gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Malfunction Indicator Lamp (MIL) Always On|Page 3778 > < Malfunction Indicator Lamp (MIL) Always On|Page 3776
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Steps 1-14

The numbers below refer to the step numbers on the diagnostic table.
3. This step determines if the condition is with the MIL control circuit or the PCM.
4. This step determines if a voltage is constantly being applied to the control circuit.

Malfunction Indicator Lamp (MIL) Always On|Page 3778 > < Malfunction Indicator Lamp (MIL) Always On|Page 3776