I recently purchased a 2002 Ram 1500 with a 4.7. When I purchased the truck it thought it had a torque convertor problem. I changed the transmission and torque convertor but still have the same issue. The truck has very little power in drive. 1st, 2nd ad reverse work great. I should mention that it's throwing the code p1698 no transmission bus comm. Is my TCM bad? I'm at a loss.