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I have a 1996 Grand Caravan with 3.3 L, 4 speed trans, 110,000 miles. Trans going into limp mode and check engine light. Code read P0700 and P0750 and then had the shop read the TCM codes and it read code 41. Replaced the fuild and filter, nothing in the pan, change the solenoid pack. Still same problem. Any other ideas? Checked all wire conectors and ground strap, all seem good. Could it be a bad TCM? Thanks