With these types of transmissions, your problem can be either mechanical or electrical. If you have not surfaced the transmission fluid is dark start there. If in doubt, take the transmission pan off and drain the fluid. Look for bits of metal or darkness, and thick black or gray substance in the bottom of the pan. That's clutch material and or metal bits. If it's clean then it's probably an electrical issue like the vehicle speed sensor or the transmission control module itself. These will generally set a code.
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Wednesday, March 19th, 2014 AT 3:30 AM