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Home >> GMC >> 1992 >> Forward Control 4.3 Z, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Miscellaneous ECM Controls >> Chart C-10, A/C Clutch Control Circuit Diagnosis (Rear A/C Only) (2 Of 2) 3.1L >> Notes

Chart C-10, A/C Clutch Control Circuit Diagnosis (Rear A/C Only) (2 Of 2) 3.1L: Notes

NOTE: Test number refers to test numbers on diagnostic charts.
  1. Determines if signal is reaching ECM from A/C control panel. Signal should only be present when A/C mode or defrost mode is selected.
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