich the company's assortment and prove that a reliable ECM plays an essential role in satisfying the consumers' demands. Efficiency, safety, and features presented by Chevrolet Blazer Engine Control Module can be considered as exclusive in the automotive market; this proves Chevrolet brand's desire to provide safe and innovative vehicles.

Chevrolet Blazer Engine Control Module Parts Questions & Experts Answers

ECM
12602801
Q: What are the steps involved in servicing the Engine Control Module (ECM) on Chevrolet Blazer?
A:
Decisions regarding powertrain control module (PCM) service include replacing the pcm itself or executing electrically erasable programmable read-only memory (EEPROM) programming. Inspection of the pcm should occur before replacement to verify that a correct part is chosen. The operation of disconnecting power and removing or installing pcm connectors must be performed only when the ignition is off to protect the pcm's internal components. Surface inspection of pcm connectors must be followed by cleaning all debris while double-checking the presence of appropriate pcm module connector gaskets which act to stop contamination. First disconnect the negative Battery Cable before relocating the pcm retention bar along with its retainer to free the pcm from its mounting bracket and then disconnect the electrical connectors. Begin the installation by checking the service number on the replacement pcm matches the defective unit in order to proceed with replacement. Complete the electrical connector attachment by securing screws to 8 n.m (71 lb in) before placing the pcm retainer into bracket slots. After pulling out the retention bar install the negative Battery Cable. Programming the pcm should be performed at the end of the installation.