SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSOLDSMOBILE2004BRAVADA AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1116 (ENGINE CONTROLS - 3.6L (LY7) (INTRODUCTION))REPAIR INSTRUCTIONSENGINE CONTROL MODULE (ECM) REPLACEMENTREMOVAL PROCEDURE
2004 Oldsmobile Bravada AWD

Removal Procedure

2004 Oldsmobile Bravada AWDSECTION Removal Procedure
WARNING: This page is about a different car, the 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Always turn the ignition off when installing or removing the ECM connectors in order to prevent damage to the components.
    IMPORTANT: It is necessary to record the remaining engine oil life. If the replacement module is not programed with the remaining engine oil life, the engine oil life will default to 100 percent. If the replacement module is not programmed with the remaining engine oil life, the engine oil will need to be changed at 5000 km (3,000 mi) from the last engine oil change.
  1. Using a scan tool, retrieve the percentage of remaining engine oil. Record the remaining engine oil life.
  2. Turn the ignition OFF.
    3. IMPORTANT: Ensure that there is no main relay circuit voltage (ECM Fuse).
  3. Use a DVOM in order to measure the main relay circuit voltage at the engine control module (ECM) fuse in the underhood fuse block. Refer to Electrical Center Identification Views in Wiring Systems.
  4. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnect/Connect Procedure (LA1) or Battery Negative Cable Disconnect/Connect Procedure (LY7) in Engine Electrical.
  5. Remove the ECM fuse in the underhood fuse block. Refer to Electrical Center Identification Views in Wiring Systems.
  6. Remove the transmission control module/instrument panel cluster (TCM/IPCM) fuse in the underhood fuse block. Refer to Electrical Center Identification Views in Wiring Systems.
  7. Remove the ECM/TCM fuse in the underhood fuse block. Refer to Electrical Center Identification Views in Wiring Systems.
  8. Unlock the body side (outboard) ECM electrical connector.
    1. Depress the ECM electrical connector lever lock (1).
    2. Simultaneously rotate the ECM connector clamp lever and depress the lock slide (2).
    Fig 1: ECM Electrical Connector Lever Lock & Lock Slide
    GM1285259Courtesy of GENERAL MOTORS CORP.
    9. NOTE: In order to prevent any possible electrostatic discharge damage to the ECM, do not touch the connector pins.
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.