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Home >> Cadillac >> 2013 >> Escalade Base, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 16 (Engine Mechanical - Hybrid (LZ1) - Repair Instructions - On Vehicle) >> Repair Instructions - On Vehicle >> Oil Pan Replacement (4WD) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different variant/trim than selected.
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: View Of Sealant Applied To Front Oil Pan-To-Engine Block Junction
    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: View Of Sealant Applied To Rear Oil Pan-To-Engine Block Junction
    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: View Of 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. CAUTION:

    Refer to Fastener Caution .

  7. Tighten the oil pan bolts.

    Tighten 

    • M6-Tighten the bolts to 12 N.m (106 lb in).
    • M8-Tighten the bolts to 25 N.m (18 lb ft).
    8. Fig 4: Identifying Lower Transmission Bolts
    GM1968780Courtesy of GENERAL MOTORS COMPANY
  8. Install the 2 lower transmission bolts (1) until snug.

    Tighten 

    Tighten the bolts to 50 N.m (37 lb ft).

    9. Fig 5: Identifying Air Conditioning (A/C) Compressor Bracket Bolts
    GM1968670Courtesy of GENERAL MOTORS COMPANY
  9. Install the air conditioning (A/C) compressor bracket bolts (1).

    Tighten 

    Tighten the bolt to 50 N.m (37 lb ft).

    10. Fig 6: Identifying Engine Harness Electrical Connector & Oil Level Sensor
    GM1968647Courtesy of GENERAL MOTORS COMPANY
  10. Connect the engine harness electrical connector (1) to the oil level sensor.
    11. Fig 7: View Of Vehicle Crossbar, Bolts & Nuts
    GM1698282Courtesy of GENERAL MOTORS COMPANY
  11. For both the 1500 and 2500 series, 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 GM P/N 12345493 (Canadian P/N 10953488) or equivalent to the bolt threads.
  12. For 2500 series vehicles, install the crossbar and crossbar bolts/nuts.

    Tighten 

    Tighten the nuts to 120 N.m (89 lb ft).

    13. Fig 8: View Of Vehicle Crossbar, Bolts & Nuts
    GM1698280Courtesy of GENERAL MOTORS COMPANY
  13. For 1500 series vehicles, install the crossbar and crossbar bolts/nuts.

    Tighten 

    Tighten the nuts to 100 N.m (74 lb ft).

    14. Fig 9: View Of Left Side Transmission Cover Bolt
    GM1698086Courtesy of GENERAL MOTORS COMPANY
  14. Position the left side transmission cover and install the cover bolt.

    Tighten 

    Tighten the bolt to 12 N.m (106 lb in).

    15. Fig 10: Flex Plate Inspection Cover & Bolt
    GM1970180Courtesy of GENERAL MOTORS COMPANY
  15. Install the right side transmission cover bolt (2).

    Tighten 

    Tighten the bolt to 12 N.m (106 lb in).

    16. Fig 11: View Of Engine Oil Filter
    GM1658113Courtesy of GENERAL MOTORS COMPANY
  16. If reusing the old oil pan remove the old oil filter and install a NEW oil filter.
  17. Lubricate the NEW oil filter seal with clean engine oil.
  18. Install the NEW oil filter (437).

    Tighten 

    Tighten the oil filter to 30 N.m (22 lb ft).

    19. Fig 12: View Of Oil Pan Drain Plug & Seal
    GM1658109Courtesy of GENERAL MOTORS COMPANY
  19. Install the oil pan drain plug (430).

    Tighten 

    Tighten the drain plug to 25 N.m (18 lb ft).

  20. Install the front differential carrier. Refer to Differential Carrier Assembly Replacement (9.25 Inch Axle) , Differential Carrier Assembly Replacement (8.25 Inch Axle) .
  21. Raise the steering rack in place and install the steering rack bolts.

    Tighten 

    • Tighten the left side steering rack bolts to 200 N.m (148 lb ft).
    • Tighten the right side steering rack bolts to 100 N.m (74 lb ft).
  22. Install the engine shield. Refer to Engine Shield Replacement .
    23. Fig 13: View Of Oil Pan Skid Plate & Bolts
    GM1698083Courtesy of GENERAL MOTORS COMPANY
  23. For 2500 series vehicles, 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 

    Tighten the bolts to 28 N.m (21 lb ft).

  24. For Hybrid (HP2) vehicles, Install the steering gear motor shield.
    25. Fig 14: View Of Oil Pan Skid Plate & Bolts
    GM1698082Courtesy of GENERAL MOTORS COMPANY
  25. For 1500 series vehicles, position the oil pan skid plate and install the oil pan skid plate bolts, if equipped.

    Tighten 

    Tighten the bolts to 28 N.m (21 lb ft).

  26. Lower the vehicle.
  27. Fill the engine with NEW engine oil. Refer to Fluid and Lubricant Recommendations , and Approximate Fluid Capacities .
  28. Start the engine and inspect for leaks.
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