Airbag control unit with part number 26228467

What is the function of Airbag Control Unit 26228467?

The airbag control unit with part number 26228467 is the central control module, also known as the SRS SDM (Sensing and Diagnostic Module), for the entire restraint system in the fifth-generation Chevrolet Tahoe (from 2020 onward). It processes data from crash sensors and, in the event of a collision, controls the deployment of front, side, and head airbags as well as seatbelt pretensioners to ensure occupant safety.

As a safety-critical OEM component, this control unit is responsible for monitoring and regulating all elements of the airbag system. It continuously analyzes signals from acceleration and pressure sensors to reliably detect a collision and activate the appropriate restraint devices within milliseconds.

In newer vehicle generations, such as the Tahoe from 2020 onward, the control unit is often tightly linked to the Vehicle Identification Number (VIN). This pairing ensures that only precisely matched and correctly configured modules operate in the vehicle, further enhancing system safety.

What types of failures occur with 26228467?

The most common cause of failure for control unit 26228467 is stored crash data following an accident, which triggers an intentional lockout of the module. Internal hardware defects (error B1000) also occur, as do configuration and software issues within the control unit itself (error B1019).

After an airbag deployment, so‑called crash data is permanently recorded in the control unit’s memory. This results in error codes such as B0053 (deployment registered) or B0055 00 (side airbag deployment stored). The module then becomes locked and must be professionally reset to restore its functionality.

Another typical defect is an internal fault indicated by error code B1000. This points to a malfunction in electronic components on the circuit board, such as processors, memory chips, or voltage regulators. Such errors can occur even without a prior collision.

How can you recognize a defect in control unit 26228467?

A defect in control unit 26228467 primarily manifests as a constantly illuminated airbag warning light on the instrument cluster. Additionally, specific error codes like B1000, B1019, B0053, or B0055 00—non‑erasable—are displayed. In some cases, communication with the diagnostic tool may also become impossible.

The most obvious symptom is the persistently lit airbag warning light, signaling to the driver that the safety system is not operational and may fail to deploy in the event of a crash.

During a workshop diagnosis, the defect appears as permanently stored error codes. Even after attempting to clear the fault memory, these entries remain because the underlying cause—crash data or hardware failure—has not been resolved.

A more serious symptom is complete loss of communication: the control unit no longer responds to requests from a diagnostic device via the OBD interface, indicating a severe internal malfunction.

In which models is control unit 26228467 installed?

The airbag control unit with part number 26228467 is specifically designed for vehicles manufactured by Chevrolet. At Airbag24, this control unit is predominantly accepted for repair and successfully refurbished for the fifth‑generation Chevrolet Tahoe, produced starting in model year 2020.

At Airbag24, we repair part number 26228467 for the following model:

Chevrolet: Tahoe (fifth generation, from 2020)

To ensure full compatibility, it is crucial that the part number of the defective control unit exactly matches the one listed here. Only then can flawless operation be guaranteed after repair.

How is control unit 26228467 professionally repaired?

At Airbag24, repairing control unit 26228467 begins with a comprehensive analysis of stored error codes. Depending on the nature of the defect, crash data is reset using specialized software, or faulty electronic components on the circuit board are replaced. Finally, proper functionality is verified, and the unit is returned with a 12‑month warranty.

Upon receipt at Airbag24, the control unit undergoes an initial inspection. Using state‑of‑the‑art diagnostic technology, the device’s data is read out to precisely identify all system faults.

The most common repair measure is resetting the crash data. Specialized software allows direct deletion of this data via the diagnostic interface, providing a highly effective and cost‑efficient solution. For hardware defects, only damaged components—such as microcontrollers or memory modules—are carefully replaced with new, high‑quality parts.

Following repair, comprehensive functional tests are performed to ensure the control unit is fully operational and free of defects. We provide a 12-month warranty on every repaired unit.

What shipping options are available at Airbag24?

To send your control unit to Airbag24, you can either ship it yourself at no cost or arrange for UPS pickup. For return shipping, you have free options such as standard UPS delivery or self-collection. For an additional fee, express shipping and cash-on-delivery options are also available to ensure fast and flexible processing.

For outbound shipping, you have two choices: send the removed control unit to us at your own expense, or use convenient UPS pickup from a location of your choice. Alternatively, you can drop off the unit directly at our premises.

For returning your repaired control unit, we offer several options. Standard UPS delivery, with a typical transit time of 1–3 business days, is free of charge. If you need it faster, you can opt for UPS Express delivery (1–2 business days). Both shipping methods are also available with cash-on-delivery. Of course, free self-collection at our facility is also an option.