but I can see you taking your smart pills. get the price on the door while your at the yard. you may end up cutting the one you have to get into it. if you can see the lock working back and forth and hear a audible click as it goes past center then you know it's unlocked. each and every different body had a little different latch set up. but as a general rule most all of GMs were a gravity drop not a spring. as you closed the door the latch would go over center and drop in place. you pull the handle and it released the sear key allowing you to pull the door open and the striker to roll the latch into the open position. inside remote and out side remote operate off a different leaver allowing you to open the door from inside when it's locked and the out side to by pass the trip when it locked. if you unlock it you should fell the pressure from the outside handle working the leaver. the only thig that could cause the door to not open if the lock is working would be something beiding on the latch. I have gotten pop bottle, beer caps out of them. but if the door has been giving you trouble and is out of adjustment it may just be a tab of steel from the door frame rolled in the latch. OK now we get to were the rubber meets the road. the nascar thing is not in order here. you have had the body guy pick at the thing for a couple hr now. you have tugged and pulled pressed and all most pryed.
we are at the big hammer stage of getting the door open. your sure the lock is working? unlock the door. get in side. slid the seet all the way back. if you can, hold the inside remote open or have some brave soul hold the plunger in and pull as you would to open the door. lay on you back with you feet to the door using both of them kick the SOB with you heels just under the roll of the trim pad as far back as you can. the object is to force the latch past what ever is jamming it. you do a come a long on the out side handle you most likly just pull it threw the skin. you pry, you damage the center door. your risk is braking the glass up or down the risk is the same. I would do it up. you may damage the trim pad but only if you get up to high. trust me trying to get it off with the door closed will damage it more. she has jammed or fell past something that doesn't belong in there and only force will get it open. but it only takes as much force as it did to close it.