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David H
David H, GM master certified
Category: Chevy
Satisfied Customers: 2669
Experience:  Cadillac Technician 18 years cadillac dealer.ase master certified.gm master certified
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How to remove oil pan 2003 6.0 liter suburban 4x4

Resolved Question:

how to remove oil pan 2003 6.0 liter suburban 4x4
Submitted: 3 years ago.
Category: Chevy
Expert:  David H replied 3 years ago.

First remove the front differential assembly and crossbar brace.Here are the full instructions.

 

Pan Replacement

Removal Procedure


    Object Number: 834241  Size: SH

  1. If equipped with four-wheel drive (4WD), remove the inner axle housing nuts and washers from the bracket.
  2. Support the front drive axle with a suitable jack.
    Object Number: 834278  Size: SH

  3. If equipped with 4WD, remove the differential carrier lower mounting bolt and nut.
    Object Number: 834276  Size: SH

  4. If equipped with 4WD, remove the differential carrier upper mounting bolt and nut.
  5. Lower the front drive axle.
    Object Number: 663487  Size: SH

  6. Remove the transmission cover bolt.
    Object Number: 309158  Size: SH

  7. If equipped, remove the oil pan skid plate bolts.
  8. Remove the oil pan skid plate.
    Object Number: 328107  Size: SH

  9. Remove the crossbar bolts.
  10. Remove the crossbar.
    Object Number: 832978  Size: SH

  11. Remove the transmission cover bolt and cover.
  12. Drain the engine oil and remove the engine oil filter.
  13. Re-install the drain plug and oil filter until snug.
    Object Number: 394448  Size: SH

  14. If equipped with the 4L60-E automatic transmission, remove the transmission bolt and stud on the right side.
    Object Number: 394446  Size: SH

  15. Remove the bottom bolt on the left side.
    Object Number: 396795  Size: SH

  16. If equipped with the 4L80-E automatic transmission, remove the transmission converter cover bolts.
    Object Number: 662991  Size: SH

  17. Disconnect the oil level sensor electrical connector (6).
    Object Number: 662508  Size: SH

  18. Remove the battery cable channel bolt.
  19. Slide the channel pin out of the oil pan tab.
    Object Number: 310672  Size: SH

  20. Remove the positive battery cable clip bolt.
    Object Number: 683355  Size: SH

  21. Remove the oil pan bolts.
  22. Remove the oil pan.
    Object Number: 384699  Size: SH

    Important: DO NOT allow foreign material to enter the oil passages of the oil pan, cap or cover the openings as required.

  23. Drill (3) out the oil pan gasket retaining rivets (2), if required.
  24. Remove the gasket (1) from the pan.
  25. Discard the gasket and rivets.

Installation Procedure

Important:

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.

 


    Object Number: 451897  Size: SH

  1. 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.
    Object Number: 451898  Size: SH

  2. 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.
    Object Number: 683355  Size: SH

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

  3. Pre-assemble the oil pan gasket to the pan.
    Install the gasket onto the pan.
    Install the oil pan bolts to the pan and through the gasket.
  4. Install the oil pan, gasket and bolts to the engine block.
  5. Tighten the oil pan bolts until snug. Do not overtighten.
    Object Number: 396795  Size: SH

  6. Install the transmission converter cover bolts until snug, if equipped with the 4L80-E automatic transmission.
    Object Number: 394448  Size: SH

  7. Install the transmission bolt and stud on the right side until snug, if equipped with the 4L60-E automatic transmission. Object Number: 394446  Size: SH

  8. Install the bottom bolt on the left side until snug.

    Tighten

    1. Tighten the oil pan-to-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 converter cover, and transmission bolts/stud to 50 N·m (37 lb ft).

    Object Number: 310672  Size: SH

  9. Install the positive battery cable clip bolt.

    Tighten
    Tighten the bolt to 9 N·m (80 lb in).


    Object Number: 662508  Size: SH

  10. Slide the channel pin in to the oil pan tab.
  11. Install the battery cable channel bolt.

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


    Object Number: 662991  Size: SH

  12. Connect the oil level sensor electrical connector (6).
    Object Number: 832978  Size: SH

  13. Install the transmission cover and bolt.

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


    Object Number: 328107  Size: SH

  14. Install the crossbar.
  15. Install the crossbar bolts.

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


    Object Number: 309158  Size: SH

  16. If equipped, install the oil pan skid plate.
  17. Install the oil pan skid plate bolts.

    Tighten
    Tighten the bolts to 20 N·m (15 lb ft).


    Object Number: 663487  Size: SH

  18. Install the transmission cover bolt.

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


    Object Number: 834276  Size: SH

  19. Raise the front drive axle into position.
  20. If equipped with 4WD, install the differential carrier upper mounting bolt and nut until snug. Do not tighten at this time.
    Object Number: 834278  Size: SH

  21. If equipped with 4WD, install the differential carrier lower mounting bolt and nut.

    Tighten
    Tighten the bolts to 100 N·m (75 lb ft).


    Object Number: 834241  Size: SH

  22. If equipped with 4WD, install the inner axle housing washers and nuts to the bracket.

    Tighten
    Tighten the nuts to 100 N·m (75 lb ft).

  23. Remove the jack from the front drive axle.
  24. Install new engine oil and a new oil filter.
David H, GM master certified
Category: Chevy
Satisfied Customers: 2669
Experience: Cadillac Technician 18 years cadillac dealer.ase master certified.gm master certified
David H and 6 other Chevy Specialists are ready to help you

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