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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 137 (Engine Controls Self Diagnostics - 4.8L, 5.3L & 6.0L Gasoline) >> System Tests >> Malfunction Indicator Lamp Inoperative >> Test Description

Test Description

WARNING: This page is about a different car, the 2003 GMC Savana and 2003 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.

The number below refers to the step number in the diagnostic procedure.

  1. 4

    This step tests for a short to voltage on the MIL control circuit. With the fuse removed there should be no voltage on the MIL control circuit.

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