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

The powertrain control module (PCM) service includes pcm replacement as well as electrically erasable programmable read-only memory (EEPROM) programming. Check that the pcm replacement part is the proper one during immediate inspection before performing the replacement. It is essential to switch off ignition power before working on pcm connectors because this prevents damage inside the pcm module. Induce a thorough examination of the pcm connector surfaces for debris so that you can verify proper installation of the pcm module connector gaskets for contaminant prevention. Performing pcm removal requires users to disconnect the negative Battery Cable followed by moving the pcm retention bar away from the pcm which enables pcm removal from the mounting bracket prior to electrical connectors' disconnection. When it comes to pcm installation you need to remove it from the package then verify that the service number corresponds with the faulty pcm. Attach the pcm electrical connectors before securing the screws to 8 n.m (71 lb in). Set the pcm retainer into the bracket slots followed by pulling the retention bar until it is in place.

OEM Chevrolet Blazer Engine Control Module

Engine Control Computer

Select Vehicle by Model
Select Vehicle by VIN

Select Vehicle by Model

Make

Model

Year

Select Vehicle by VIN

For the most accurate results, select vehicle by your VIN (Vehicle Identification Number).

19 Engine Control Modules found

View related parts
Chevrolet Blazer 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 Chevrolet Blazer | Base, Xtreme, ZR2 | 6 Cyl 4.3 L GAS
View related parts
Chevrolet Blazer ECM Part Number: 12700116
$173.70 MSRP: $352.81
You Save: $179.11 (51%)
ADD TO CART
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
View related parts
Chevrolet Blazer Control Module Part Number: 88999146
$136.60 MSRP: $273.60
You Save: $137.00 (51%)
Ships in 1-2 Business Days
ADD TO CART
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
View related parts
Chevrolet Blazer ECM Part Number: 88961143
$152.54 MSRP: $271.80
You Save: $119.26 (44%)
Ships in 1-2 Business Days
ADD TO CART
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
View related parts
Chevrolet Blazer 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:
- 2020-2022 Chevrolet Blazer | LT, Premier | 4 Cyl 2.0 L GAS
View related parts
Chevrolet Blazer ECM Part Number: 12725787
$280.87 MSRP: $508.39
You Save: $227.52 (45%)
Ships in 1-3 Business Days
ADD TO CART
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
View related parts
Chevrolet Blazer ECM Part Number: 12725663
$257.29 MSRP: $476.02
You Save: $218.73 (46%)
Ships in 1-3 Business Days
ADD TO CART
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
View related parts
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
View related parts
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
View related parts
Chevrolet Blazer Control Module Part Number: 88999179
$265.75 MSRP: $473.30
You Save: $207.55 (44%)
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
View related parts
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
View related parts
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
View related parts
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
View related parts
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
View related parts
Chevrolet Blazer Control Module Part Number: 9366810
$266.44 MSRP: $470.38
You Save: $203.94 (44%)
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
View related parts
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
View related parts
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
View related parts
Chevrolet Blazer 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 Chevrolet Blazer | LS, Xtreme, ZR2 | 6 Cyl 4.3 L GAS
View related parts
Chevrolet Blazer 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 Chevrolet Blazer | LS, LT, Trailblazer, Xtreme | 6 Cyl 4.3 L GAS

Chevrolet Blazer 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 Chevrolet Blazer parts. Prices are unbeatable, so you can keep more in your pocket. Every OEM Chevrolet Blazer 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.

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 and Q&A

PCM
19299227
Q: What are the steps involved in servicing the Engine Control Module (ECM) on Chevrolet Blazer?
A:
The powertrain control module (PCM) service includes pcm replacement as well as electrically erasable programmable read-only memory (EEPROM) programming. Check that the pcm replacement part is the proper one during immediate inspection before performing the replacement. It is essential to switch off ignition power before working on pcm connectors because this prevents damage inside the pcm module. Induce a thorough examination of the pcm connector surfaces for debris so that you can verify proper installation of the pcm module connector gaskets for contaminant prevention. Performing pcm removal requires users to disconnect the negative Battery Cable followed by moving the pcm retention bar away from the pcm which enables pcm removal from the mounting bracket prior to electrical connectors' disconnection. When it comes to pcm installation you need to remove it from the package then verify that the service number corresponds with the faulty pcm. Attach the pcm electrical connectors before securing the screws to 8 n.m (71 lb in). Set the pcm retainer into the bracket slots followed by pulling the retention bar until it is in place.