LEMON Manuals: Even more car manuals for everyone
Home >> Cadillac >> 2007 >> CTS Base, 2.8 T, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 2.8L - Introduction (2 Of 2) >> Repair Instructions >> Engine Control Module Replacement >> Removal Procedure

Removal Procedure

  1. Using a scan tool, retrieve the percentage of remaining engine oil and the remaining automatic transmission fluid life. Record the remaining engine oil and the remaining automatic transmission fluid life.
    2. Fig 1: ECM Electrical Connector Lever Lock & Lock Slide
    GM1285259Courtesy of GENERAL MOTORS CORP.
  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 .
  4. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection .
  5. Remove the ECM fuse in the underhood fuse block. Refer to Electrical Center Identification Views .
  6. Remove the TCM/instument panel cluster (IPC) fuse in the underhood fuse block. Refer to Electrical Center Identification Views .
  7. Remove the ECM/TCM fuse in the underhood fuse block. Refer to Electrical Center Identification Views .
  8. Unlock the chassis side (upper) 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).
    9. NOTE: In order to prevent any possible electrostatic discharge damage to the ECM, do not touch the connector pins.
    Fig 2: View Of Upper ECM Connector
    GM1343429Courtesy of GENERAL MOTORS CORP.
  9. Remove the body side (upper) ECM connector.
    10. Fig 3: View Of ECM Wiring Harness Connector
    GM945720Courtesy of GENERAL MOTORS CORP.
  10. Unlock and remove the engine side (lower) ECM connector.
    11. Fig 4: View Of ECM Redundant Ground Wire Bolt
    GM1343434Courtesy of GENERAL MOTORS CORP.
  11. Remove the ECM redundant ground wire and bolt (2) from the ECM.
    12. Fig 5: View Of ECM
    GM887860Courtesy of GENERAL MOTORS CORP.
  12. Remove the ECM bolts.
  13. Remove the ECM.
  14. If replacing the ECM bracket, perform the following steps:
    15. Fig 6: View Of Engine Wiring Harness Bracket Bolt - Top Of ECM Bracket
    GM945521Courtesy of GENERAL MOTORS CORP.
  15. Remove the electrical connector bracket bolt and bracket from the ECM bracket.
    16. Fig 7: View Of ECM Redundant Ground Wire Bolt
    GM1343434Courtesy of GENERAL MOTORS CORP.
  16. Remove the ground wire bolt (1) and wire from the ECM bracket.
    17. Fig 8: View Of Engine Wiring Harness Bracket Bolt - Side Of ECM Bracket
    GM945513Courtesy of GENERAL MOTORS CORP.
  17. Remove the wire harness retainer bolt and retainer from the side of the ECM bracket.
    18. Fig 9: View Of ECM Bracket
    GM887861Courtesy of GENERAL MOTORS CORP.
  18. Remove the ECM bracket bolts (2 and 3).
  19. Remove the ECM bracket (1).
scientia non olet · About LEMON Manuals