My 2002 Bravada has smart track, 4x4, the front diferential has failed. It is bolted to the side of the oil pan which I have removed the bolts. The diferential is loose but I can't remove it from

This is a very involved project. Here is what the manual says:

Oil Pan Replacement Oil Pan Replacement Removal Procedure

1. Disconnect the negative battery cable.
2. Install the engine support fixture.
3. Raise and support the vehicle.
4. Drain the crankcase.
5. Remove the right front tire and wheel.
6. Remove the right front splash shield.
7. Remove the wheel speed sensor harness from the right suspension support.
8. Remove the right front ball joint, bolt, and nut. Separate the ball joint from the steering knuckle.
9. Remove lower closeout panel.

Remove the air conditioning (A/C) compressor bolts and position the compressor aside.

10. Remove the braces that support the engine to the transmission.
11. Remove the starter.
12. Disconnect the oil level sensor.
13. Remove the retainers that secure the brake line to the frame.
14. Remove the right side engine mount nuts and bolts.
15. Loosen the left side cradle bolts.
16. Remove the frame bolts from the right front and the right rear.

Remove the oil pan side bolts.

17. Remove the oil pan bolts.
18. Remove the oil pan.
19. Remove the oil pan gasket.

no engine stated, they even have diesel. or 3.7L GAS.
I toss my first coil, land on 3.7L V6.
great question, like the very first ever.
most just do it and get in trouble. vast posts in this.
but whats up, what is wrong, what part failed.?
this is best to know, so we can send you the official chapter on this from jeep.
sure use jackstands, never jacks only and never bricks .
04,KJ jeep 4wd pan off.
in chapter 9 ,under diagnostics, and pan leaks. that?
it says read
Refer to 9 -
ENGINE/LUBRICATION/OIL PAN -
REMOVAL). page 1555 (3.7L)
and i quote:
REMOVAL
1. Disconnect and isolate negative battery cable.
2. Install engine support fixture.
3. Raise and support vehicle.
4. Remove front wheel assemblies.
5. Remove skid plate (if equipped). (Refer to 13 -
FRAME & BUMPERS/FRAME/FRONT SKID
PLATE - REMOVAL)
6. Drain engine oil.
7. Mark adjustment cam position of front lower control
arm bolts.
8. Remove front lower control arm bolts. (Refer to 2 -
SUSPENSION/FRONT/LOWER CONTROL ARM -
REMOVAL)
9. Disconnect LH tie rod. (Refer to 19 - STEERING/
LINKAGE/TIE ROD END - REMOVAL)
10. Disconnect LH lower ball joint (Refer to 2 - SUSPENSION/
FRONT/LOWER BALL JOINT -
REMOVAL)
11. Disconnect LH strut clevis (Refer to 2 - SUSPENSION/
FRONT/CLEVIS BRACKET - REMOVAL)
12. Remove LH front axle (Refer to 3 - DIFFERENTIAL
& DRIVELINE/HALF SHAFT - REMOVAL)
13. Remove front axle brace bolts.
14. Remove front prop shaft. (Refer to 3 - DIFFERENTIAL
& DRIVELINE/PROPELLER SHAFT/
PROPELLER SHAFT - REMOVAL)
15. Drain front axle.
16. Using a transmission jack, support front axle.
17. Remove axle bracket bolts. (Refer to 3 - DIFFERENTIAL & DRIVELINE/FRONT AXLE - REMOVAL)
18. With RH axle still in place, remove front differential.
19. Remove transmission oil cooler line bracket.
20. Remove engine to transmission stiffening bracket.
21. Position Special Tool 8534 on fender lip and align the slots in the brackets with the fender mounting holes.
22. Secure brackets to the fender using four M6 X 1.0 X 25 MM flanged cap screws.
23. Tighten the thumbscrews to secure the sleeves to the support tube.
24. Secure the support tube in an upright position.
25. Assemble the flat washer, thrust bearing, hook and T handle.
26. Using the M10 X 1.75 mm flanged nut supplied with the support fixture, secure the chain to the front engine
lifting stud.
27. Loosen engine mounts.
28. Remove oil pan bolts.
29. Seperate oil pan (1) from engine.
30. Move oil pan to one side, remove oils sump bolt and windage tray bolts,
NOTE: Do not pry on oil pan or oil pan gasket. Gasket is integral to engine windage tray and does not come
out with oil pan.
end quote, (off)

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.

Hello skullz, this is a fairly big task but it can be done in your driveway. Take your time, keep track of all your parts you remove. Use masking tape and a sharpie to label stuff if you feel like it will make easier to reinstall....These steps are for a 99 blazer 4x4 with an aluminum pan. You wont need to do some of the shift linkage removal due to the AWD and electronics the Olds has.

Disconnect battery and remove battery tray. Disconnect shift cable at actuator. Raise and support vehicle.

Remove underbody shield from steering linkage and engine oil pan. Drain crankcase. Remove starter motor.

Remove oil cooler pipes and both front wheels. Disconnect electrical connector and remove wiring harness bracket at shift cable housing.

Remove 3 shift cable housing bolts and disconnect shift cable from differential carrier. Remove both front drive axles. Remove differential housing.

Remove 10 oil pan bolts, 2 nuts at crankshaft rear oil seal and remove 2 transmission to oil pan bolts....Remove oil pan from vehicle....When you reinstall & tighten the oil pan bolts, start in the middle of the pan and go back to the bellhousing, directly across from each bolt---left, right, left right...then, from the middle towards the front of engine, right, left, right left...Torque to 18 ft/lbs

Good luck... if you tackle this job its a fun one....

raise and support the vehicle. unhook the battery cables. remove the exhaust y pipe. remove the starter. remove the rear cover by the transmission. drain the oil. remove the pan bolts. remove and clean the pan. replace the pick up tube while your there. apply silicone to the front and rear of the pan on both sides of the gasket. reinstall the pan and the other parts described. tighten the bolts to 9 foot pounds and fill with new oil. start and run the car for a few and recheck the torque on the pan bolts. i suggest lock tight for the pan bolts when installing to keep them for working loose. just a dab on each one will do it. hope this helps

the front differential> it is bolted to the oil pan and the half shaft runs through the middle of it to meet the cv axle

Did you remove the catalytic converter, and motor mount? Lots of stuff has to come off to get this pan out. :o(

3.8L Engine

1. Drain the engine oil.
2. Remove or disconnect the following:
   
   Negative battery cable Throttle body air inlet duct Engine mount struts Accessory drive belt
   
3. Install an engine support fixture.
   
   Catalytic converter from the right exhaust manifold Right front wheel Right side splash shield Oil filter and discard A/C compressor bracket and reposition the compressor Power steering oil cooler pipe brackets from the frame Engine mount bracket bolts Lower engine mount nuts Torque converter cover Oil level sensor electrical connector Oil level sensor
   
4. Raise the vehicle and place a support under the frame.
   
   Right side frame bolts and loosen the left side bolts Engine mount and bracket Oil pan

Yes, you need to pull the engine to remove the oil pan. This requires that you remove the propeller shafts and the third cross member to slide the transmission toward the rear of the vehicle. I suggest you purchase a service manual before you start this process. More than likely the rod bearing for cylinder 1 has failed. This seems to be a common problem with later model 3.5L Trooper engines because the oil pump and oil gallery do not deliver oil as efficiently to the number 1 rod bearing.

Fluid - A/T: Service and Repair
Transmission Fluid and Oil Filter Changing
REMOVAL PROCEDURE
1. Raise and suitably support the vehicle. Refer to Vehicle Lift Points.
2. Place drain pan under pan
3. Remove oil pan bolts from front and sides only.
4. Loosen the rear oil pan bolts approximately four turns.
5. Lightly tap the oil pan with a rubber mallet or pry to drain the fluid from main case.
6. Remove the oil pan bolts from rear oil pan and gasket.
7. Remove front oil pan bolts leaving one corner bolt in loosely.
8. Lightly tap oil pan with rubber mallet or pry to drain fluid.
9. Remove the following remaining components:
^ The front oil pan bolts
^ The oil pan
^ The gasket
10. Remove the oil filter bolts and filter.
11. Clean the following components:
^ The transmission case
^ The front adapter case
^ The oil pan gasket surfaces with solvent
^ Air dry
^ All traces of gasket material must be removed
INSTALLATION PROCEDURE
1. Install the gasket.
2. Install the oil filter.
3. Install the bolts.
^ Tighten the transmission oil filter bolts to 20 Nm (15 ft. lbs.).
NOTICE: Refer to Fastener Notice in Service Precautions.
4. Install the front oil pan.
5. Install the front oil pan gasket
6. Install the front oil pan bolts
^ Tighten the front oil pan bolts to 11 Nm (96 inch lbs.).
7. Install the following components:
^ Install the pan
^ Install the gasket
^ Install the bolts
^ Tighten the oil pan bolts to 11 Nm (96 inch lbs.).
8. Refill the transmission with DEXRON III through oil pan fill plug on the side of the (main case) oil pan. Fill the transmission to lower edge of oil
pan fill. Fill plug opening using and oil suction gun.
^ Tighten the oil pan fill plug to 45 Nm (33 ft. lbs.).
9. Lower the vehicle.
10. Check the transmission fluid level. Refer to Transmission Fluid Checking Procedure.