Airbag control unit with part number 13552072

What does the airbag control unit 13552072 do?

The control unit 13552072 manages the restraint system (SRS) in the car of Chevrolet. It records the signals from the crash sensors, decides within milliseconds in the event of an accident on airbags and seatbelt pretensioners, and checks the system permanently. Faults are indicated via the airbag warning light.

All sensors and triggering elements report their states to the control unit, which derives the commands from them.

After an accident, the unit stores crash data and locks itself.

Why does the control unit 13552072 fail?

The most common cause is stored crash data that lies in the unit after an accident, even without a triggered airbag. A normal diagnostic tool does not remove it. Other causes include aging, solder joints and moisture.

The further causes include the following:

• Aged electronic components whose behaviour changes over time.
• Cold solder joints that give way under vibration or heat.
• Moisture and corrosion at the plug connections.
• Voltage spikes, for example with a weak battery or when starting with a jump start.

The crash data is erased during the repair.

How can you tell that the 13552072 is defective?

Typical signs are the airbag warning light in the instrument cluster, which stays on permanently or intermittently, and an error message there. In addition, a diagnostic tool gets no connection to the control unit, and the fault memory cannot be cleared.

The signs include the following:

• The airbag warning light, which stays on permanently or intermittently.
• An error message in the instrument cluster.
• No connection between diagnostic tool and control unit.
• A fault memory that cannot be cleared.

In an emergency, airbags and seatbelt pretensioners may not trigger with such a finding. A warning of this kind should therefore be taken to specialists promptly.

Which vehicles is the 13552072 fitted in?

The control unit 13552072 is fitted in these vehicles: Chevrolet Silverado GMT T1XX (from 2018). Model and year of construction in the vehicle registration document show whether your car is meant.

At a glance:

• Chevrolet Silverado GMT T1XX (from 2018)

You can make the label comparison with the part number on the removed unit. That only confirms that you have the correct unit in front of you, nothing more. Whether the control unit is defective or a plug or cable causes the fault is shown only by reading out the fault memory. So have it read out before removal.

How does the repair of the 13552072 work?

First have the fault memory read out and attach the log to the unit. Only then disconnect the battery and remove the control unit. Then create a repair order online and send the unit in well packed.

At Airbag24 the unit is checked, defective components are repaired, stored crash data is erased, and a function test is carried out. For these steps, namely inspection, repair and test, Airbag24 usually needs 3–4 working days. Afterwards your own unit goes back to you.

Our repairs come with 2 years' statutory liability for defects. The repaired control unit comes back with all vehicle data and is ready for use as soon as it is refitted — no coding or programming is required.

How does the control unit 13552072 get to Airbag24?

Either you send the control unit in as a parcel, or you book a UPS collection for an extra charge. Airbag24 sends it back to you by UPS after the repair.

Include the printed repair order and pack the unit shockproof.