GOOD AFTERNOON OR GOOD MORNING MR. THOMAS MATTHES I ALSO HAVE A SIMILAR CONDITION WITH A 1994 AEROSTAR 4.0 L 4x4 ALL ELECTRONIC TRANSFER CASE AWD I FEEL ITS THE TRANSFER CASE MYSELF I COULD BE THE TYPE OF FLUID THIS TRANSFER CASE USES. GM HAS A SLIPPAGE/CHATTE... Login to read more.