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Bolt size for transmission to transfer case np241c 4l60e transmission

Needing the size for the transfer case to transmission bolts

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Posted on Jan 02, 2017

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SOURCE: transfer case bolts keep backing out 98 k1500

try using medium strength lock tight. clean threaded holes first with a tap to clean them up and blow out. then use the lock tight. if still have problems trying tapping up one bolt size. and use lock tight

Posted on Apr 23, 2010

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perkins48
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SOURCE: Need bolt torque specs for transfer case. NP241C

Great.

Posted on Oct 26, 2012

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I dont know what kind of transfer case to look for, i dont know what modle my transmission is and transfer case is, i have a 2002 chevrolet silverado 1500HD please getback to me asap !!!!


The transfer case has a label on it with all the info

Trans is should be a 4L60E ,you got the year & can count
the pan bolts & see the pattern

Don't be swapping parts with other peoples junk

If you have trans or transfer problems, keep yours &
fix them.

No such thing as good used parts

Jul 27, 2011 | 2002 Chevrolet Silverado 1500HD

1 Answer

How to remove a transmission for a 2002 GMC Yukon


Removal & Installation 4L60E/4L65E To Remove:
  1. Remove or disconnect the following:
    • Transmission fluid
    • Transmission oil level indicator tube and seal from the transmission
    • Plug the oil level indicator tube opening in the transmission.
    • Remove or disconnect the following:
    • Shift cable end from the transmission shift lever ball stud
    • If equipped with a transfer case, remove the front propeller shaft.
    • Rear propeller shaft.
  2. Plug the transmission oil cooler line connectors in the transmission case.
  3. Remove or disconnect the following:
    • Starter motor.
    • Transfer case, if equipped.
  4. Support the transmission with a transmission jack.
  5. Remove the transmission mount nuts.
  6. Remove the transmission crossmember.
  7. Remove or disconnect the following:
    • Torque converter access plug 4L60E/4L65E removal 9308kg37.gif

    • Flywheel to torque converter bolts
    • The two bolts securing the transmission rear mount to the transmission
    • The transmission vent hose, fuel lines, and the wiring harness from the transmission
    • The stud and the bolt securing the transmission to the engine
    • The six studs and one bolt securing the transmission to the engine. Install tool J21366 onto the transmission bell housing to retain the torque converter. Pull the transmission straight back.
    • The transmission from the vehicle
  8. Flush the transmission oil cooler and cooling lines when you remove the transmission.
To Install:
  1. Install or connect the following:
    • Tool J21366 onto the transmission bell housing to retain the torque converter.
    • Support the transmission with a transmission jack.
  2. Raise the transmission into place and remove the tool from the transmission.
  3. Slide the transmission straight onto the locating pins while lining up the marks on the flywheel and the torque converter. The torque converter must be flush onto the flywheel and rotate freely by hand.
  4. Install or connect the following:
    • Six studs and one bolt securing the transmission to the engine. Tighten the studs and the bolt to 50 Nm (37 ft. lbs.).
    • Stud and bolt securing the transmission to the engine. Tighten the stud and the bolt to 50 Nm (37 ft. lbs.).
    • Flywheel to torque converter bolts. Tighten the stud and the bolt to 46 Nm (63 ft. lbs.).
    • Torque converter access plug.
    • Transmission vent hose, fuel lines, and the wiring harness to the transmission.
    • Two bolts securing the heat shield to the transmission. Tighten the bolt to 17 Nm (13 ft. lbs.).
    • Two bolts securing the transmission rear mount to the transmission. Tighten the bolts to 18 ft. lbs. (25 Nm).
    • Install the transmission crossmember. Tighten the nuts and bolts to 70 ft. lbs. (95 Nm).
  5. Remove the transmission jack from the transmission.
  6. Unplug the transmission oil cooler line connectors in the transmission case.
  7. Install or connect the following:
    • Starter
    • Transmission oil cooler lines to the transmission
    • If equipped with a transfer case, install the front propeller shaft.
    • The rear propeller shaft
    • The shift cable end to the transmission shift lever ball stud
  8. Unplug the oil level indicator tube opening in the transmission.
  9. Install the transmission oil level indicator tube and seal to the transmission.
  10. Tighten the oil pan bolts and fill the transmission with transmission fluid.
  11. Lower the vehicle.
4L80E/4L85E To Remove:
  1. Remove or disconnect the following:
    • Transmission fluid
    • Transmission oil level indicator tube and seal from the transmission
  2. Plug the oil level indicator tube opening in the transmission.
  3. Remove or disconnect the following:
    • Shift cable from the transmission shift lever ball stud
    • If 4WD vehicle, remove the propeller shaft.
    • If RWD vehicle, remove the propeller shaft.
    • The transmission oil cooler lines from the transmission
  4. Plug the transmission oil cooler line connectors in the transmission case.
  5. Remove or disconnect the following:
    • Starter motor
  6. Support the transmission with a transmission jack.
  7. Remove or disconnect the following:
    • The two bolts securing the heat shield to the transmission
    • The transmission vent hose, fuel lines, and the wiring harness from the transmission
    • One nut and one bolt securing the transmission brace to the engine bracket and transmission
    • The two bolts securing the torque converter cover to the engine
    • The four bolts securing the torque converter cover to the transmission
    • The six flywheel to torque converter bolts
    • The two bolts and nut securing the transmission rear mount to the transmission
    • The stud and the bolt on the right side securing the transmission to the engine
    • The remaining six studs and the one bolt securing the transmission to the engine
    • Tool J21366 onto the transmission bell housing to retain the torque converter
    4L80E/4L85E removal 9308kg36.gif

  8. Pull the transmission straight back. Remove the transmission from the vehicle.
  9. Flush the transmission oil cooler and cooling lines when you remove the transmission.
To Install:
  1. Install or connect the following:
    • Tool J21366 onto the transmission bell housing to retain the torque converter
  2. Support the transmission with a transmission jack.
  3. Raise the transmission into place and remove the tool from the transmission.
  4. Slide the transmission straight onto the locating pins while lining up the marks on the flywheel and the torque converter. The torque converter must be flush onto the flywheel and rotate freely by hand.
  5. Install or connect the following:
    • Six studs and one bolt securing the transmission to the engine. Tighten the studs and the bolt to 50 Nm (37 ft. lbs.).
    • The stud and bolt on the right side securing the transmission to the engine. Tighten the stud and the bolt to 50 Nm (37 ft. lbs.).
    • Six flywheel to torque converter bolts. Tighten the bolts to 60 Nm (44 ft. lbs.).
    • The two bolts securing the torque converter cover to the engine. Tighten the bolt to 50 Nm (37 ft. lbs.).
    • The four bolts securing the torque converter cover to the transmission. Tighten the stud and the bolt to 33 Nm (24 ft. lbs.).
    • The transmission vent hose, fuel lines, and the wiring harness to the transmission.
    • The two bolts securing the heat shield to the transmission. Tighten the bolt to 17 Nm (13 ft. lbs.).
    • The two bolts and nut securing the transmission rear mount to the transmission. Tighten the bolts and nut to 25 Nm (18 ft. lbs.).
    • The flywheel to torque converter bolts.
    • One nut and one bolt securing the transmission brace to the engine bracket and transmission. Tighten the bolts and nut to 50 Nm (37 ft. lbs.).
  6. Remove the transmission jack from the transmission.
  7. Install or connect the following:
    • Starter motor
  8. Unplug the transmission oil cooler line connectors in the transmission case.
  9. Connect the transmission oil cooler lines to the transmission.
  10. Install or connect the following:
    • The transfer case
    • The rear propeller shaft
    • The shift cable end to the transmission shift lever ball stud
  11. Unplug the oil level indicator tube opening in the transmission.
  12. Install the transmission oil level indicator tube and seal to the transmission.
  13. Tighten the oil pan bolts and fill the transmission with transmission fluid.
  14. Lower the vehicle.
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Oct 12, 2010 | 2002 GMC Yukon XL

1 Answer

4l60e transmission


Provided that your truck is 2WD and not 4WD, it looks like it will work. Check the length of both and make sure they match, the 2WD is longer than the one in the 4WD's and it dosent look like they can be interchanged without tearig into the casing and swapping parts.

Also check the bolt patterns on both, as some earlier versions of that transmission are 4 bolt instead of 6 bolt.

As far as the flywheel goes, you'll probably be ok with yours, I really cant answer that unfortunately.

Apr 27, 2010 | 1998 Chevrolet C1500

1 Answer

Transfer case bolts keep backing out 98 k1500 np243c are there supposed to be lock washer on them (bolts that connect adapter to transfer case) NP 243c to 4l60e and is there suposed to be fluid in that...


try using medium strength lock tight. clean threaded holes first with a tap to clean them up and blow out. then use the lock tight. if still have problems trying tapping up one bolt size. and use lock tight

Apr 21, 2010 | 1999 Chevrolet Silverado 1500

1 Answer

Bolt to check transfer case fluid level


18 mm or 3/8 drv rachet dex III fluid or gm manual transmission fluid don't use dex VI

Aug 29, 2009 | 2007 Chevrolet Tahoe

1 Answer

Need to put a new tranny in my suburban,95' 2 wheel drive


Your suburban should have a 4L60E transmission if it a 1/2 ton C1500. Mine is a 4 wheel drive, but it is the same transmission except for the tail shaft to accomodate the transfer case. The 3/4 ton trucks came with a 4L80E.

Jan 28, 2009 | 1995 GMC Suburban

4 Answers

What transmission interchanges with a 98 4z`x4 Blazer


sorry but your stuck with the 4l60e if you want it to be right. as for using the bravada transmission thats fine you just have to use your transfer case. your transfer case uses a switch on the dash and an electric motor on the transfer case. the bravada uses a series of sensors on the front and rear axle that sense wheel slippage and send a signal to the electric motor on the transfer case causing it to lock in four wheel drive. when the sensors dont sense wheel slippage any more the system returns to two wheel drive. that,s why they call it smart track. just unbolt your transfer case from your transmission and bolt it to the bravada transmission and install it. p.s- dont forget to at least change the front pump converter seal. for 4 or 5 bucks it,s cheap insurance against a major leak and i dont think you want to pull that transmission out again and yes i saw that happen to many times. good luck.-G.J.M

Jan 04, 2009 | 1998 Chevrolet Blazer

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