Scan the TCM for fault codes. It is staying in Limp mode, probably because a transmission speed sensor
is faulty (TCM does not know how fast the transmission is spinning), so it defaults to a higher gear. That
way the car can still be driven.
TCM is located under the rain tray at the base of the windshield.
Thomas
Thursday, October 31st, 2013 AT 7:46 PM