Your a lucky one. You should be able to manually shift from 1st > 2nd> drive.
Mines similar, but only does it from 3>4...and only in the first 20 minutes of a ride on a cold day. lol
Ive heard the tranny's are real picky about having JUST the right amount of fluid, if its a little low, you get problems like said
**LOOKING FOR MY JEEP, LAST SEEN IN CT and CURRENTLY HAS CT PLATES
White 1996 Grand Cherokee Laredo, I6 4.0 20% tint all around
**KOR Radiator Support, IRO 3.5" lift, 31/10.5/15" Maxxis Bighorns on 15x8 Cragar Soft 8's, JKS Bar Pin Eliminators, KOR Light Bar, 4 Black KC HiLites, Flowmaster Super 44 with turndown/no tailpipe, OME Steering Stabilizer, Black KOR square rock sliders
**If youve seen it around CT or know about it, PM me