three times today; at light throttle; with no load, the tow/haul mode light and trans temp light simultaniously came on the 48re down shifted 1 gear lower, then after about 5-8 seconds, the lights went out and the trans upshifted and ran fine. the third time was this evening after changing trans fluid and the engine and trans were still cold. the first two times were after driving about 12-15 miles of 2 lane state routes that are flat.i am 99.999999% sure this is electrical. but what electric component could it be? in the tow mode? ( which i wasnt useing) the trans temp sensor? or a bad ground connection in general? i know there are no tech bullitins out because this doesnt happen that frequently. any help would be great. thanks.
went to dealer and computer says hi voltage at temp sending unit. isnt it odd that its intermitent not constant? my experience with sensors has always been its working or its not working. not hit and miss.
