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.
Scan Tool Data Definitions
- 8 Digit GM Part Number
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The scan tool displays the eight digit part number of the module selected.
- Base Model Part Number
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The scan tool displays the eight digit base part number of the lift gate module.
- Battery Voltage
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The scan tool displays 9.0-15.0 volts. The state of the battery voltage supplied to the module selected.
- Boot S/W Part No.
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The scan tool displays the eight digit boot software part number of the lift gate module.
- Boot S/W Suffix
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The scan tool displays the two digit suffix number of the lift gate module boot software.
- Calibration S/W Part No.
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The scan tool displays the eight digit calibration software part number of the lift gate module.
- Calibration S/W Suffix
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The scan tool displays the two digit suffix number of the lift gate module calibration software.
- Current Power Mode
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The scan tool displays Off Awake/Retained Accessory Power/Accessory/Run/Crank. The ignition switch input states to the EGM used for power moding.
- Drop Latch Switch
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The scan tool displays Active/Inactive. The endgate drop latch switch input to the EGM, where a switch transition is displayed as Active.
- Endgate Key Cylinder
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The scan tool displays Idle/Close/Open. The endgate key cylinder switch input to the EGM, where a switch transition is displayed as either Close or Open.
- Endgate Window Pos. 1
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The scan tool displays Counts. The endgate window hall effect sensor input to the EGM displayed in counts.
- Endgate Window Pos. 2
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The scan tool displays Counts. The endgate window hall effect sensor input to the EGM displayed in counts.
- Ign. Since Current DTC
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The scan tool displays Cycles. The number of ignition switch cycles since the last DTC was set.
- Julian Date of Build
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The scan tool displays the four digit date of the module selected build.
- Learned Window Closed Position
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The scan tool displays Counts. The endgate window closed position input to the EGM displayed in counts.
- Learned Window Open Position
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The scan tool displays Counts. The endgate window open position input to the EGM displayed in counts.
- Left Lower Latch
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The scan tool displays Active/Inactive. The endgate lower left latch motor output from the EGM, where a latch motor transition to open is displayed as Active.
- Left Upper Latch
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The scan tool displays Active/Inactive. The endgate upper left latch motor output from the EGM, where a latch motor transition to open is displayed as Active.
- Liftgate Ajar Switch
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The scan tool displays Closed/Ajar. The liftgate ajar switch input to the LGM, where an open lift gate is displayed as Ajar.
- Liftgate Unlock Switch
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The scan tool displays Active/Inactive. The liftgate unlock switch input to the LGM.
- Liftglass Ajar Switch
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The scan tool displays Closed/Ajar. The liftglass ajar switch input to the LGM, where an open liftglass is displayed as Ajar.
- Lock Command
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The scan tool displays Unlock/Lock. The virtual state of the endgate or liftgate latch motors.
- Lower Left Ajar Switch
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The scan tool displays Closed/Ajar. The endgate lower left ajar switch input to the EGM, where an open lower left latch motor is displayed as Ajar.
- Operational S/W Part No.
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The scan tool displays the eight digit operational software part number of the lift gate module.
- Operational S/W Suffix
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The scan tool displays the two digit suffix number of the lift gate module operational software.
- Rear Gate/Door
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The scan tool displays Open/Closed. The scan tool displays the status of the rear gate/door.
- Requested Lock/Unlock
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The scan tool displays Idle/Lock/Unlock. The liftgate unlock switch input to the LGM.
- Right Upper Latch
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The scan tool displays Active/Inactive. The endgate upper right latch motor output from the EGM, where a latch motor transition to open is displayed as Active.
- Software Part Number
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The scan tool displays the eight digit part number of the end gate module software.
- Software Revision Number
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The scan tool displays the two digit revision number of the end gate module software.
- Swing Latch Switch
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The scan tool displays Active/Inactive. The endgate swing latch switch input to the EGM, where a switch transition is displayed as Active.
- Upper Left Ajar Switch
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The scan tool displays Closed/Ajar. The endgate upper left ajar switch input to the EGM, where an open upper left latch motor is displayed as Ajar.
- Upper Right Ajar Switch
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The scan tool displays Closed/Ajar. The endgate upper right ajar switch input to the EGM, where an open upper right latch motor is displayed as Ajar.
- Window Motor
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The scan tool displays Idle/Up/Down. The state of the window motor output from the EGM.
- Year Module Built
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The scan tool displays the four digit date of the year the module selected was built.
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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.