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For 1990-2009 cars only

NP4/8 Unable to Program TCCM Module after Replacement

Subject:NP4/8 Unable to Program TCCM Module after Replacement

Models:.



When servicing the vehicle with the VIN you entered, the following diagnosis might be helpful if the vehicle exhibits the described symptoms.

Condition/Concern:

  1. After ATC Module replacement, unable to program.
  2. Asterisks will appear on the screen.

Recommendation/Instructions:

In order to successfully program a replacement ATC, it is important to follow these instructions:

  1. Ensure the Tech 2 and TIS are updated to the most current software versions.
  2. Using the Tech 2 "Request Info", always follow proper procedures and precautions.
  3. Connect the Tech 2 to the TECHLINE PC and select Service Programming in TIS.
  4. To program a replacement ATC select Replace and Program ECU under "Select Program Process". If this option is not selected and a programming event is attempted the following error will occur: "E2906: Calibrations marked with an asterisk (*) are not recognized by this TIS 2000 release. They are either newer than what is available on this TIS 2000 release, or they are non-GM calibrations. Please contact the Customer Support Center".
  5. After selecting "Replace and Program ECU" select the appropriate calibration and complete the programming event.

If after following this procedure the error message is still displayed or if the programming event is not successful, contact the Techline Customer Support Center (TCSC) for assistance at 1-800-828-6860 or visit the Techline web site at techline.gm.com.

Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. If these steps do not resolve the condition, please contact GM TAC for further diagnostic assistance. This diagnostic approach was developed for the vehicle with the VIN you entered and should not be automatically be used for other vehicles with similar symptoms.