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Home >> Chevrolet >> 2018 >> Suburban 3500 HD LT >> Repair and Diagnosis >> External Pages >> Different car >> Section 7 (Engine Mechanical - 5.3L (L83) Or 6.2L (L86) - Repair Instructions - On Vehicle) >> Repair Instructions - On Vehicle >> Oil Pan Replacement >> Installation Procedure

Installation Procedure

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  1. For oil pan assemble, refer to Oil Pan Assemble .
    2. Fig 1: RTV Sealant Application Areas
    GM3281841Courtesy of GENERAL MOTORS COMPANY
  2. Apply a 3 mm (0.118 in) bead of RTV sealant on the engine oil pan mating surface as shown (a). Apply a 5 mm (0.197 in) bead of RTV sealant on the engine front cover and rear oil seal housing as shown (b). Refer to Adhesives, Fluids, Lubricants, and Sealers .
    3. Fig 2: Oil Pan And Bolts
    GM3281805Courtesy of GENERAL MOTORS COMPANY
  3. Install the oil pan (3).
  4. Install the oil pan bolts (1, 2) and hand tighten.
    5. Fig 3: Tightening Oil Pan Bolts In Sequence
    GM3281843Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

  5. Tighten the oil pan bolts in sequence as shown above.
    1. Oil pan bolts to block and front cover (in sequence 1 - 13 and 16) 25 N.m (18 lb ft).
    2. Oil pan bolts to rear housing (in sequence 14 - 15) 12 N.m (106 lb in).
    6. Fig 4: Transmission To Oil Pan Bolts
    GM3281755Courtesy of GENERAL MOTORS COMPANY
  6. Reposition the cooler line bracket Install the 2 lower bolts securing the transmission to the engine. Refer to Transmission Replacement .
  7. Reposition the cooler line bracket and install the retaining nut. Tighten the nut to 10 N.m (89 lb in).
    8. Fig 5: Oil Cooler Bracket Fastener And Separate Oil Cooler Hoses
    GM3272938Courtesy of GENERAL MOTORS COMPANY
  8. position the oil cooler hoses and bracket assembly (2) to the oil pan and install the bracket fastener (1). Tighten the fastener to 9 N.m (80 lb in).
    9. Fig 6: View Of Right Flywheel Inspection Cover
    GM1705430Courtesy of GENERAL MOTORS COMPANY
  9. Install the right flywheel inspection cover and bolt. Refer to Transmission Replacement .
    10. Fig 7: View Of Left Flywheel Inspection Cover
    GM1708215Courtesy of GENERAL MOTORS COMPANY
  10. Install the left flywheel inspection cover and bolt. Refer to Transmission Replacement .
    11. Fig 8: Cooler Line Bracket Bolt, Electrical Connector And Engine Harness Retainers
    GM3281775Courtesy of GENERAL MOTORS COMPANY
  11. Install the cooler line bracket bolt (1) and tighten to 10 N.m (89 lb in).
  12. Connect electrical connector (2).
  13. Install the engine harness retainers (3).
    14. Fig 9: Engine Harness Retainers
    GM3281727Courtesy of GENERAL MOTORS COMPANY
  14. Install the engine harness retainers (1).
    15. Fig 10: Engine Harness Retainers
    GM3281891Courtesy of GENERAL MOTORS COMPANY
  15. Install the engine harness retainers (1).
  16. If equipped with 4WD, install the front axle. Refer to Front Axle Replacement (8.25 Inch LD Axle)Front Axle Replacement (9.25 Inch HD Axle) .
  17. Install the drivetrain and front suspension frame front crossmember. Refer to Drivetrain and Front Suspension Frame Front Crossmember Replacement .
  18. Install the starter. Refer to Starter Replacement (L83, L86) .
  19. Install the steering rack. Refer to Electric Belt Drive Rack and Pinion Steering Gear Replacement .
  20. Install the oil indicator tube. Refer to Oil Level Indicator Tube Replacement 
  21. Fill the engine with the proper capacity and quality of engine oil. Refer to Engine Oil and Oil Filter Replacement .
  22. Operate the engine, check for leaks, and oil pressure.
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