GM Service Manual Online
For 1990-2009 cars only

Displaying IPC Diagnostic Trouble Codes

Complete the following steps:

  1. Turn the ignition switch to ON.
  2. Simultaneously press the following buttons until all VF display segments (IPC and CCP) are illuminated:
  3. • The digital IPC, the climate control center (CCC) OFF and warmer (RED) buttons
    • The analog IPC, the climate control panel (CCP) OFF and PASS warmer (up arrow) buttons
  4. After the segment display test, the driver message center displays all set DTC, current and history, in the following order:
  5. 3.1. PCM DTC
    3.2. IPC DTC
    3.3. ACM DTC
    3.4. SDM DTC
    3.5. TCS DTC
    3.6. PZM DTC
    3.7. IRC DTC
    3.8. RFA DTC
    3.9. CCP DTC
    3.10. MSM DTC
    3.11. MMM DTC
    3.12. PHN DTC

    The RSS, CCP, MSM, MMM and PHN DTC appear only on vehicles equipped with these options.

  6. Press the FAN DOWN button in order to bypass the DTC display.