How cold you talking? Any codes? TC could be slipping allowing it to stall, VP may be bad. Whats the fule pressure t oyour VP?
I agree, Low stall converters and big injectors will do that. Ive had that problems for years.My truck will do this sometimes if I don't let the temp get over 100 or so before going to drive. I think a lot of it has to do with the low stall of the converter (triple disc dpc). If I have to move it before it gets warm I put it in reverse first and its fine. I have also been told that it is a fairly common problem with vp trucks with bigger injectors.