TDC Offset Programming

This procedure allows the PCM memory to be updated with the correct top dead center offset for the vehicle. DTC 88 will be stored until this procedure has been completed.

Ensure that battery is charged. Run engine at idle until it is at operating temperature. Connect TECH-1 scan tool. Select OUTPUT TESTS and INJ. PUMP. Start TDC LEARN. Run LEARN for 20 seconds. Verify TDC OFFSET in data list.

NOTE: If procedure is not performed correctly, DTC 88 will set.

If TDC OFFSET is not programmed perform the following:

Check all PCM connections.
Check Techline for latest software version.
Try to program PCM again.

If PCM does not accept programming, replace PCM.