GM Service Manual Online
For 1990-2009 cars only
8 Digit GM Part Number: The scan tool displays the 8 Digit GM Part Number. The scan tool displays the part number of the control module .

Auto. Learn Timer: The scan tool displays  :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.

Battery Reconnect: The scan tool displays On/Off. When the module senses a battery reconnect the scan tool displays On.

Calibration ID: The scan tool displays the Calibration ID. Display indicates the calibration ID of the theft deterrent control module.

CTD State: The scan tool displays Standby/Open/Ignition 1/Locked/Ignition & Door/Arm Pending/Armed/Alarm. The scan tool displays the current state of the CTD system.

Driver Door Cylinder Sw.: The scan tool displays Idle/Unlock. The scan tool displays Unlock when the door key cylinder is rotated to the unlock position.

Driver Door Jamb Sw.: The scan tool displays On/Off. Display indicates the current state of the driver door jamb switch. On indicates the door is open and Off indicates the door is closed.

Ignition Counter: The scan tool displays 0-99. The module counts each time the ignition is cycled from ON to OFF.

Julian Date of Build: The scan tool displays the Julian Date of Build. Display indicates the date the module was built.

Left Rear Door Jamb Sw.: The scan tool displays On/Off. Display indicates the current status of the left rear door jamb switch. On indicates the door is open and off indicates the door is closed.

Manufactures Enable Counter: 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.

No. of Key Codes Learned: The scan tool displays 1-10. The scan tool displays the number of transponder values learned by the theft deterrent control module.

Pass Door Jamb Sw.: The scan tool displays On/Off. Display indicates the current state of the passenger door jamb switch. On indicates the door is open and Off indicates the door is closed.

PCM/VCM in VTD Fail Enable: 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.

Power Mode Change: The scan tool displays On/Off. The scan tool displays On when the power source has changed from ON, IGN or RAP.

Prom I.D.: The scan tool displays the PROM ID. The scan tool displays the 4 digit internal PROM ID of the module.

Rt. Rear Door Jamb Sw.: The scan tool displays On/Off. Display indicates the current state of the right rear door jamb switch. On indicates the door is open and Off indicates the door is closed.

Security Lamp Status: 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: The scan tool displays  :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: The scan tool displays Active/Inactive. The scan tool displays the current state of the Auto. Learn Timer, which must time out three times in order for the relearn procedure to be complete.

VTD Fuel Disable: 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: 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.

VTD States: The scan tool displays Ignition Off/Monitor Key/Learn More Keys/Normal Decision/No Coded Key/Auto. Learn Pending. The scan tool displays the current state of the of the theft deterrent control module.

Year Module Built: The scan tool displays the year the module was built.