How to remove Front differential?

This query was inquired for
GMC Jimmy year 2001 model.

On this car models removing Front differential top bolt is hard because,nut is inside the frame.
You will have to put a socket, (18mm) on an extension through the hole in the frame and use a ratchet on the nut, holding the bolt with a wrench.

See the details below :-------------

Replacement

Differential Carrier Assembly Replacement 

Removal Procedure

Unlock the steering column so the steering linkage is free to move.
Raise the vehicle. Refer to Vehicle Lifting.
Place jack stands or utility stands (such as GMDE 123-B67313) at the rear end of the vehicle.
Remove the front tire and wheel assemblies.
Remove the steering linkage shield.
Remove the differential carrier shield (if equipped).
Drain the front drive axle.
Remove the lower part of shock absorber bolt and nut.
Remove the wheel drive shafts.
Remove the front propeller shaft.
Remove the steering relay rod from the idler and pitman arms.
Disconnect the electrical connector from the four-wheel drive indicator switch.
Disconnect the clutch cable from the differential carrier assembly.
Disconnect the vent hose from the differential carrier assembly.
Attach a transmission jack to the differential carrier assembly.
Remove the inner axle shaft housing to frame bracket bolts, nuts and washers.

Remove the lower differential carrier assembly mounting bolt and the nut.
Remove the upper differential carrier assembly mounting bolt and the nut.
Remove the differential carrier assembly by rolling the carrier counterclockwise while lifting up to gain clearance from the mounting ears.

Installation Procedure 

1. Install the differential carrier assembly to the vehicle.

1. Install the upper differential carrier assembly mounting bolt, the washer, and the nut. Install the lower differential carrier assembly mounting bolt, the washer, and the nut.
   Tighten the differential carrier assembly bolts to 103 Nm (76 ft. lbs.). 

1. Install the inner axle housing to frame bolts, the washers, and the nuts. Tighten the inner axle housing nuts to 98 Nm (72 ft. lbs.).
Install the clutch cable to the differential carrier assembly. Connect the vent hose to the differential carrier assembly. Install the electrical connector to the four-wheel drive indicator switch. Install the relay arm to the idler and pitman arms. Install the front propeller shaft. Install the wheel drive shafts. Install the lower part of shock absorber bolt and nut. Inspect the axle lubricant level and add, if necessary. Install the steering linkage shield. Install the differential shield (if equipped). Install the front tire and wheel assemblies. Remove the jack/utility stands. Lower the vehicle.

Actually there is hole in the frame ,but its bit hidden to see directly.
The upper arm when it's already off the ball joint sometimes will swing up high enough to get in there.

See the diagram below :---------





But you could remove it to make more room.

This details will help you thanks.

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