Can only go about 35 mph; won't shift to higher gear. If I let van sit for short period(30 mins.), I can drive normally for short period(usually for however long to takes to complete trip), then it repeats malfunction. This started yesterday around 9pm.

SOUNDS LIKE ITS GOING INTO LIMP MODE.GET A FREEE DAIG AND EST FROM AAMCO THEN POST FINDINGS AND COST B4 AUTH REPAIR

Hello, This is Aaron from Grand Pointe Automotive in Grand Blanc. There are numerous things that could cause the condition you are experiencing with your Grand Caravan. We do free computer scans if you would like us to take a look at it. A scan will at least get the diagnostic process started and we can recommend what to do next. We also offer a free shuttle service as well as vehicle pickup and delivery if needed. If you would like to set up an appointment or if you have any questions, please feel free to contact me anytime. 810-603-1900. Thank you, Aaron Klosterman Grand Pointe Automotive 810-603-1900