Safari acts funny.seems to be grabbing.I know Mopar used to have special rear end oil and an additive for the limited slip rear ends.that needed changing occasionally.
Hey mark, The rear-end fluid for your truck is SYNTHETIC SAE 75w90 (no additive) BUT I don't believe from what you described the problem to be in the rear, your truck is an all-wheel drive. I'm pretty sure your problem is in the transfer case, you have an NP4 T/case with a clutch pack in it. what's happening is the old T/case fluid broke down, and not properly lubricating the clutches so they bind. Go to any GM dealer parts and request 2 quarts of AUTO-TRACK 2 and replace the fluid in the T/case Seen this problem many times Good luck
For information, entertainment and / or to perform a mitzvah.
verify the connections the place the plug wires connect with for rust or corrosion and clean them with a cord brush etc.i could be treating the gas equipment with something like STP or Lucas gas therapy , then after using up some tanks of gas exchange the gas clear out on it. additionally make confident that the charging equipment connections a the battery , starter , alternator , and engine block floor and all different grounds are good on it too. wish that enables and better of success.via the way even a reasonably unfastened belt might reason extra gas intake or wheels that at the instant are not balanced precise or sticky brakes or a gas tension or gas regulating valve that's no longer working properly etc. it would desire to no longer harm to have a unfastened test achieved on only in case any blunders codes exist.
