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 8-Digit GM Part Number. The scan tool displays the part number of the control module.
- No. of Key Codes Learned
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The scan tool displays 1-10. The scan tool displays the number of transponder values learned by the theft deterrent control module.
- Auto. Learn Timer
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The scan tool displays 0:00 Sec. - 10:00 Min. The scan tool displays the current state of the Auto. Learn Timer which increments in 10 second intervals. The Auto. Learn Timer must time out three times in order for the relearn procedure to be complete.
- Ignition Counter
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The scan tool displays 0-99 counts. The module counts each time the ignition is cycled from ON to OFF.
- Manufactures Enable Counter
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The scan tool displays 0-255. The Manufactures Enable Counter is cleared prior to leaving the assembly plant. This data value is for use at the assembly plant only.
- PCM/VCM in VTD Fail Enable
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The scan tool displays Yes/No. The scan tool displays Yes when the PCM is in fail enable. This indicates a failure occurred in the VTD system.
- PROM ID
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The scan tool displays the PROM ID. The scan tool displays the 4-digit internal PROM ID of the module.
- Security Lamp Status
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The scan tool displays On/Off. The scan tool displays the current state of the security indicator as commanded by the VTD system.
- Seed and Key Timer
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The scan tool displays 0:00 Sec. - 10:00 Min. The scan tool displays the current state of the Seed and Key Timer which increments in 10 second intervals. The Seed and Key Timer must time out in order for the relearn procedure to be complete.
- VTD Auto. Learn Timer
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The scan tool displays Active/Inactive. The scan tool displays the current state of the VTD Auto. Learn Timer, which must time out three times in order for the relearn procedure to be complete.
- VTD Fuel Disable
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The scan tool displays Active/Inactive. The scan tool displays Active when the PCM has received a disable password from the VTD system.
- VTD Fuel Disable Until Ign. Off
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The scan tool displays Yes/No. The scan tool displays Yes when the PCM has received the fuel disable password from the VTD system. This indicates the PCM will not allow fuel delivery until the ignition is switched off prior to another start attempt.
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.