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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1496 (Engine Mechanical - 5.3L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Oil Pan Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 GMC Envoy XL and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the negative battery cable. Refer to BATTERY NEGATIVE CABLE DISCONNECT/CONNECT PROCEDURE  in Engine Electrical.
  2. Remove the oil level indicator tube. Refer to OIL LEVEL INDICATOR AND TUBE REPLACEMENT   .
  3. Remove the front shock upper retaining nuts.
    Fig 1: Removing Front Shock Upper Retaining Nuts
    G02129212Courtesy of GENERAL MOTORS CORP.
  4. Remove the tires and wheels. Refer to LIFTING AND JACKING THE VEHICLE in General Information.
  5. Remove the engine shield bolts and shield.
  6. Drain the engine oil.
  7. Drain the differential oil.
  8. Remove the steering gear. Refer to POWER STEERING GEAR REPLACEMENT  in Power Steering System.
    Fig 2: Removing Engine Shield Bolts And Shield
    G02129213Courtesy of GENERAL MOTORS CORP.
  9. Remove the left and right antilock brake system (ABS) wiring harnesses from the retainers.
    Fig 3: Removing Left And Right Antilock Brake System Wiring Harnesses From Retainers
    G02129214Courtesy of GENERAL MOTORS CORP.
  10. Disconnect the wheel speed sensor electrical connectors.
    Fig 4: Disconnecting Wheel Speed Sensor Electrical Connectors
    G02129215Courtesy of GENERAL MOTORS CORP.
  11. Remove the brake hose retaining bolts from the frame.
    Fig 5: Removing Brake Hose Retaining Bolts From Frame
    G02129216Courtesy of GENERAL MOTORS CORP.
  12. Disconnect the sway bar link pins from the lower control arm on both sides.
    Fig 6: Disconnecting Sway Bar Link Pins From Lower Control Arm On Both Sides
    G02129217Courtesy of GENERAL MOTORS CORP.
  13. Place an adjustable jack stand under the lower control arm.
  14. Remove the upper ball joint pinch bolt and nut.
  15. Disconnect the upper control arm from the upper ball joint.
  16. Lower and remove the adjustable jack stand allowing the suspension to hang.
  17. Remove the left wheel driveshaft. Refer to AXLE SHAFTS .
  18. Remove the right wheel driveshaft from the intermediate shaft bearing assembly only. It is not necessary to remove the drive shaft from the steering knuckle. Refer to AXLE SHAFTS . Position the drive shaft to the side out of the way.
    Fig 7: Removing Right Wheel Driveshaft From Intermediate Shaft Bearing Assembly
    G02129218Courtesy of GENERAL MOTORS CORP.
  19. Using mechanic's wire or metal hooks, secure the front shock modules to the frame. DO NOT let the shock modules and steering knuckle hang without supporting them.
  20. Reference mark the relationship of the propeller shaft to the front axle pinion yoke.
  21. Remove the yoke retainer bolts and yoke retainers from the front axle pinion yoke.
  22. Disconnect the propeller shaft from the front axle pinion yoke.

    Wrap the bearing caps with tape in order to prevent the loss or the bearing rollers.

    Secure the propeller shaft to the frame.

    Fig 8: Removing Yoke Retainer Bolts And Yoke Retainers From Front Axle Pinion Yoke
    G02129219Courtesy of GENERAL MOTORS CORP.
  23. Remove the transmission oil cooler lines from the retainer.
    Fig 9: Removing Transmission Oil Cooler Lines From Retainer
    G02129220Courtesy of GENERAL MOTORS CORP.
  24. Remove the transmission oil cooler line retaining bracket bolt and bracket.
  25. Remove the inner axle shaft. Refer to INNER AXLE SHAFT REPLACEMENT - FRONT DRIVE AXLE  in Front Drive Axle.
  26. Remove the starter. Refer to STARTING SYSTEM  in Engine Electrical.
  27. Remove the Flywheel inspection cover from the left side of the transmission.
    Fig 10: Removing Transmission Oil Cooler Line Retaining Bracket Bolt And Bracket
    G02129221Courtesy of GENERAL MOTORS CORP.
  28. Remove the battery cable channel bolt from the front of the oil pan.
  29. Remove the battery cable channel from the oil pan.
  30. Loosen the 2 upper air conditioning (A/C) compressor bracket bolts.
  31. Remove the 2 lower A/C compressor bracket bolts.
    Fig 11: Removing Lower A/C Compressor Bracket Bolts
    G02129222Courtesy of GENERAL MOTORS CORP.
  32. Remove the front differential attachment bolts.
  33. Secure the front differential to the frame.
    Fig 12: Removing Front Differential Attachment Bolts
    G02129223Courtesy of GENERAL MOTORS CORP.
  34. Remove the 2 lower bellhousing bolts.
    Fig 13: Removing Bellhousing Bolts
    G02129224Courtesy of GENERAL MOTORS CORP.
  35. Remove the oil pan bolts.
  36. Remove the oil pan by tilting the rear of the oil pan down to clear the transmission, pull the oil pan rearward past the front wire harness, then lower the oil pan clear of the vehicle.
    Fig 14: Removing Oil Pan Bolts
    G02129225Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: The oil pan gasket is reusable. It is NOT necessary to remove the oil pan gasket unless damaged.
    IMPORTANT: DO NOT allow foreign material to enter the oil passages of the oil pan, cap or cover the openings as required.
  37. Drill out the oil pan gasket retaining rivets (2), if required.
  38. Remove the gasket (1) from the pan.
  39. Discard the gasket and rivets.
  40. Clean and inspect the oil pan. Refer to OIL PAN CLEANING AND INSPECTION   .
    Fig 15: Drilling Out Oil Pan Gasket Retaining Rivets
    G02129226Courtesy of GENERAL MOTORS CORP.
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