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Billy
Billy, Chevrolet tecnician
Category: Chevy
Satisfied Customers: 510
Experience:  Over 25 years experience,GM grand master for 8 years,certified smog and government safety inspector
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I need directions for replacing the oil pump on a 2001 Chevy

Customer Question

I need directions for replacing the oil pump on a 2001 Chevy 2500HD 6.0. Gas engine. Diagrams would be helpful. Thanks much.
Submitted: 4 years ago.
Category: Chevy
Expert:  Billy replied 4 years ago.
Hello and welcome to just answer,

Can you please be more specific about the model.

-is it a 2WD or 4WD?
-automatic or standard transmission?
-Is it a pick up, silverado, suburban etc..?

Best regards.
Billy
Customer: replied 4 years ago.
2WD, Automatic, Silverado, extended cab long bed.
Expert:  Billy replied 4 years ago.
Hello again,

First you will need to remove the oil pan. On a 2WD it should be easier than a 4WD.
The oil pan removal instructions are for all the C/K truck models, so you will need to ignore some of the steps. (for example removing the front differential etc..)
I will send the info in multiple posts, as it would be too large of a file all at once.


If you feel my answer was helpful, please click the ACCEPT button, otherwise I don't get reimbursed for my time. Feedback & Bonuses are always welcome.
Best regards,
Billy.

Oil 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.

  3. Object Number: 834278  Size: SH

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

  5. Object Number: 834276  Size: SH

  6. If equipped with 4WD, remove the differential carrier upper mounting bolt and nut.
  7. Lower the front drive axle.

  8. Object Number: 663487  Size: SH

  9. Remove the transmission cover bolts.

  10. Object Number: 309158  Size: SH

  11. If equipped, remove the oil pan skid plate bolts.
  12. Remove the oil pan skid plate.

  13. Object Number: 328107  Size: SH

  14. Remove the crossbar bolts.
  15. Remove the crossbar.

  16. Object Number: 178477  Size: SH

  17. Remove the transmission cover bolt and cover.
  18. Drain the engine oil and remove the engine oil filter.
  19. Re-install the drain plug and oil filter until snug.

  20. Object Number: 394448  Size: SH

  21. If equipped with the 4L60-E automatic transmission, remove the transmission bolt and stud on the right side.
Expert:  Billy replied 4 years ago.
    Object Number: 394446  Size: SH

  1. Remove the bottom bolt on the left side.

  2. Object Number: 396795  Size: SH

  3. If equipped with the 4L80-E automatic transmission, remove the transmission converter cover bolts.

  4. Object Number: 394442  Size: SH

  5. If equipped with a manual transmission, remove the two botXXXXX XXXXXhousing bolts.

  6. Object Number: 662991  Size: SH

  7. Disconnect the oil level sensor electrical connector (6).

  8. Object Number: 662508  Size: SH

  9. Remove the battery cable channel bolt.
  10. Slide the channel pin out of the oil pan tab.

  11. Object Number: 310672  Size: SH

  12. Remove the positive battery cable clip bolt and clip.

  13. Object Number: 683355  Size: SH

  14. Remove the oil pan bolts.
  15. Remove the oil pan.

  16. 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.

  17. Drill (3) out the oil pan gasket retaining rivets (2), if required.
  18. Remove the gasket (1) from the pan.
  19. Discard the gasket and rivets.
  20. Clean and inspect the engine oil pan.
Expert:  Billy replied 4 years ago.
Next step is the removal of the front cover.

Engine Front Cover Replacement

Tools Required

Front and Rear Cover Alignment (at crankshaft seal area)

Removal Procedure


    Object Number: 451709  Size: SH

  1. Remove the water pump.
  2. Remove the crankshaft balancer.
  3. Remove the oil pan-to-front cover bolts.

  4. Object Number: 64278  Size: SH

  5. Remove the front cover bolts.
  6. Remove the front cover and gasket.
  7. Discard the front cover gasket.
  8. Clean and inspect the engine front cover.
Expert:  Billy replied 4 years ago.
Then the oil pump,


If you feel my answer was helpful, please click the ACCEPT button, otherwise I don't get reimbursed for my time. Feedback & Bonuses are always welcome.
Best regards,
Billy.


Oil Pump, Screen, and Crankshaft Oil Deflector Replacement

Removal Procedure


    Object Number: 647800  Size: SH

  1. Remove the oil pan.
  2. Remove the engine front cover.
  3. Remove the oil pump screen bolt and nuts.
  4. Remove the oil pump screen with O-ring seal.
  5. Remove the O-ring seal from the pump screen.
  6. Discard the O-ring seal.

  7. Object Number: 683798  Size: SH

  8. Remove the remaining crankshaft oil deflector nuts.
  9. Remove the crankshaft oil deflector.

  10. Object Number: 64281  Size: SH

  11. Remove the oil pump bolts.
  12. Important: Do not allow dirt or debris to enter the oil pump assembly, cap end as necessary.

  13. Remove the oil pump.
  14. Clean and inspect the oil pump.
Expert:  Billy replied 4 years ago.
Hello again,

I hope the information I have provided worked for you.
If you have further questions don't hesitate to ask.

If you feel my answer was helpful, please click the ACCEPT button, otherwise I don't get reimbursed for my time. Feedback & Bonuses are always welcome.
Best regards,
Billy.
Customer: replied 4 years ago.
I rented an installation tool to reinstall the harmonic balancer. The screw with the kit isn't long enough for the job. Would you have any reccamendations for an installer tool? I'd really appreciate it. Thanks.
Expert:  Billy replied 4 years ago.
Hello again,

You will need to get the correct installer or try to find a long nut and bolt with the correct thread pitch and size and use it as an installer.

Installation Procedure

The used crankshaft balancer bolt will be used only during the first pass of the balancer installation procedure. Install a NEW bolt and tighten as described in the second, third and forth passes of the balancer bolt tightening procedure.
The crankshaft balancer installation and bolt tightening involves a four stage tightening process. The first pass ensures that the balancer is installed completely onto the crankshaft. The second, third, and forth passes tighten the new bolt to the proper torque.

Important: The balancer should be positioned onto the end of the crankshaft as straight as possible prior to tool installation.


    Object Number: 260154  Size: SH

  1. Install the crankshaft balancer onto the end of the crankshaft.

  2. Object Number: 63187  Size: SH

  3. Use the installer tool in order to install the crankshaft balancer.
  4. 2.1. Assemble the threaded rod, nut, washer and installer.

    Insert the smaller end of the installer into the front of the balancer.

    2.2. Use a wrench and hold the hex end of the threaded rod.
    2.3. Use a second wrench and rotate the installation tool nut clockwise until the balancer is started onto the crankshaft.
    2.4. Remove the tool and reverse the installation tool.

    Position the larger end of the installer against the front of the balancer.

    2.5. Use a wrench and hold the hex end of the threaded rod.
    2.6. Use a second wrench and rotate the installation tool nut clockwise until the balancer is installed onto the crankshaft.
    2.7. Remove the balancer installation tool.

    Object Number: 63245  Size: SH

  5. Install the used crankshaft balancer bolt.
  6. Tighten
    Tighten the USED crankshaft balancer bolt to 330 N·m (240 lb ft).

  7. Remove the used crankshaft balancer bolt.
  8. Important: The nose of the crankshaft should be recessed 2.4-4.48 mm (0.094-0.176 in) into the balancer bore.

  9. Measure for a correctly installed balancer.
  10. If the balancer is not installed to the proper dimensions, install the installation tool and repeat the installation procedure.

  11. Install a NEW crankshaft balancer bolt.
    1. Tighten the crankshaft balancer bolt a first pass to 50 N·m (37 lb ft).
    2. Tighten the crankshaft balancer bolt a second pass to 140 degrees
  12. Perform the crankshaft position (CKP) system variation learn procedure.

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Over 25 years experience,GM grand master for 8 years,certified smog and government safety inspector