When it hits high gear it just revs.. drives fine in 1st,2nd, when it actually goes into high gear it loses power and just revs.. but I can drive it fine in 2nd...is this just a module/sensor or is my trans shot.. has factory auto in it.. replaced the filter and fluid in it. just wonderign if its a module,. if its shot im just going to order a new one..but wasnt sure if there is a module or sensor for high gear or for it to change into high correctly..