Transmission removal

Tiny
KEITH ROBINSON2
  • MEMBER
  • 2003 CADILLAC DEVILLE
  • 4.6L
  • V8
  • 2WD
  • AUTOMATIC
  • 126,868 MILES
My car needs a transmission and I bought a 2000 Deville. So what would I need to do to pull both transmissions? Would I have to drop both sub-frames or just the driver side to remove the transmissions?
Monday, October 8th, 2018 AT 11:50 AM

7 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon.

Yes, the sub frames need to be dropped to be able to remove the transmission from the engines.

On some models, the sub frame does split. If it does, then yes, you can just remove the drivers side section of the sub frame.

The donor car you are using, why do you not drop the engine and transmission together along with the sub frame onto four jack stands. It will be much easier removing the transmission that way.

Roy
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Monday, October 8th, 2018 AT 12:28 PM
Tiny
KEITH ROBINSON2
  • MEMBER
  • 13 POSTS
I never did a transmission swap before so I will be doing this for the first time. I did not want to do more work then I have to. Still trying to figure out how to get to the converter bolts.
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Monday, October 8th, 2018 AT 12:37 PM
Tiny
ASEMASTER6371
  • MECHANIC
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Under the car, remove the starter and the cover to the torque converter. It will then open the area for you to access the bolts.

This is a very involved removal and replacement. You need a lift, an engine cradle, transmission jack, and something to hold the cradle while this process is happening.

Roy

Transmission Replacement

Tools Required
J 41623-B Cooler Quick Connect Tool
J 41160 Transmission Jack Adapter

Removal Procedure
1. Remove the upper filler panel.

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2. Remove the upper and lower air cleaner assemblies.
3. Disconnect the range selector cable terminal from the transaxle range selector lever.
4. Remove the nuts securing both the range selector cable bracket and heater pipe to the transaxle. Position the range selector cable bracket and heater pipe aside.
5. Remove the Magnasteer wire from the retaining clip.
6. Disconnect the master cylinder brake pipe retainers from the side rail.

Important: Supporting the brake pipes above the body side rail is necessary while removing the transaxle in order to prevent pinching of the brake pipes.

7. Remove the brake pipe retainers from the side rail and using mechanics wire, support the brake pipes above the side rail.

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8. Reposition the main wiring harness to gain access to the upper transaxle to engine bolts (1).
9. Remove the transaxle to engine bolts (1). The remaining bolt (2) will temporally retain the transaxle and will be removed from the underside of the vehicle.
10. Place a drain pan under the vehicle.

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11. Remove the upper transaxle oil cooler pipe retaining bolt from the radiator fan shroud.
12. Disconnect the upper transaxle oil cooler pipe from the radiator using the J 41623-B. Install plugs in the oil cooler pipe and the radiator to prevent fluid loss and contamination.

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13. Disconnect the lower transaxle oil cooler pipe from the transaxle and Install plugs in the oil cooler pipe and the transaxle to prevent fluid loss and contamination.
14. Disconnect the transaxle vent tube from the accelerator bracket.
15. Install the engine support fixture.
16. Raise and support the vehicle.

Caution: To avoid any vehicle damage, serious personal injury or death when major components are removed from the vehicle and the vehicle is supported by a hoist, support the vehicle with jack stands at the opposite end from which the components are being removed.

17. Secure the vehicle to the front hoist pads.
18. Remove the stabilizer shaft links.
19. Swing the stabilizer shaft downward in order to gain access to the power steering gear retaining bolts.
20. Remove the left front fascia extension.

Important: The following are exceptions while following the frame removal procedure:
Do not remove the front stabilizer shaft from the frame.
Do not remove the A.I.R. Pump assembly from the vehicle. Retain the pump to the body using mechanics wire.
Do not remove the insulators from the frame.
Do not remove the control arms from the frame.

21. Remove the front frame.

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22. Remove the bolt securing the left transaxle brace to the transaxle.
23. Loosen the nut securing the left transaxle brace to the engine.
24. Remove the left transaxle brace from the powertrain assembly.

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25. Remove the 3 ground connections from the side of the transaxle.
26. Disconnect the transaxle main electrical harness connector.

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27. Remove the bolt (2) securing the front transaxle brace (1) to the transaxle.
28. Remove the nut securing the secondary AIR pipe to the transaxle.

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29. Remove the nuts (2, 3) securing the vehicle speed sensor heat shield (1) to the transaxle.
30. Remove the vehicle speed sensor heat shield (1) from the vehicle.
31. Disconnect the vehicle speed sensor electrical connector.

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32. Remove only the bolts securing the front transaxle brace to the transaxle.

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33. Remove only the bolts securing the center transaxle brace to the transaxle.

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34. Disengage the right and left drive shafts (2) from the transaxle (1). The drive shafts do not have to be removed from the wheels.
35. Using mechanics wire, support the wheel drive shafts out of the way by tying them up to the strut spring.

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36. Remove the torque converter cover.

Important: Mark the flywheel to torque converter position so that they can be assembled in the same position.

37. Remove the flywheel to torque converter bolts.
38. Position the power steering gear pressure hose to the right side of the vehicle in order to clear the transaxle during removal.
39. Support the transaxle using the J 41160 and a suitable transmission jack.
40. Secure the J 41160 to the transaxle.

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41. Remove the nut (1) securing the left transaxle mount to the left transaxle mount bracket.

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42. Remove the remaining transaxle to engine bolt (2).
43. Separate the transaxle from the engine.
44. Tilt the transaxle using the support jack enough to allow clearance for the starter nose cone.

Important: Ensure clearance is maintained between the transaxle and the following:
The brake pipes
The secondary AIR pipe
The power steering pressure hose
The wiring harnesses

45. Carefully lower the transaxle from the vehicle.
46. Complete the following if transaxle replacement is necessary:
Remove the transaxle cooler pipe.
Remove the left transaxle bracket.
Remove the rear transaxle bracket.
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Monday, October 8th, 2018 AT 12:51 PM
Tiny
KEITH ROBINSON2
  • MEMBER
  • 13 POSTS
I have a car lift at my job and a transmission jack also and the starter is located under the intake in the center of the engine
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Monday, October 8th, 2018 AT 1:02 PM
Tiny
ASEMASTER6371
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You are right sorry, the 4.6 is under the intake. I thought it had a 4.9.

Anyway, there is a cover on the bottom for the converter that has to be unbolted.

Roy
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Monday, October 8th, 2018 AT 1:05 PM
Tiny
KEITH ROBINSON2
  • MEMBER
  • 13 POSTS
Okay, I will look and see. I appreciate it really.
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Monday, October 8th, 2018 AT 1:26 PM
Tiny
ASEMASTER6371
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No problem.

We are always glad to help.

Roy
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Monday, October 8th, 2018 AT 1:30 PM

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