I'm trying to remove my oil pan on a 2000 Silverado 1500 with a 4.3L V6. I've removed all of the bolts, the starter, the transmission cooling lines, the oil level sensor bracket, the front wire bracket, the transmission-to-oil pan bolts, the starter bracket bolts (located on the top, passenger-side of the oil pan), etc. I cant seem to either break the gasket seal or perhaps there are other bolts. Please help

1. Disconnect the battery negative cable. Refer to Battery Cable Replacement (Positive/Negative) in Starting and Charging.
2. Raise the vehicle. Refer to Vehicle Lifting.
3. Remove the oil pan drain plug and drain the engine oil into a suitable container.
4. Remove the oil filter.
5. Remove the oil pan skid plate.
6. Remove the crossbar.
7. Remove the bolts holding the battery cable brackets to the oil pan.
8. Remove the starter and move aside. Refer to Starter Motor Replacement in Starting and Charging.
9. Remove the transmission cover.
10. Remove the bracket for the starter positive cable and the transmission cooler lines form the side of the oil pan.
11. Disconnect the low oil level sensor electrical connector.
12. Remove the access plugs for the oil pan rear nuts.

13. Remove the following oil pan fasteners:
13.1. Remove the oil pan bolts.
13.2. Remove the two nuts at the crankshaft rear oil seal housing.
13.3. Remove the transmission to oil pan bolts.

14. Remove the oil pan and the gasket. Refer to Oil Pan Removal.

IMPORTANT: The low oil level sensor is not reusable. Use a NEW low oil sensor.

15. Remove the low oil level sensor, if required.
16. Clean all sealing surfaces on the engine and the oil pan. Refer to Oil Pan Clean and Inspect.
INSTALLATION PROCEDURE

NOTICE: Refer to Fastener Notice in Service Precautions.

IMPORTANT: The low oil level sensor is not reusable. Use a NEW low oil sensor.

1. Install a NEW low oil level sensor, if removed.
Tighten the sensor to 20 Nm (15 ft. Lbs).
NOTICE: Any time the transmission and the engine oil pan are off of the engine at the same time, install the transmission before the oil pan. This is to allow for the proper measurement of the oil pan tolerance. Failure to achieve the correct clearance can result in premature transmission failure.
2. Install the oil pan. Refer to Oil Pan Installation.
3. Install the transmission to oil pan bolts and nuts.
Tighten the bolts to 47 Nm (35 ft. Lbs.).
4. Install the access plugs for the oil pan rear nuts,
5. Install the bracket for the starter positive cable and the transmission cooler lines to the side of the oil pan.
Tighten the bolts to 12 Nm (106 inch lbs).
6. Connect the low oil level sensor electrical connector.
7. Install the transmission cover.
Tighten the bolts to 12 Nm (106 inch lbs).
8. Install the starter. Refer to Starter Motor Replacement in Starting and Charging.
9. Install the bolts holding the battery cable brackets to the oil pan.
Tighten the bolts to 12 Nm (106 inch lbs).
10. Install the crossbar.
Tighten the bolts to 100 Nm (74 ft. Lbs.).
11. Install the oil pan skid plate.
Tighten the bolts to 20 Nm (15 ft. Lbs).
12. Install the oil filter and the oil pan drain plug. Refer to Engine Oil and Oil Filter Replacement
13. Lower the vehicle.
14. Fill the engine with oil. Refer to Engine Oil and Oil Filter Replacement
15. Connect the battery negative cable. Refer to Battery Cable Replacement (Positive/Negative) in Starting and Charging.

4x4
1. Open the hood.
2. Disconnect the battery negative cables.
3. Remove the intake air assembly.
4. Remove the radiator shroud retaining bolts.
5. Install engine support fixture # 8534B .
6. Raise and support the vehicle.

WARNING: HOT OIL CAN CAUSE PERSONAL INJURY.


7. Drain the engine oil (Refer to 09 - Engine/Lubrication/OIL - Standard Procedure) .
8. Loosen the front engine mount bolts.
9. Lower the vehicle.
10. Use the engine support fixture # 8534B to raise engine out of the front mounts.
11. Remove the engine oil dipstick.
12. Raise and support the vehicle.
13. Remove oil pan bolts, break the pan to block seal, and lower pan slightly and remove oil suction tube fasteners.
14. Remove oil pan and suction tube.
15. Remove the 2 bolts from the front of the engine block stiffener.
16. Remove the oil pan.


4x2
1. Open the hood.
2. Remove the negative battery cables.
3. Raise and support the vehicle.
4. Remove the transmission oil cooler lines.
5. Remove the propeller shaft.
6. Remove the starter bolts.
7. Support the starter.
8. Remove the torque converter bolts.
9. Remove the exhaust hanger bolts.
10. Remove the gear shift cable.
11. Remove the wiring harness.
12. Remove the transmission mount.
13. Remove the crossover bolts.
14. Position the transmission jack.
15. Remove the bell housing bolts.
16. Remove the transmission.
17. Remove the flywheel housing bolts (8).
18. Remove the flex plate bolts (8).
19. Remove the engine oil dip stick.
20. Drain the oil.
21. Remove the steering rack bolts.
22. Remove the oil pan bolts.
23. Remove the oil pickup bolts.
24. Remove the oil pan.

5.2 liter V8 engine?

Remove the four front skid-plate bolts holding the front skid plate, using a ratchet and socket. Remove the skid plate.

Pull the plastic splash shield away from the vehicle, loosening the retaining clips. Remove the splash shield.

Place an oil drain container under the oil pan. Loosen the drain fitting with a wrench until oil drains from the pan. When oil is done draining, tighten the drain fitting.

Disconnect the electrical connections running to the starter motor. Remove the starter motor mounting bolts with a ratchet and socket, then remove the starter motor.

Remove the oxygen sensor socket from the exhaust pipe, using a wrench.

Remove the exhaust manifold bolts where the exhaust meets the manifold on both sides, using a ratchet and socket

Place an jack under the transmission to support it. Remove the pressure on the transmission crossmember.

Remove the bolts that hold the transmission crossmember in place, using a ratchet and socket. Then remove the crossmember. Place a jack stand under the transmission to keep the transmission from falling off the jack if hit. Once removed, the exhaust will hang down, allowing enough room to remove the oil pan.

Disconnect the oil level sensor and the nut retaining the transmission cooling lines, using a wrench.

Remove the oil pan bolts with a ratchet and socket, then remove the oil pan and gasket.

Clean the mounting surfaces of the new oil pan and engine block. Make sure what ever you use to clean the surfaces dosn't gouge the metal.

Place a coat of RTV (gasket) sealer on the engine block where the pan will meet the rear main cap.

Place the new gasket on the pan and push the new oil pan into place. Finger tighten the oil pan mounting bolts to hold it in place. Tighten the bolts with a torque wrench to 18 ft-lbs. DO NOT OVER TIGHTEN THE BOLTS! Doing so will cause the gasket to deform and create leaks!

Connect the oil level sensor and the nut retaining the transmission cooling lines, using a wrench.

Place the exhaust back into position and replace the transmission crossmember bolts and crossmember with a ratchet and socket.

Remove the jack supporting the transmission.

Connect the exhaust back to both sides of the manifold, tightening the bolts with a torque wrench to 20 ft-lbs.

Attach the oxygen sensor socket to the exhaust pipe with a wrench.

Replace the starter motor by installing the starter motor mounting bolts with a ratchet and socket. Connect the electrical connections to the starter motor that were disconnected during removal.

Push the retaining clips on the plastic splash shield into the appropriate retaining clip holes.

Replace the front skid plate by replacing the four front skid plate bolts with a ratchet and socket.

Fill the engine with 5 quarts of oil. Make sure to check the level on the dipstick to find the exact level when filling.

you will have to remove the starter flywheel inspectin cover and move the trans. cooling lines out of the way , undo the motormounts and raise the engine to allow clearance, remove the bolts for the oil pan and if necessare you may have to remove the pickup tube and oil pump to get the pan out

2wd Models

1. Disconnect the negative battery cable. Drain the engine oil.
   
2. Remove the oil dipstick.
   
3. If necessary remove the exhaust pipe crossover.
   
4. If equipped with automatic transmission, remove the converter housing pan and the transmission oil cooler line retainer from the bracket.
   
5. On 1996-98 models, remove the oil filter and if equipped, the oil filter adapter.
   
6. If necessary, remove the starter brace and bolt and swing the starter aside.
   
7. Remove the strut rods, if equipped.
   
8. Remove the oil pan and discard the gaskets.
   

To install:

1. Apply a suitable sealant such as GM part number 12346192 or its equivalent to the front cover-to-block joint and to the rear crankshaft seal-to-block joint. Apply the sealant about 1 inch (25mm) in both directions from each of the four corners.
   
2. Clean all gasket surfaces and use new gaskets to assemble.
   
3. Install new gasket and seals.
   
4. Install the oil pan.
   
5. On 1988-95 models, tighten the pan bolts to 100 inch lbs. (11 Nm). Tighten the pan nuts to 17 ft. lbs. (23 Nm).
   
6. On 1996-98 models, tighten the oil pan nuts and bolts to 18 ft. lbs. (25 Nm).
   
7. Install the strut rods, if equipped.
   
8. If removed, install starter, starter brace and bolt.
   
9. If equipped, install the oil filter adapter.
   
10. If removed, install the oil filter.
    
11. If equipped with automatic transmission, install the converter housing pan and the transmission oil cooler line retainer to the bracket.
    
12. Install the exhaust pipe crossover.
    
13. Install the oil dipstick.
    
14. Fill the engine with oil and check for leaks.
    

These instructions are for a 5.3L. Unless it is a V6 or diesel, the instructions will be similar if you have a different gas V8.

1. Disconnect the negative battery cable
2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
3. Remove the protective shields as necessary.
4. Remove the starter solenoid shield.
5. Remove the starter to transmission close out cover bolt.
6. Disconnect the engine oil level sensor connection.
7. Remove the front axle mounting bracket through bolt nut, if equipped with four wheel drive (4WD).
8. Reposition the front axle mounting bracket through bolt until the bolt tip is flush with the support bushing. Do not remove the bolt, if equipped with 4WD.
9. Remove the mounting bolts from the engine block.
10. Slide the starter forward until the starter clears the transmission.
11. Remove the starter transmission close out cover
1. Disconnect the positive battery cable and wiring harness from the starter.
2. Remove the starter from the vehicle.
1. Connect the positive battery cable to the starter. Tighten Tighten the nut to 16 N.m (12 lb in) .
2. Install the starter transmission close out cover.
1. Install the mounting bolts to the engine block. Tighten Tighten the bolts to 50 N.m (37 lb ft) .
2. Reposition the front axle mounting bracket through bolt until the bolt is fully seated. if equipped with 4WD.
3. Install the front axle mounting bracket through bolt nut, if equipped with 4WD. Tighten Tighten the nut to 90 N.m (67 lb ft) .
4. Disconnect the engine oil level sensor connection.
5. Install the starter to transmission close out cover bolt.
6. Install the starter solenoid shield.
7. Install the protective shields as necessary.
8. Remove the safety stands.
9. Lower the vehicle.
10. Connect the negative battery cable. Tighten Tighten the bolts to 17 N.m (13 lb ft) .

4.0L Engine To Remove:

1. Disconnect negative battery cable.
2. Lift the vehicle.
3. Drain the engine oil.
4. Remove or disconnect the following:
   • Exhaust pipe from exhaust manifold.
   • Exhaust hanger at the catalytic converter and lower the pipe.
   • Starter motor.
   • Flywheel/torque converter housing access cover.
   • Oil level sensor (if equipped).
5. Place a pole jack under vibration dampener with a piece of wood between dampener and jack.
6. Remove or disconnect the following:
   • Engine mount through bolts and raise engine for clearance to remove pan.
   • Transmission cooler lines (if equipped).
   • Oxygen sensor harness from oil pan mounting studs.
   • Oil pan bolts and studs.
   • Oil pan and gasket.

To Install:

1. Clean the gasket mating surfaces.
2. Apply Mopar® Silicone Adhesive Sealant or equivalent onto the cylinder block in four location as shown.

1. Attach the pan gasket to the oil pan with Hi-tack or equivalent (2003-2005 vheicles).
2. Use 1 ½ x ¼ inch bolts to fabricate alignment dowels. Cut off the head of the bolts and cut a slot into the top of the dowels (2006 vehicles).

1. Install two dowels into the timing case cover (2006 vehicles).
2. Install two dowels into the cylinder block (2006 vehicles).
3. Place the gasket over the dowels and onto the cylinder block and timing case cover (2006 vehicles).
4. Position the oil pan.
5. Install the 1/4 inch oil pan bolts. Tighten to 84 in-lb (9.5 Nm).
6. Install the 5/16 inch oil pan bolts. Tighten to 132 in-lb (15 Nm).
7. Remove the dowels.
8. Install the remaining 1/4 inch oil pan bolts. Tighten to 84 in-lb (9.5 Nm) (2006 vehicles).
9. Lower the engine onto the engine mounts.
10. Install the through bolts and tighten the nuts.
11. Remove jack stand and remove the piece of wood.
12. Install the flywheel and torque converter access cover.
13. Install starter motor.
14. Connect the exhaust pipe to the hanger and to exhaust manifold.
15. Install the transmission oil cooling lines (if equipped).
16. Install the oxygen sensor wiring supports to the oil pan mounting studs.
17. Install the drain plug into the oil pan. Tighten to 25 ft-lb (34 Nm).
18. Lower the vehicle.
19. Connect negative battery cable.
20. Fill the oil pan with oil. WARNING
    Use extreme caution when the engine is operating. Do not stand in a direct line with the fan. Do not put your hands near the pulleys, belts or fan. Do not wear loose clothing.
    
21. Start the engine and inspect for leaks.

here's v6 3.8L

Section 03-01A: Engine, 3.8L 1996 Thunderbird, Cougar Workshop Manual
IN-VEHICLE SERVICE Oil Pan/Oil Pump Screen Cover and Tube Removal

1. Disconnect battery ground cable (14301).
   

1. Remove air cleaner outlet tube (9B659). Refer to Section 03-12 .
   

1. Remove two bolts retaining radiator upper sight shield (8C291) and position radiator upper sight shield aside.
   

1. Remove hood weather seal.
   

1. Remove windshield wipers.
   

1. Remove LH cowl vent screen and wiper module.
   

1. Install Three Bar Engine Support D88L-6000-A or equivalent.
   

1. Raise vehicle on a hoist. Refer to Section 00-02 .
   

1. Remove front engine support insulator through-bolts.
   

1. Partially lower vehicle.
   

1. Raise engine and support with Three Bar Engine Support D88L-6000-A or equivalent.
   

1. Raise vehicle.
   

1. Remove starter motor (11002).
   

1. Position drain pan.
   

1. Drain engine oil.
   

1. Remove oil bypass filter (6714).
   

1. Remove starter motor wire, ground strap and automatic transmission oil cooler lines.
   

1. Remove oil pan-to-bell housing bolts and bolts at crankshaft position sensor lower shield.
   

1. Remove remaining oil pan retaining bolts.
   

1. Remove steering shaft pinch bolt and separate steering shaft.
   

1. Position transmission jack under front sub-frame (5C145).
   

1. Remove six rearward bolts on front sub-frame. Loosen two forward front sub-frame bolts.
   

1. Remove lower shock absorber-to-front suspension lower arm bolts and nuts (both sides).
   

1. Lower front sub-frame.
   

1. Remove oil pan (6675).
   

1. Empty any residual oil from oil pan.
   

1. Remove oil pump screen cover and tube retainer bolts and support bracket nut. Remove oil pump screen cover and tube (6622) and discard oil pump inlet tube gasket (6626).
   

Hi
If it has an aluminum oil pan there is bolts behind transmission inspection cover.

No big job Really. Just locate your Drain Plug for the Oil. Thepan is right there, Remove the Bolts around the Pan and Remove. You will lose all of your oil so, Have something there to catch it all. Clean it all around the Edges of the Block where the Pan mounts with Degreaser and Make sure that you Scrape the Old Gasket off of Both the Block and the Pan. Run a Thin Bead of Blue ATV Silicone around the Pan Edge, Lay the Gasket on top of this Silicone. Put another Thin line on top of the Gasket and Reinstall. This Silicone is High Temp Silicone and will Seal Very Well. Make sure to put oil Back in the Motor! Please Rate my Response, I need all the Help That I can Get! Thanks!