Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Normal Operation and Fault Conditions
The SASM requires the current vehicle configuration information to operate correctly. Vehicle configuration information is sent to the SASM from the BCM over the HS-CAN each time the ignition is set to ON. The SASM stores this information for later use. When the ignition is set to ON following the installation of a new BCM, the vehicle configuration information stored in the SASM does not match the configuration information sent by the newly installed BCM. Once the BCM has been programmed with the vehicle configuration information, the SASM DTCs must be cleared and the ignition must be cycled from ON to OFF and back to ON again.
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U0300:00 | Internal Control Module Software Incompatibility: No Sub Type Information | Sets when the vehicle configuration information transmitted by the BCM does not match what is stored in the SASM. Incomplete or improper flash programming procedures, swapping modules between vehicles or an internal failure of one or more modules causes a mismatch of vehicle configuration information between the modules. |
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.