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Home >> GMC >> 2002 >> Yukon Denali >> Repair and Diagnosis >> External Pages >> Different car >> Section 324 (Engine Mechanical - 3.1L V6 - VIN (J) (On-Vehicle)) >> Repair Instructions >> Engine Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the negative battery cable.
  2. Drain the cooling system. Refer to DRAINING AND FILLING COOLING SYSTEM in ENGINE COOLING SYSTEM .
  3. Drain the engine oil. Refer to Engine Oil and Oil Filter Replacement .
  4. Remove the air cleaner assembly. Refer to AIR CLEANER ASSEMBLY REPLACEMENT in ENGINE CONTROLS - REMOVAL & INSTALLATION, OVERHAUL .
  5. Remove the hood. Refer to HOOD REPLACEMENT in BODY FRONT END .
  6. Remove the engine mount struts. Refer to Engine Mount Strut Replacement .
    Fig 1: Engine Mount Struts
    G01763668Courtesy of GENERAL MOTORS CORP.
  7. Remove the drive belt. Refer to Drive Belt Replacement .
  8. Disconnect the following electrical connectors:
    • Knock sensor
    • Camshaft Position (CMP) sensor
    • Crankshaft Position (CKP) sensor
    • Heated Oxygen (HO2) sensor
    • Manifold Absolute Pressure (MAP) sensor
    • Exhaust Gas Recirculation (EGR) valve
    • Evaporative emissions (EVAP) canister purge solenoid
    • Throttle Position (T/P) sensor
    • Idle Air Control (IAC) valve
    • Ignition coil
    • Body wiring harness-to-engine harness
  9. Raise and support the vehicle.
  10. Remove the 3-way catalytic converter pipe from the right exhaust manifold. Refer to CATALYTIC CONVERTER REPLACEMENT (3.1L) in AUTOMATIC TRANSAXLE SERVICING .
  11. Remove the engine wiring harness grounds from the transaxle.
  12. Remove the engine mount lower nuts.
  13. Remove the torque converter covers. Refer to TORQUE CONVERTER COVER REPLACEMENT in AUTOMATIC TRANSAXLE SERVICING .
  14. Remove the starter motor. Refer to STARTER .
  15. Remove the A/C compressor. DO NOT discharge the A/C system. Support the compressor. Refer to COMPRESSOR .
  16. Remove the torque converter bolts. Refer to FLYWHEEL TO TORQUE CONVERTER BOLT REPLACEMENT in AUTOMATIC TRANSAXLE SERVICING .
  17. Remove the transaxle brace. Refer to AUTOMATIC TRANSMISSION BRACE REPLACEMENT in AUTOMATIC TRANSAXLE SERVICING .
  18. Remove the lower transaxle-to-engine bolt (6) and stud (1).
    Fig 2: Lower Transaxle-To-Engine
    G01763669Courtesy of GENERAL MOTORS CORP.
  19. Remove the radiator outlet hose from the engine. Refer to RADIATOR HOSE REPLACEMENT - OUTLET (3.1L) in ENGINE COOLING SYSTEM .
  20. Lower the vehicle and support the transaxle.
  21. Remove the accelerator control and the cruise control cable with the bracket from the throttle body. Refer to ACCELERATOR CONTROLS CABLE BRACKET REPLACEMENT in ENGINE CONTROLS - REMOVAL & INSTALLATION, OVERHAUL .
  22. Remove the heater outlet and inlet hoses from the engine.
  23. Remove the vacuum hoses from the upper intake manifold.
  24. Remove the brake booster vacuum hose from the upper intake manifold.
  25. Remove the fuel lines from the fuel rail. Refer to QUICK CONNECT FITTING(S) SERVICE (METAL COLLAR) and QUICK CONNECT FITTING(S) SERVICE (PLASTIC COLLAR) in ENGINE CONTROLS - REMOVAL & INSTALLATION, OVERHAUL .
  26. Remove the radiator inlet hose from the engine. Refer to RADIATOR HOSE REPLACEMENT - INLET (3.1L) in ENGINE COOLING SYSTEM .
  27. Remove the power steering pump and reposition. Refer to POWER STEERING PUMP REPLACEMENT (3.1L) .
  28. Install the engine lifting device to the engine.
  29. Remove the upper transaxle-to-engine bolts (3,4,5) and stud (2). See Fig 2.
  30. Remove the engine from the vehicle.
  31. Remove the flywheel. Refer to Engine Flywheel Replacement .
  32. Install the engine to the engine stand.
  33. Remove the generator and the generator bracket. Refer to GENERATOR .
  34. Remove the engine mount bracket. Refer to Engine Mount Strut Replacement .
  35. Remove the drive belt tensioner. Refer to Drive Belt Tensioner Replacement .
  36. Remove the ignition control module. Refer to IGNITION COILS .
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