Chevrolet Malibu 2nd Gen Airbag Control Unit Repair

What is a Chevrolet Malibu 2nd Gen airbag control module?

The Chevrolet Malibu 2nd Gen airbag control unit is the central safety unit that activates all occupant restraint systems in the event of an accident. It continuously monitors sensors in the vehicle, stores critical crash data, and ensures the proper functioning of all airbag modules and seatbelt pretensioners to provide maximum protection in an emergency.

This module, also known as the SRS Airbag Computer or SDM (Sensing Diagnostic Module), is responsible for evaluating impact information.

It decides within milliseconds which airbags and seat belt pretensioners need to be deployed, based on complex algorithms and sensor data.

Why is the Chevrolet Malibu 2nd Gen airbag control module defective?

A Chevrolet Malibu 2nd Gen airbag control unit often fails due to internal memory or communication errors, which can occur after a crash or due to aging of the electronics. These defects can also be triggered by voltage spikes or the storage of irreparable crash data, which then activates the airbag warning light and impairs system function.

Common causes include the storage of "crash data" after an accident, which blocks the module and requires a reset.

Internal hardware errors or problems with the power supply can also cause the module to no longer function correctly and a Chevrolet Malibu 2nd Gen airbag control unit repair may be necessary.

Such failures usually result in the activation of the airbag warning light in the dashboard, which requires immediate action.

Common error codes for Chevrolet Malibu 2nd Gen airbag control unit repair

During Chevrolet Malibu 2nd Gen airbag control module repair, specific B-codes may occur, indicating internal problems with the airbag control module and requiring detailed diagnosis. These codes often signal errors in the communication, internal memory, or power supply of the module itself, as opposed to sensors or seatbelt pretensioners.

• B1000 → Control unit communication error → Problems with data transfer between modules.
• B1001 → Internal memory error → Defective or inconsistent data in the module memory.
• B1005 → Supply voltage out of range → Insufficient or fluctuating power supply to the control unit.
• B1010 → System self-test error → The module could not successfully complete its own internal functional test.
• B1035 → Diagnostic Self Test Error → A malfunction occurred during the system's diagnostic functions.
• B123X - B124X → Various internal logic and communication errors → Wide range of problems within the module logic or connection.

What part numbers are available for the Chevrolet Malibu 2nd Gen airbag control unit repair?

For Chevrolet Malibu 2nd Gen airbag control module repair, General Motors part number 20829304 is the primary valid and verified OEM part number for model years 2008–2012. It is critical to use this exact part number to ensure compatibility and functionality and avoid incorrect purchases.

Part number 20829304 is listed in numerous GM parts catalogs and at auto parts retailers as the correct airbag control unit for the Malibu on the Epsilon II platform (MY 2008-2012).

Although the number 13510482 sometimes appears in connection with Chevrolet Malibu airbag modules, it is usually intended for later models (from MY 2012, usually 9th Gen) and not for the pure 2nd generation (2008-2012).

It is therefore important to check the Vehicle Identification Number (VIN) to ensure that the correct part number is selected for your Chevrolet Malibu 2nd Gen airbag control unit repair.