My 95 GMC Yukon backfires and tries to stall when I accelerate

You definitely need to get your timing light out and hook it up and my guess would be that your timing is advanced a little too much.

Check for trouble codes.

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Click both the link one by one:----Nissan Pathfinder Backfires?http://technoanswers.blogspot.in/2012/02/nissan-pathfinder-backfires.html
------------Nissan Pathfinder stalls and bucks on Acceleration?http://technoanswers.blogspot.in/2012/02/nissan-pathfinder-stalls-and-bucks-on.html-----------This will help.Thanks.

Most likely it is due t5o dirty fuel injectors or bad mass air flow sensor

Have the pinion bearing in the rear diff checked.

look for vac leak at egr valve, when cold spray carb cleaner on and see if it speeds up the eng

I would suspect a burnt valve. An engine compression test will verify this.

you may also want to consider that the coil pack is failing... i remember when my windstar coilpack failed i had an awful time just getting up a small hill... can't recall if it shuddered tho.

Robert

This sounds like it may be as simple as cleaning the water or gunk out of the gas tank which is what I always do 1st because it's easy and inexpensive.
If your fuel is contaminated with gunk, grime, water and/or bottom junk like rust this will cause stalling!

Fill the tank with High Test, Add some dry gas and a good fuel system cleaner or 2 or 3 and this should dissolve all the gunk and clean the injectors! Read & follow the cans' instruction carefully.
If this cures the problem never let your gas tank get below 1/4 and especially never run it to empty as this is when the gunk and/or water will enter the system!
Hope this helps!
Good Luck!
jackiaria
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Check your fuel pressure, could be a faulty fuel pump. Could also be a cracked spark plug wire or ign coil.

Really need to take to a shop or diagnose yourself. As the saying goes, the prob is "Fuel or Fire"