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.
Generator Control Module Scan Tool Information
2004 Oldsmobile Bravada AWDSECTION Generator Control Module Scan Tool Information
WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
Starter/Generator Control Module Scan Tool Data Parameters
| Parameter | System State | Expected Value | Description |
|---|---|---|---|
| Operating Conditions: Ignition ON | |||
| APM Control Mode | - | Off | The scan tool displays Off, High to Low, Low to High or Not Used. This is the state of the auxiliary power module (APM) control mode. |
| APM Control Status | - | Charging | The scan tool displays Charging, Current Limited, Shutdown or Not Used. This is the auxiliary power module (APM) control status. |
| Desired APM Voltage | - | Varies | This displays Volts. This is the desired auxiliary power module (APM) voltage. |
| Generator Starter Field Current | - | Varies | This displays amps. |
| Generator Starter Field Current | - | Enable | The scan tool displays Enable or Disable. This is the current state of the generator starter field. |
| Hill Hold Solenoid 1 | - | Varies | This displays %. |
| Hill Hold Solenoid 2 | - | Varies | This displays %. |
| Hill Hold Solenoid Relay | - | Varies | This displays Enable or Disable. This is the current state of the hill hold solenoid relay. |
| Hood Position | - | Closed | The scan tool displays Open or Closed. This is the current position of the hood switch. |
| Hybrid System Voltage | - | Varies | This displays Volts. This is the current hybrid system voltage. |
| SGCM 12 Volt Converter | - | Varies | This displays amps. |
| SGCM Converter Temperature | - | Varies | This displays °C (°F). This is the current starter/generator control module (SGCM) converter temperature. |
| SGCM Internal Temperature | - | Varies | This displays °C (°F). This is the current starter/generator control module (SGCM) internal temperature. |
| SGCM Inverter Temperature | - | Varies | This displays °C (°F). This is the current starter/generator control module (SGCM) inverter temperature. |
| Starter Generator Speed | - | Varies | This displays RPM. |
| Starter Generator Temperature | - | Varies | This displays °C (°F). |
Starter/Generator Control Module Scan Tool Output Controls
| Output Control | Description |
|---|---|
| Brake Hold Sol. 1 | This output control commands the brake hold solenoid 1 ON and OFF. |
| Brake Hold Sol. 2 | This output control commands the brake hold solenoid 2 ON and OFF. |
| SGCM Field Current | This output control commands the starter/generator control module (SGCM) field current ON and OFF. |
RENDER: 1.0x
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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.