How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Dave Nova Your Own Question

Dave Nova
Dave Nova, Chevrolet Technician
Category: Chevy
Satisfied Customers: 18805
Experience:  ASE Master Certification. GM World Class Certification
Type Your Chevy Question Here...
Dave Nova is online now
A new question is answered every 9 seconds

how to remove and re-install an allison 1000 transmission in

Resolved Question:

how to remove and re-install an allison 1000 transmission in a 04 lb7 duramax 3500 4wd
Submitted: 5 years ago.
Category: Chevy
Expert:  Dave Nova replied 5 years ago.
Transmission Replacement (With 6.6L Engine)

Tools Required

J 21366 Converter Holding Strap
J 44257 Connector Removal Tool

Removal Procedure

Important: If replacing a failed transmission, the "FastLearn" (adapt) procedure must be performed. This can be done in one step using a scan tool. If this procedure is not done, the transmission control module's (TCM's) adaptive values will still be at the settings that it learned for the old transmission, and will be in slow adaptive mode. Under these conditions, it would take an unacceptably long time for the adaptive values to converge to levels suitable for the new transmission.


    Object Number: 401885  Size: SH

  1. Disconnect both of the negative battery cables.
  2. Remove the transmission fluid level indicator.
  3. Raise the vehicle until the right front wheel and tire can be removed.
  4. Remove the right front wheel and tire.
  5. Remove the right front wheel house inner panel retainers (2).
  6. Disconnect any harness retainers attached to the inner panel.
  7. Remove the inner panel (1).
    Object Number: 674619  Size: SH
  8. Remove the positive battery cable nut and cable from the starter.
  9. Remove the solenoid nut and wire from the starter.
    Object Number: 660305  Size: SH

  10. Remove the starter motor bolts and reposition the starter.
    Object Number: 310119  Size: SH

  11. Remove the engine protection shield bolts and shield.
    Object Number: 702519  Size: SH

    Important: Rotate the engine clockwise ONLY, rotating the engine counterclockwise may loosen the crankshaft balancer bolt.

  12. Rotate the engine clockwise, using the crankshaft bolt in order to access the torque converter bolts thru the starter opening. Have an assistant rotate the engine while aligning the bolts.
  13. Remove the torque converter bolts.
  14. Completely raise the vehicle.
  15. Drain the transmission fluid.
    Object Number: 686691  Size: SH

  16. Disconnect the shift cable from the selector lever ball stud (5) and remove the cable from the bracket (3).
    Object Number: 686689  Size: SH

  17. Remove the shift cable bracket bolts and bracket (2) from the transmission.
  18. Reposition the bracket with the cable attached off to the side.
    Object Number: 702521  Size: SH

  19. Remove the fuel line retainer (1) bolts on the left side of the transmission.
    Object Number: 702523  Size: SH

  20. Remove the fuel line bracket nut from the converter housing stud.
    Object Number: 702774  Size: SH
  21. Disconnect the turbine speed sensor (1) and input speed sensor (2) electrical connectors.
  22. Disconnect the output speed sensor (3) electrical connector. If the vehicle is equipped withXXXXX(4WD), the output speed sensor is located on the transfer case and will be disconnected later.
    Object Number: 659284  Size: SH

  23. Disconnect the transmission main electrical connector. J 44257 may be used, but is not required.
    Object Number: 694239  Size: SH

  24. Disconnect the park/neutral position (PNP) switch electrical connector.
  25. Remove the exhaust hanger bolts and reposition the hanger.
  26. If the vehicle is aXXXXX(2WD), remove the propeller shaft. Object Number: 647997  Size: SH

  27. Support the transmission with a transmission jack.
  28. If the vehicle is a 2WD, remove the transmission mount nuts.
    Object Number: 652595  Size: SH

  29. If the vehicle is a 2WD, remove the transmission support bracket bolts.
  30. If the vehicle is a 2WD, remove the transmission support bolts and nuts.
    Object Number: 702771  Size: SH

  31. Remove the transmission mount bolts (1).
  32. Remove the transmission mount.
  33. If the vehicle is equipped with 4WD, remove the transfer case. Reposition any wiring harness branches out of the way.
    Object Number: 702527  Size: SH
  34. Secure a safety chain around the transmission. Use care not to overlap any wiring, fuel lines, or other related components.
    Object Number: 686709  Size: SH

  35. Disconnect the transmission oil cooler lines (1, 2) from the transmission.
  36. Plug the transmission oil cooler line fittings in the transmission case, if necessary.
  37. If the vehicle is equipped with a power take off (PTO) unit , disconnect and/or remove any necessary components to facilitate transmission removal.
    Object Number: 702776  Size: SH

  38. Remove the transmission fill tube nuts from the converter housing studs.
    Object Number: 702529  Size: SH

  39. Remove the wire harness/vent tube bracket nut from the converter housing stud and reposition the bracket.
    Object Number: 686685  Size: SH

  40. Remove the remaining converter housing bolts and studs.
  41. Separate the transmission from the engine.
    Object Number: 702530  Size: SH

  42. Carefully lower the transmission from the vehicle while simultaneously removing the fill tube.
Customer: replied 5 years ago.
I need the re-install instructions as well (including procedures and torque specs).
Expert:  Dave Nova replied 5 years ago.

Installation Procedure


    Object Number: 702530  Size: SH

  1. Install J 21366 to the converter housing in order to keep the torque converter from sliding off of the turbine shaft.
  2. Raise the transmission into place while simultaneously installing the transmission fill tube.
  3. Remove the J 21366 Object Number: 686685  Size: SH

    Important: Do not install the transmission by drawing it to the engine using the studs and bolts.

  4. Align the transmission with the engine using the alignment dowels located at the rear of the engine.

    Important: Ensure that the torque converter can be rotated before tightening the bolts and studs.

  5. Install the converter housing bolts and studs.

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


    Object Number: 702529  Size: SH

  6. Install the wire harness/vent tube bracket and nut to the converter housing stud.

    Tighten
    Tighten the nut to 18 N·m (13 lb ft).


    Object Number: 702776  Size: SH

  7. Install the transmission fill tube and nuts to the converter housing studs.

    Tighten
    Tighten the nuts to 18 N·m (13 lb ft).

  8. If the vehicle is equipped with a PTO unit, connect and/or install the components at this time.
    Object Number: 702527  Size: SH

  9. Remove the safety chain from around the transmission.
  10. Install the transfer case, if the vehicle is equipped with 4WD.
    Object Number: 702771  Size: SH

  11. If the vehicle is a 2WD, install the transmission mount.
  12. If the vehicle is a 2WD, install the transmission mount bolts (1).

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


    Object Number: 652595  Size: SH

  13. Install the transmission support.
  14. If the vehicle is a 2WD, install the transmission support bolts and nuts.
  15. If the vehicle is a 2WD, install the transmission support bracket bolts.

    Tighten
    Tighten the bolts/nuts to 95 N·m (70 lb ft).


    Object Number: 647997  Size: SH

  16. If the vehicle is a 2WD, install the transmission mount nuts.

    Tighten
    Tighten the nuts to 40 N·m (30 lb ft).

  17. Remove the transmission jack.
  18. If the vehicle is a 2WD, install the propeller shaft. Object Number: 694239  Size: SH

  19. Position the exhaust hanger and install the bolts.

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

  20. Position the wiring harness branches.
  21. Connect the PNP switch electrical connectors.
    Object Number: 702524  Size: SH

  22. Connect the transmission main electrical connector (2).
    Object Number: 702774  Size: SH

  23. Connect the output speed sensor (3) electrical connector. If the vehicle is equipped with 4WD, the output speed sensor is located on the transfer case and has been connected during the transfer case installation.
  24. Connect the turbine speed sensor (1) and the input speed sensor (2) electrical connectors.
    Object Number: 702523  Size: SH

  25. Install the fuel line bracket and nut to the transmission converter housing stud.

    Tighten
    Tighten the nut to 18 N·m (13 lb ft).


    Object Number: 702521  Size: SH

  26. Install the fuel line retainer (1) and bolts to the left side of the transmission.

    Tighten
    Tighten the bolts to 2.5 N·m (22 lb in).


    Object Number: 686689  Size: SH

  27. Install the shift cable bracket (2) and bolts to the transmission.

    Tighten
    Tighten the bolts to 25 N·m (18 lb ft).


    Object Number: 686691  Size: SH

  28. Install the shift cable to the bracket (3) and the selector lever ball stud (5).
    Object Number: 713136  Size: SH

  29. Remove the access hole cover (1) on the converter housing in order to rotate the converter and align the first torque converter bolt.
    Object Number: 702519  Size: SH

  30. If reusing the torque converter bolts, clean the bolt threads and apply Loctite 242 GM P/N 12345382 (Canadian P/N 10953489), or equivalent to the threads prior to installation.
  31. Install the torque converter bolts.

    Tighten
    Tighten the bolts to 60 N·m (44 lb ft).

  32. Install the converter housing access hole cover.
    Object Number: 310119  Size: SH

  33. Install the engine protection shield and bolts.

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


    Object Number: 660305  Size: SH

  34. Position and install the starter motor bolts.

    Tighten
    Tighten the bolts to 78 N·m (58 lb ft).


    Object Number: 674619  Size: SH

  35. Install the solenoid wire and nut to the starter.

    Tighten
    Tighten the nut to 3.4 N·m (30 lb in).

  36. Install the positive battery cable and nut to the starter.

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


    Object Number: 401885  Size: SH

  37. Install the inner panel (1).
  38. Connect any harness retainers to the inner panel.
  39. Install the right front wheel house inner panel retainers (2).
  40. Install the right front wheel and tire.
    Object Number: 686709  Size: SH
  41. Remove the plugs from the transmission oil cooler line fittings in the transmission case, if necessary.
  42. Flush the transmission oil cooler and lines, if necessary. Connect the transmission oil cooler lines (1, 2) to the transmission.
  43. Lower the vehicle.
  44. Connect both negative battery cables. Fill the transmission with new transmission fluid.
  45. Install the transmission fluid level indicator.
  46. If a replacement transmission was installed, perform the "FastLearn" procedure using a scan tool.
Dave Nova, Chevrolet Technician
Category: Chevy
Satisfied Customers: 18805
Experience: ASE Master Certification. GM World Class Certification
Dave Nova and 11 other Chevy Specialists are ready to help you

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • I was having a terrible problem with the wheel bearings on my 98 Chevy Cavalier and I suspect that using this website saved me plenty of time and money. Todd L Rochester NY
< Last | Next >
  • I was having a terrible problem with the wheel bearings on my 98 Chevy Cavalier and I suspect that using this website saved me plenty of time and money. Todd L Rochester NY
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
  • Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Robin Elkton, Maryland
 
 
 

Meet The Experts:

 
 
 
  • Tim's Auto Repair

    mechanic

    Satisfied Customers:

    7641
    Have owned a repair shop for 25 yrs.
< Last | Next >
  • http://ww2.justanswer.com/uploads/TI/tim37857/2011-10-28_23053_S6301814.64x64.JPG Tim's Auto Repair's Avatar

    Tim's Auto Repair

    mechanic

    Satisfied Customers:

    7641
    Have owned a repair shop for 25 yrs.
  • http://ww2.justanswer.com/uploads/DT/dt69nova/2012-6-15_234154_pic1.64x64.jpg Dave Nova's Avatar

    Dave Nova

    Chevrolet Technician

    Satisfied Customers:

    6870
    ASE Master Certification. GM World Class Certification
  • http://ww2.justanswer.com/uploads/ggrote1/2009-06-27_031011_me.jpg Gary's Avatar

    Gary

    Chevy Technician

    Satisfied Customers:

    5404
    15 years GM master tech
  • http://ww2.justanswer.com/uploads/testedtuff/2009-09-26_170108_pictures.jpg John's Avatar

    John

    Master A.S.E Automotive technician

    Satisfied Customers:

    4071
    A.S.E MasterTechnician A1-A8 w/L1,38 years experience General Motors Master Technician
  • http://ww2.justanswer.com/uploads/RO/rodcuda/2011-7-25_224114_Donhoff1.64x64.JPG Neal's Avatar

    Neal

    Chevy Mechanic

    Satisfied Customers:

    2306
    Shop Owner and Mechanic on multiple makes.
  • http://ww2.justanswer.com/uploads/goodwrench9124/2008-11-09_220838_dscf0007.jpg goodwrench9124's Avatar

    goodwrench9124

    ASE Certified Technician

    Satisfied Customers:

    2041
    Ase Master Certified, GM Master Certified Tech. Awarded GM Top performer, Hybrid certified
  • http://ww2.justanswer.com/uploads/DR/drivefast1971/2012-1-12_172422_0009051tQKh.64x64.jpg Ron Z.'s Avatar

    Ron Z.

    - Chevy Tech -

    Satisfied Customers:

    1912
    18+yrs experience. State Inspector and Chevy Diagnostics