OEM 2006 Buick LaCrosse Engine Control Module

2006 Buick LaCrosse Parts Questions & Experts Answers

• Q: How to replace the Engine Control Module (ECM) on 2006 Buick LaCrosse?

  A: One should begin the ecm replacement process by turning off the ignition to avoid hurting components. A scan tool should be used to obtain engine oil life percentage data for documentation because omitting this information will force the simultaneous oil change at 5000 km from the previous change when the replacement module defaults to a full 100 percent oil life indicator. Check for zero-voltage at the ecm Fuse located inside the underhood Fuse block through main relay measurements with a dvom when ignition is off. Separate the battery negative wire. Take out the ecm and tcm/ipc and ecm/tcm fuses that exist in the underhood Fuse block. Ease the body side (outboard) ecm connector by using the lever lock and rotating the clamp lever while keeping the lock slide depressed. Touching the pins of connectors should be avoided because electrostatic discharge can cause damage to the components. Start by removing the engine side (inboard) ecm connector locking mechanism followed by detaching its redundant ground wire and bolt. Finally separate the ecm bolts from the unit. Ecm bracket bolts become removable in such cases along with the actual bracket. The ecm bracket needs replacement after removal so reinstall the bracket while tightening its bolts to 10 n.m (89 lb in). Introduce the ecm while maintaining connector pin contact and fasten it with ecm bolts which must be tightened to 10 n.m (89 lb in). Secure the ecm redundant ground wire and its bolt with 5 n.m (44 lb in) torque value. The connector at the engine end (inboard) should be connected first followed by the connector at the body side (outboard). The underhood Fuse block needs the ecm/tcm and tcm/ipc fuses alongside the ecm fuses reinstalled before reattaching the battery negative cable. The programming process ends with turning off the ignition while waiting 5 seconds.