OEM 2004 Chevrolet Malibu Engine Control Module

2004 Chevrolet Malibu Parts Questions & Experts Answers

• Q: How to replace the Engine Control Module (ECM) on 2004 Chevrolet Malibu?

  A: Engine oil life information requires recording through a scan tool before pcm replacement because failure to program the new module leads to a default setting of 100% oil life which triggers an immediate oil change at 5000 km (3000 mi) from the previous change. Before disconnecting the negative Battery Cable you must record all preset radio stations. The next step involves disconnecting pcm harness connectors followed by releasing the retaining tab in the battery box lower half using a small screwdriver or suitable tool to remove the pcm by lifting it upward. You should insert the new pcm into its bracket at the battery box front before pushing it downward to achieve a retaining tab snap. Connect all pcm harness connectors allowing only the appropriate fasteners to go in their designated locations while completely skipping paints and lubricants as well as corrosion inhibitors for fasteners. The installer should tighten the battery terminal bolts to 17 nm (13 lb ft) after connecting the negative Battery Cable. The post-pcm reprogramming process should include performing a Crankshaft relearn for misfire diagnosis learning followed by verification of a dtc absence and clock and radio station reset procedures.