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 an 8 digit number which indicates the GM part number of the module.
- No. of Fobs Programmed
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The scan tool displays 1 Fob - 4 Fobs to indicate the number of keyless entry transmitters that are programmed for the system.
- Calibration ID
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The scan tool displays a 4 digit number which indicates the calibration ID number of the module.
- Invalid Transmitter
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The scan tool displays More Than 10 or Less Than 10 which indicates how many times an invalid transmitter has been used in the vicinity of the vehicle.
- Key Fob 1 Low Voltage
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The scan tool displays counts which indicates the number of times a low battery voltage level was received.
- Key Fob 1 Battery Status
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The scan tool displays OK to indicate a good battery voltage level was last received.
- Key Fob 2 Low Voltage
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The scan tool displays counts which indicates the number of times a low battery voltage level was received.
- Key Fob 2 Battery Status
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The scan tool displays OK to indicate a good battery voltage level was last received.
- Key Fob 3 Low Voltage
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The scan tool displays counts which indicates the number of times a low battery voltage level was received.
- Key Fob 3 Battery Status
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The scan tool displays OK to indicate a good battery voltage level was last received.
- Key Fob 4 Low Voltage
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The scan tool displays counts which indicates the number of times a low battery voltage level was received.
- Key Fob 4 Battery Status
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The scan tool displays OK to indicate a good battery voltage level was last received.
- Key Pressed on Fob
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The scan tool displays Dr. Door Unlock, Door Lock, All Door Unlock, Rear Release, or Alarm indicating which keyless entry transmitter button was last pressed.
- Last Fob Used
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The scan tool displays Fob 1-Fob 4 which indicates the number of the last keyless entry transmitter used.
- Left Side Front Access Panel
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The scan tool displays On or Off to indicate the current state of the access panel output driver.
- Left Side Rear Access Panel
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The scan tool displays On or Off to indicate the current state of the access panel output driver.
- Right Side Rear Access Panel
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The scan tool displays On or Off to indicate the current state of the access panel output driver.
- PROM ID
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The scan tool displays a 4 digit number which indicates the ID number of the PROM associated with the module.
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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.