LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> GMC >> 2003 >> Envoy 4WD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Self-Diagnostics - 4.2L >> System Tests >> Malfunction Indicator Light Inoperative >> Description
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Malfunction Indicator Light Inoperative: Description

Battery positive voltage is supplied directly to the Malfunction Indicator Light (MIL). The Powertrain Control Module (PCM) turns the MIL ON by grounding the MIL control circuit. There should be a steady Malfunction Indicator Light (MIL) with ignition on, with engine off.

scientia non olet · About LEMON Manuals