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Installation Procedure

WARNING: This page is about a different car, the 2018 Chevrolet Suburban 3500 HD. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • The alignment of the structural oil pan is critical. The rear bolt hole locations of the oil pan provide mounting points for the transmission bellhousing. To ensure the rigidity of the powertrain and correct transmission alignment, it is important that the rear of the block and the rear of the oil pan must NEVER protrude beyond the engine block and transmission bellhousing plane.
  • Do not reuse the oil pan gasket.
  • It is not necessary to rivet the NEW gasket to the oil pan.
    Fig 1: Front Oil Pan-To-Engine Block Junction Sealant Application Area
    GM451897Courtesy of GENERAL MOTORS COMPANY
  1. If reusing the oil pan perform the following step, otherwise proceed to step 3.
    2. NOTE:

    Be sure to align the oil gallery passages in the oil pan and engine block properly with the oil pan gasket.

  2. Place a NEW oil pan gasket onto the oil pan.
  3. Apply a 5 mm (0.20 in) bead of sealant, 20 mm (0.80 in) long to the engine block. Apply the sealant directly onto the tabs of the front cover gasket that protrudes into the oil pan surface. Refer to Adhesives, Fluids, Lubricants, and Sealers .
    4. Fig 2: Rear Oil Pan-To-Engine Block Junction Sealant Application Area
    GM451898Courtesy of GENERAL MOTORS COMPANY
  4. Apply a 5 mm (0.20 in) bead of sealant, 20 mm (0.8 in) long to the engine block. Apply the sealant directly onto the tabs of the rear cover gasket that protrudes into the oil pan surface. Refer to Adhesives, Fluids, Lubricants, and Sealers .
    5. Fig 3: Oil Pan & Bolts
    GM683355Courtesy of GENERAL MOTORS COMPANY
  5. Install 1 oil pan bolt into a oil pan bolt hole and up through the gasket.
  6. Position and install the oil pan and the rest of the oil pan bolts.
  7. Tighten the oil pan bolts until snug.
    8. Fig 4: Lower Right Transmission Stud
    GM1698079Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

  8. Position the oil cooler bracket and install the lower right transmission stud until snug.
    9. Fig 5: Lower Left Transmission Bolt
    GM1698070Courtesy of GENERAL MOTORS COMPANY
  9. Install the lower left transmission bolt until snug.
    1. Tighten the oil pan and oil pan-to-oil pan front cover bolts to 25 N.m (18 lb ft).
    2. Tighten the oil pan-to-rear cover bolts to 12 N.m (106 lb in).
    3. Tighten the transmission bolts/stud to 50 N.m (37 lb ft).
    10. Fig 6: Engine Oil Cooler Hose Adapter, Bolts And Gasket
    GM3272948Courtesy of GENERAL MOTORS COMPANY
  10. Connect the oil cooler hose (2) to the oil pan. Refer to Engine Oil Cooler Hose Replacement .
    11. Fig 7: Electrical Connector, Bolt And Harness Retainer
    GM1697734Courtesy of GENERAL MOTORS COMPANY
  11. Position the channel and slide the channel pin (3) into the oil pan tab.
  12. Install the battery cable channel bolt (2) and tighten to 12 N.m (106 lb in).
  13. Install the engine harness clip (3) to the transmission oil cooler line bracket.
  14. Connect the electrical connector (1).
    15. Fig 8: Transmission Oil Cooler Line Clip And Bolt
    GM1698074Courtesy of GENERAL MOTORS COMPANY
  15. Position the transmission oil cooler line clip and install the bolt to the oil pan. Tighten the bolt to 9 N.m (80 lb in).
    16. Fig 9: Vehicle Crossbar, Bolts And Nuts
    GM1698282Courtesy of GENERAL MOTORS COMPANY
  16. Perform the following steps prior to installing the crossbar bolts.
    1. Remove all traces of the original adhesive patch.
    2. Clean the threads of the bolts with denatured alcohol or equivalent and allow to dry.
    3. Apply threadlock to the bolt threads. Refer to Adhesives, Fluids, Lubricants, and Sealers .
  17. Install the crossbar and crossbar bolts/nuts. Tighten the nuts to 120 N.m (89 lb ft).
    18. Fig 10: Left Side Transmission Cover Bolt
    GM1698086Courtesy of GENERAL MOTORS COMPANY
  18. Position the left side oil pan closeout cover and install the cover bolt. Tighten the bolt to 9 N.m (80 lb in).
    19. Fig 11: Right Side Transmission Cover Bolt
    GM1698084Courtesy of GENERAL MOTORS COMPANY
  19. Install the right side oil pan closeout cover bolt and tighten to 9 N.m (80 lb in).
  20. Install Starter. Refer to Starter Replacement (L96)
    21. Fig 12: Engine Oil Filter
    GM1658113Courtesy of GENERAL MOTORS COMPANY
  21. If reusing the old oil pan remove the old oil filter and install a NEW oil filter.
  22. Lubricate the NEW oil filter seal with clean engine oil.
  23. Install the NEW oil filter (437) and tighten to 30 N.m (22 lb ft).
  24. Ensure that the oil pan drain plug is tight. Tighten the drain plug to 25 N.m (18 lb ft).
  25. 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) .
    1. Tighten the left side steering rack bolts to 200 N.m (148 lb ft).
    2. Tighten the right side steering rack bolts to 100 N.m (74 lb ft).
    26. Fig 13: Oil Pan Skid Plate And Bolts
    GM1698083Courtesy of GENERAL MOTORS COMPANY
  26. Position the oil pan skid plate and tighten until snug the 2 rear oil pan skid plate bolts, install the 2 front oil pan skid plate bolts, if equipped. Tighten the bolts to 28 N.m (21 lb ft).
  27. Lower the vehicle.
  28. Install the oil level indicator tube. Refer to Oil Level Indicator Tube Replacement 
  29. Fill the engine with the proper capacity and quality of engine oil. Refer to Engine Oil and Oil Filter Replacement .
  30. Operate the engine, check for leaks, and oil pressure.
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