wont drive forward unless winter button is on

i will assume it is. i would check the axles first for a failed one as it only fails in 2 wheel drive. otherwise, it sounds like a transfer case failure. Roy

no u push button to put into 4 wheel drive and if not in 4 it is rear wheel drive

it is actually in all wheel drive at that point. when out of winter mode, just the fronts drive the car. when in winter mode all 4 drive the car. Roy