What is a Pontiac Bonneville H-Body airbag control module?
The Pontiac Bonneville H-Body airbag control unit, also known as the Sensing Diagnostic Module (SDM), is your vehicle's central safety unit that activates all occupant restraint systems in the event of an accident. It continuously monitors sensors, stores relevant crash data, and ensures the proper functioning of all airbag modules for passenger safety. A Pontiac Bonneville H-Body airbag control unit repair can restore functionality.
This module plays a critical role in the passive safety of the Pontiac Bonneville H-Body by precisely detecting impact events. It controls the deployment of airbags and seatbelt pretensioners in fractions of a second to protect occupants.
In addition to triggering, the control unit also stores important diagnostic information and error codes. This is essential for troubleshooting and potential Pontiac Bonneville H-Body airbag control unit repair after an accident or system failure.
Why is the Pontiac Bonneville H-Body airbag control module defective?
A Pontiac Bonneville H-Body airbag control unit can be defective because it irreversibly stores crash data after an accident and locks itself, or internal errors can arise due to aging or electrical problems. This often leads to the airbag warning light illuminating, making a Pontiac Bonneville H-Body airbag control unit repair unavoidable, as otherwise the system will no longer function.
After a collision, the airbag control unit is usually broken because it is specifically designed for one-time deployment and permanently stores impact data. These "hard codes" prevent further use of the module until a professional reset is performed.
Even without an accident, an airbag control unit can fail. Common causes include internal circuit faults, corrosion on connectors, or voltage fluctuations, which can damage the electronic components and require diagnostics.
Common error codes for Pontiac Bonneville H-Body airbag control unit repair
There are no specifically documented, exclusive trouble codes for the Pontiac Bonneville H-Body airbag control module with OEM part number 25725745. Instead, generic GM B-codes are used, indicating a problem within the airbag system. A precise diagnosis always requires a GM-specific diagnostic tool like the Tech2 to identify the exact cause and perform a successful Pontiac Bonneville H-Body airbag control module repair.
The following codes are generic examples of common airbag ECU errors in GM vehicles and should be checked with an appropriate scanner:
- B1000 → Control unit communication error → Signal interruption or internal defect.
- B1001 → Internal memory error → Damage to the internal memory, often after a crash.
- B1046 → Airbag control module self-test failed → The module detects an internal error during the system test.
- B1100 → Airbag warning light defective → The warning light itself is not working correctly or has a short circuit.
- B1500 → Airbag deployment circuit signal error → Problem in the circuit that deploys the airbag.
- B1600 → Internal control unit error → A general error within the control unit electronics.
The exact meaning and cause of these error codes must always be verified by a professional diagnostics at a workshop. External sensors and belt tensioners trigger separate error codes that do not affect the control unit itself.
What part numbers are available for Pontiac Bonneville H-Body airbag control unit repair?
The only uniquely verified OEM part number for the Pontiac Bonneville H-Body airbag control module is the original GM part number 25725745, which is confirmed by specialized repair services. For a Pontiac Bonneville H-Body airbag control module repair, it is crucial to use this specific number or send the existing module in for repair, as alternative part numbers could not be validated in available sources.
Part number 25725745 is listed on specialized airbag repair websites specifically for the Pontiac Bonneville H-body airbag control unit. This makes it the most reliable reference for replacing or repairing this component.
Since no other OEM numbers or valid replacement parts for this specific airbag module have been found in independent manufacturer catalogs or large parts databases, repairing the existing part is often the most efficient solution. Professional services can reset the defective module, significantly reducing the cost of a completely new one.