Test Lamp to Ignition Control Module Circuit Connector Caution. GMC Truck Envoy

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2009 🢒 Envoy - 4WD 🢒 Preface 🢒 Dangers, Warnings, and Cautions 🢒 Test Lamp to Ignition Control Module Circuit Connector Caution

Caution: Do not use a test lamp in order to test the continuity of the low reference circuit. Damage to the Engine Control Module (ECM) will result.