I am having problems replacing starter on my isuzu trooper....can't remove it, unscrewed but stuck

The key lock cylinder operates the ignition switch sometimes ignition switch is separate sorry I didn't find where ignition switch is located if the lock cylinder is plugged into it.
You should have a starter relay and starter relay fuse.
This diagram of starter circuit shows the clutch pedal switch in the circuit on an automatic should have the neutral safety switch in the circuit. This is for 95 Rodeo.
Stater Motor Circuit Diagram (1995-1997 2.6L Isuzu Rodeo) (easyautodiagnostics.com)

How do I remove the key ignition cylinder? ' Isuzu SUV Forum (planetisuzoo.com)
Isuzu Trooper Ignition Switch Replacement ' Cost & Service ' RepairSmith
Changing the Ignition Lock: Changing the Ignition Lock, Safley ... (2carpros.com)
Starter and solenoid
Isuzu Trooper Starter replace under 1 Hour - YouTube
Isuzu Trooper (1995 - 1996) - fuse box diagram - Auto Genius
Starting System & Wiring Diagram - YouTube

Are the battery an cables good ? Check the starter electrical circuit , voltage drop testing ! Why pull the starter , until you have to ! Starter Voltage Drop test the circuit before you pull the starter !

Removing the front exhaust pipe from the engine will give you the necessary space to replace the starter motor on your Isuzu Trooper.
Click this link to get more details:---- http://technoanswers.blogspot.com/2011/02/how-to-replace-starter-on-1998-isuzu.html --------------------- This should help.Thanks.Helpmech.

I recommend you get the Haynes repair manual on your vehicle. Start by removing the negative battery terminal, then removing the retaining bolts from the starter followed by removing the wires from the starter. Reverse the process to put the new starter on.

most techs can replace it within 30 minutes or less

Unscrew and disconect the wires. Unscrew and remove the 2-17mm bolt's. Their is a small stud which holds the starter in place leave it to last unscrew it and thats it.

first you have to disconnect the battery, then disconnect the wiring in starter after that yu unscrew the mounting bolt turning counter clockwise. Remove the stater pulling it slowly, then fix the new one screw all nuts back. then reconnect all connection including battery . its done.

I just had to replace the starter on mine and you have to cut the exhaust pipe off to remove the starter. Take the 3 nuts off where the exhaust is attached to the manifold then using a sawzall I cut it in the straight section after the bend so it could sleeved and welded back with ease, once the pipe is out of the way the starter will just about fall out. Bad design by Isuzu. Perhaps some sort of pay back if you know what I mean.

pull the starter away from the bellhousing and turn the drive end upwards then it will come out from the engine compartment tight i know but i have just done mine so i know it will come

DOES YOUR TROOPER HAVE A 3.O DOHC TDI ENGINE IF SO WHAT GRADE OF OIL DID YOU USE