Airbag control unit with part number 10305387

What is the function of Airbag Control Unit 10305387?

The Airbag Control Unit 10305387, also known as the SRS module or SDM (Sensing Diagnostic Module), is the central control unit for the occupant protection system. It analyzes data from the acceleration sensors and, in the event of a crash, determines whether and which airbags or seatbelt pretensioners need to be deployed to provide optimal protection for vehicle occupants.

Technically speaking, this module is responsible for monitoring the entire chain of the Supplemental Restraint System (SRS). It continuously performs self-tests and ensures that all components—from crash sensors and wiring to the airbag modules themselves—are functioning properly.

Its primary task is real-time analysis of collision data. When a collision exceeds predefined thresholds, the control unit sends ignition signals to the appropriate pyrotechnic charges in the airbags and seatbelt pretensioners.

Why does Control Unit 10305387 fail?

The most common cause of failure for Control Unit 10305387 is the storage of crash data after an accident, which causes the module to become internally locked. Other typical defects arise from external factors such as moisture ingress, overvoltage in the vehicle’s electrical system, or physical damage to wiring and internal electronic components.

After a collision in which the airbags have deployed, the module stores the crash data. This lockout is a manufacturer‑imposed safety measure designed to prevent the reuse of a potentially damaged unit. A professional repair aims to safely reset this stored data.

Electronic faults on the circuit board are also widespread. Corrosion caused by moisture can destroy conductive traces, while voltage spikes may damage sensitive components such as capacitors or sensors. Broken wires, faulty connectors, or issues with seat occupancy mats can likewise lead to malfunctions in the control unit.

How do you recognize a defect in Control Unit 10305387?

A defective Airbag Control Unit 10305387 typically manifests as a permanently illuminated or flashing airbag warning light on the instrument cluster. Often, communication between the control unit and a diagnostic tool is also lost, complicating fault diagnosis and indicating a severe internal malfunction.

The illumination of the SRS warning light is the clearest indication. During its self‑test, the system has detected a critical error, signaling that the airbags might no longer deploy reliably in the event of a crash.

Another clear symptom occurs when a workshop’s diagnostic equipment cannot access the airbag control unit. Frequently, error code 65535 (control unit defective) or other internal codes such as B1000 or 93F9 appear in the fault memory, directly pointing to a problem within the module.

In which models is Control Unit 10305387 installed?

The Airbag Control Unit with part number 10305387 is specifically designed for Chevrolet vehicles. It is primarily used in Chevrolet Impala models, particularly the 7th generation produced between 1994 and 1996, as well as the 2nd generation of this model line.

At Airbag24, we repair this control unit for the following specific vehicle models:

Chevrolet: Impala 2nd Generation, Impala 7th Generation (1994–1996)

It is crucial to always verify compatibility using the part number printed on the control unit itself to ensure proper functionality after repair.

What are the benefits of repairing 10305387?

Repairing the Airbag Control Unit 10305387 offers a significant cost advantage—up to €800 compared to purchasing an expensive new unit. Moreover, repair is a sustainable solution that conserves resources, as the original vehicle component remains intact and no time‑consuming re‑coding is required.

The financial aspect is the biggest benefit. Instead of a new unit, which often entails substantial expenses, refurbishment restores full functionality at a fraction of the price. Experts estimate savings of between €700 and €800.

A repaired original control unit retains its original vehicle configuration. As a result, complex re‑coding or programming—often necessary with new or used replacement units—is unnecessary. After repair, the unit can be reinstalled using a simple “plug-and-play” approach.

Furthermore, every repair comes with 2 years’ statutory liability for defects, underscoring the safety and reliability of the restoration process.

How is control unit 10305387 professionally repaired?

Professional repair of control unit 10305387 includes a detailed diagnosis to pinpoint faults, clearing stored crash data, and replacing defective electronic components. Following restoration, comprehensive testing and calibration ensure full functionality.

Upon receipt at Airbag24, the control unit undergoes an initial inspection. Technicians read the fault memory to verify reported issues and identify the exact cause—whether it’s an internal fault or a lockout due to crash data.

The core of the repair involves addressing the root cause of the defect. This includes safely and expertly resetting the crash-data lockout or replacing damaged components on the circuit board, such as capacitors, sensors, or memory chips.

Finally, the repaired module is tested on a specialized test bench. A realistic vehicle‑use scenario is simulated to ensure the control unit communicates flawlessly and performs all functions correctly. The repair comes with 2 years' statutory liability for defects.