Change motor oil pan

• https://itstillruns.com/remove-pan-1997-chevrolet-s10-6524056.html---this is stated for 2wd ------this is 4wd ------Pan removal is possible with the engine in the vehicle on some of the powertrain combinations it is possible, it will often require the removal or repositioning of components including, the steering linkage assembly, the forward drive axle and crossmember (4WD) and/or the engine mounts. It is a difficult and tedious task to remove the oil pan with the engine in the vehicle. The chances of contaminating the bearing surfaces or damaging other internal engine components is great. Also, working under the vehicle with the engine jacked up in the frame puts you at great risk for great personal injury. Therefore, it is desirable in most cases to remove the engine in order to gain access to the oil pan.
  I imagine though, the oil pan could be changed without removing the engine even if you have to unbolt the motor mounts jack up the engine and place 2x4 pieces of wood between the block and frame to keep the engine up high enough to remove the pan.
  For the complete Chilton instructions ,click here.
  I might add, if there is a distributor at the rear near the firewall I would remove the cap and rotor so it dont get cracked while jacking the engine. Also, remove the bolts from the fan shroud is the fan will hit the shroud when jacking the engine and either remove the shroud or let hang free-----.courtesy of chilton

Motor mount bolts need to be totally removed. If you can get at the front pulley from underneath put a wood block on it and jack from there. Watch your fan at the shroud to make sure it don't bind up might have to remove the shroud or fan

Hi there:

1. Drain the cooling system.

CAUTIONWhen draining the coolant, keep in mind that cats and dogs are attracted by ethylene glycol antifreeze and are quite likely to drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain the coolant into a sealable container. Coolant should be reused unless it is contaminated or several years old.

1. Remove the bolts attaching the fan shroud to the radiator and position the shroud over the fan.
2. Remove the upper intake manifold and throttle body (see Fuel System ).
3. Remove the nuts and lockwashers attaching the engine support insulators to the chassis bracket.
4. If equipped with an automatic transmission, disconnect the oil cooler line at the left side of the radiator.
5. Remove the exhaust system.
6. Raise the engine and place wood blocks under the engine supports.
7. Drain the crankcase.

CAUTIONThe EPA warns that prolonged contact with used engine oil may cause a number of skin disorders, including cancer! You should make every effort to minimize your exposure to used engine oil. Protective gloves should be worn when changing the oil. Wash your hands and any other exposed skin areas as soon as possible after exposure to used engine oil. Soap and water, or waterless hand cleaner should be used.

1. Support the transmission with a floor jack and remove the transmission crossmember.
2. Remove the oil pan attaching bolts and lower the oil pan onto the crossmember.
3. Remove the two bolts attaching the oil pump pickup tube to the oil pump. Remove the nut attaching the oil pump pickup tube to the No. 3 main bearing cap stud. Lower the pickup tube and screen into the oil pan.
4. Remove the oil pan from the vehicle.

To install:

1. Clean the oil pan, inlet tube and gasket surfaces. Inspect the gasket sealing surface for damages and distortion due to overtightening of the bolts. Repair and straighten as required.
2. Position a new oil pan gasket and seal to the cylinder block.
3. Position the oil pick-up tube and screen to the oil pump and install the lower attaching bolt and gasket loosely. Install nut attaching to number 3 main bearing cap stud.
4. Place the oil pan on the crossmember. Install the upper pick-up tube bolt. Tighten the pick-up tube bolts.
5. Position the oil pan to the cylinder block and install the attaching bolts. Tighten to 10-12 ft. lbs. (13-16 Nm).
6. Install the transmission crossmember.
7. Raise the engine and remove the blocks under the engine supports. Bolt the engine to the supports.
8. Install the exhaust system.
9. If equipped with an automatic transmission, connect the oil cooler line at the left side of the radiator.
10. Install the nuts and lockwashers attaching the engine support insulators to the chassis bracket.
11. Install the upper intake manifold and throttle body (see Fuel System ).
12. Install the fan shroud.
13. Fill the crankcase.
14. Fill and bleed the cooling system.

Fig.: 5.0L and 5.8L engine oil pan gaskets and seals


1987 5.8L Engine With 4-Bbl. Carburetor

1. Remove the oil dipstick (on pan entry models only).
2. Remove the bolts attaching the fan shroud to the radiator and position the shroud over the fan.
3. Remove the nuts and lockwashers attaching the engine support insulators to the chassis bracket.
4. If equipped with an automatic transmission, disconnect the oil cooler line at the left side of the radiator.
5. Raise the engine and place wood blocks under the engine supports.
6. Drain the crankcase.

CAUTIONThe EPA warns that prolonged contact with used engine oil may cause a number of skin disorders, including cancer! You should make every effort to minimize your exposure to used engine oil. Protective gloves should be worn when changing the oil. Wash your hands and any other exposed skin areas as soon as possible after exposure to used engine oil. Soap and water, or waterless hand cleaner should be used.

1. Remove the oil pan attaching bolts and lower the oil pan onto the crossmember.
2. Remove the two bolts attaching the oil pump pickup tube to the oil pump. Remove nut attaching oil pump pickup tube to the number 3 main bearing cap stud. Lower the pick-up tube and screen into the oil pan.
3. Remove the oil pan from the vehicle.
4. Clean oil pan, inlet tube and gasket surfaces. Inspect the gasket sealing surface for damages and distortion due to overtightening of the bolts. Repair and straighten as required.
5. Position a new oil pan gasket and seal to the cylinder block.
6. Position the oil pick-up tube and screen to the oil pump and install the lower attaching bolt and gasket loosely. Install nut attaching to number 3 main bearing cap stud.
7. Place the oil pan on the crossmember. Install the upper pick-up tube bolt. Tighten the pick-up tube bolts.
8. Position the oil pan to the cylinder block and install the attaching bolts. Tighten to 10-12 ft. lbs. (13-16 Nm).

Hope this helps, also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Oil Pan Removal

1. Remove the bolts attaching the fan shroud (8146) to the radiator (8005) and position the fan shroud over the fan assembly.
   
2. Raise vehicle.
   
3. Remove exhaust manifold-to-exhaust pipe.
   
4. Disconnect the oil cooler line at the left side of the radiator if equipped with an automatic transmission (7003).
   
5. Remove the nuts and lockwashers attaching the engine support insulators to the chassis bracket.
   
6. Drain the crankcase.
   
7. Loosen transmission mounting nuts.
   
8. Raise the engine (6007) and place wood blocks securely under the engine supports.
   
9. Remove the oil pan attaching bolts and lower the oil pan (6675) onto the crossmember.
   
10. Remove the oil pan from the vehicle.
    

Im not sure if you are talking about the motor pan or the tranny pan. But I have lifted the motor and tranny together on a vehicle to change the motor pan and mounts before. I remember having to loosen the fan shroud. Undo linkage on the tranny and make sure the shifter boots were loose. The key for me was going real slow with the crane and having extra eyes around. It was a pain but it worked out.