How to replace the Engine Control Module (ECM) on 2004 Chevrolet Cavalier?

To change the Powertrain Control Module (PCM), make sure that the ignition is switched off. Disassemble the negative battery cable, and then the PCM harness connectors. Take the PCM out of the bracket and then install the new PCM and reconnect the harness. Last but not least, replace the battery and program PCM.

OEM 2004 Chevrolet Cavalier Engine Control Module

Engine Control Computer

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2004 Chevrolet Cavalier Control Module Part Number: 19210073
$217.58 MSRP: $401.22
You Save: $183.64 (46%)
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Product Specifications
- Other Name: Module Assembly, Powertrain Control; Engine Control Module; PCM; ECM; Module, Emission Control System
- Item Weight: 2.10 Pounds
- Item Dimensions: 8.5 x 7.5 x 4.5 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 19210073
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2004 Chevrolet Cavalier Submodels:
- Base, LS, LS Sport | 4 Cyl 2.2 L BI-FUEL, 4 Cyl 2.2 L GAS

2004 Chevrolet Cavalier Engine Control Module

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2004 Chevrolet Cavalier Engine Control Module Parts and Q&A

Q: How to replace the Engine Control Module (ECM) on 2004 Chevrolet Cavalier?
A: To change the Powertrain Control Module (PCM), make sure that the ignition is switched off. Disassemble the negative battery cable, and then the PCM harness connectors. Take the PCM out of the bracket and then install the new PCM and reconnect the harness. Last but not least, replace the battery and program PCM.