I just had the transmission rebuilt by GM under it's drive train warranty and I don't usually drive in 4 wheel drive but here in Missouri it seems we had 12 inches plus yesterday. Once I got out of my driveway it could have been turned off but I left it on. Once I slowed to a crawl to get into a parking spot the slower I went the more it lurched in and out. Almost as if it was an automatic tranny low on fluid.

Is this some sort of fluid problem or something need to be programmed or whatever?

Drives perfect in 2 wheel but put it in 4 wheel and going slow is a nightmare. It's seems to be there straight and slow or turning and slow. Normal speed there's no problems...

Thanks...

G..