Ive had my 2013 tc for almost a year and I've had some issues with the van working too hard while climbing hills at speed, usually around 60mph and above, I had the trans replaced last fall after a trip out west where the trans kept slipping while climbing hills. I haven't taken it out west since but I have gone on a few local trips, the trans doesn't slip anymore, but it still feels like it doesn't have the power to climb big hills going 60 or 70 mph and the car will jolt hard when it tries to shift down and occasionally will rev up to 6k or 7krpms when driving above 70. should I just put the hazard lights on when on big hills and take it slow? can somebody give me some insight? I just don't want to explode while driving a mountain pass