LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> GMC >> 2000 >> Envoy >> Repair and Diagnosis >> External Pages >> Different car >> Section 249 (Engine Controls - Self-Diagnostics) >> System Tests >> Malfunction Indicator Lamp Always On >> Description
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Malfunction Indicator Lamp Always On: Description

WARNING: This page is about a different car, the 2003 Cadillac Seville and 2003 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.

Ignition voltage is supplied to the Malfunction Indicator Lamp (MIL). The Powertrain Control Module (PCM) turns the MIL on by grounding the MIL control circuit.

scientia non olet · About LEMON Manuals