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Entering Diagnostics

Operating the vehicle in diagnostics for extended time periods without the engine running or without a battery charger will cause the battery to run down and possibly relate false diagnostic information, or cause a no start condition. To ensure proper operation, attach a battery charger if vehicle is to be operated in diagnostics without engine running for periods longer than 1/2 hour.

To enter diagnostic mode, turn ignition to ON position. Press "OFF" and "WARMER" buttons on the Climate control panel simultaneously, and hold until a segment check is displayed on IPC and COMBO panel. See Fig 1 and Fig 2 . If any or all segments do not display on the IPC and COMBO panel, go to SEGMENT CHECK FAILURE  .

Fig 1: Entering Diagnostics Mode Flow Chart (1 Of 2)
G00129509Courtesy of GENERAL MOTORS CORP.
Fig 2: Entering Diagnostics Mode Flow Chart (2 Of 2)
G00129510Courtesy of GENERAL MOTORS CORP.
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