why not login in to mitchell DIY, (goggle it ) and read.
or go to any online, 4L30 parts house and read.
lots of those, can all found easy using "GOOGLE"
here.
search, (4L30 parts)
3rd hit MAKCO
see the graphic there, click it.
http://www.makcotransmissionparts.com/4L30E.html
you need to remove the TC, bolts first
the bell housings bolts to the engine,
those come off, with tranny jack in place.
all the steps are in the service manual.
4wd.
quote (a wall of text, why not buy the book?)
& Transfer Case Automatic Transmission Transmission Removal 4L30-E Transmission
4L30-E Transmission(removal
Print
4L30-E Transmission
Disengage the oxygen sensor connector from the transmission wiring harness connector
Disengage the oxygen sensor connector from the transmission wiring harness connector
Detach the selector lever end of the shift lock cable from the lever assembly by loosening the adjusting nuts and sliding the end out of the bracket
Detach the selector lever end of the shift lock cable from the lever assembly by loosening the adjusting nuts and sliding the end out of the bracket
Disconnect the shift control rod from the selector lever lower lever arm
Disconnect the shift control rod from the selector lever lower lever arm
Remove the oil pipe clamp bracket from the engine stiffener
Remove the oil pipe clamp bracket from the engine stiffener
Make certain to tighten the transmission-to-engine mounting bolts to the proper amount of torque-the torque measurements are shown in parentheses
Make certain to tighten the transmission-to-engine mounting bolts to the proper amount of torque-the torque measurements are shown in parentheses
NOTE
The transfer case is an integral part of the transmission housing. Although the 2 cases can be separated, the transfer case should be removed with the transmission.
Use a felt-tipped marker to matchmark the hood to the hood hinges. Remove the hood.
Disconnect the negative battery cable.
Shift the transmission into the N position, and the transfer case into the 2H position.
Remove the air cleaner assembly.
Remove the transfer case shift knob. Remove the 4 transmission cover console retaining screws.
Remove the center console assembly and disengage the console switch wiring connectors.
Disconnect the shift lock cable and the shift control rod from the selector lever assembly.
Unbolt and remove the transfer case control lever.
Raise and safely support the vehicle on jackstands.
Remove the transmission and transfer case skid plates.
Remove the exhaust pipe protectors.
Drain the transmission fluid. For more information servicing the transmission fluid pan and filter, refer to Section 1.
Label and detach the oxygen sensor connectors.
Remove the catalytic converter, center exhaust pipe and front exhaust pipe, as described in Section 3.
Matchmark the front and rear driveshafts to the differential and transfer case flanges.
Unbolt and remove the front and rear driveshafts, as described later in this section.
Disconnect the oil cooler lines from the transmission. Plug the lines to prevent fluid loss and contamination.
Remove the brackets securing the oil cooler lines to the engine stiffener.
Remove the front suspension crossmember.
Remove the dipstick and tube. Disconnect the breather hoses from the tube.
Remove the 5 engine stiffener bracket bolts and the stiffener bracket.
Remove the heat protector.
Disengage the transmission harness connectors and the mode switch harness connector from the engine harness.
Disconnect the harness clamp from the clamp bracket.
Disconnect the ground cable from the engine.
Remove the starter motor, as described in Section 2.
Remove the flexplate inspection cover.
Remove the 3 bolts securing the flexplate to the torque converter. Turn the crankshaft to gain access to all 3 bolts.
NOTE
Remove the radiator upper fan shroud and the cooling fan to access the crankshaft center bolt to turn the crankshaft.
Place a suitable transmission jack under the transmission and transfer case unit for support.
Raise the transmission slightly and remove the 8 bolts securing the rear mount and the transmission crossmember.
NOTE
Make sure the engine and transmission assembly is properly supported before removing the rear mount and third crossmember.
Raise the engine slightly with an engine hoist and remove the transmission-to-engine bolts.
Separate the transmission from the engine and lower the transmission from the vehicle.
end removal quote
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