coachmac

Hey Guys,

My 1999 GS300 stopped shifting to 1st and 5th gear. It shifts through all the other gears fine, and drives fine- minus the higher RPM of 4th gear. I have already tried resetting the ECU, with no positive results. I am now thinking that it may be the transmission control module. Does anybody knw where it is located, and how to remove it for inspection? Thanks for any help I can get.

Sam

Hey Guys,

My 1999 GS300 is not shifting into 1st or 5th gear. It does shift through 2-4 very easily and still drives good--just higher rpm. I have already tried resetting the ECU with no change. Does it sound like I need a new tranmission control unit? If so, where is it located on the car. Is it basically plug and play? Thanks for any help I can get.

Sam

Do you happen to know where the TCM is located on the 1999 GS 300?

My 99 GS300 recently does not shift to certain gears. It will shift in gears 1-4, but will under no circumstance go to 5th gear. It also does not downshift when I accelerate from the 60 mph mark and above. And, it will not shift from a higher gear to a lower (like if you would make a turn then slam on the throttle, or if you were at a halt and slammed the throttle, the car will just accelarate at a sluggish bog). Is it possible that this is a ECU problem or a strictly transmission problem?