Evan Rocks Posted May 7, 2021 Share Posted May 7, 2021 (edited) My 2015 pinnacle with mdrive 12 speed is getting to a higher gear like say 7th and going into a kind of limbo causing me to have to stop and start over again. What could be causing this? Edited May 7, 2021 by Evan Rocks Misspelled word Quote Link to comment Share on other sites More sharing options...
Mackpro Posted May 7, 2021 Share Posted May 7, 2021 https://static.nhtsa.gov/odi/tsbs/2015/SB-10082931-0699.pdf Quote Link to comment Share on other sites More sharing options...
Evan Rocks Posted May 7, 2021 Author Share Posted May 7, 2021 (edited) Mackpro, it gets to 7th, no grinding. It's not always 7th either, just goes into limp mode and stops shifting. Edited May 7, 2021 by Evan Rocks Added content Quote Link to comment Share on other sites More sharing options...
fjh Posted May 8, 2021 Share Posted May 8, 2021 17 hours ago, Evan Rocks said: Mackpro, it gets to 7th, no grinding. It's not always 7th either, just goes into limp mode and stops shifting. We have had quite a few with shift lid issues as well there is a stop plate that breaks from time to time on one of the shift rails If its ether of these issues its not something your going to fix on your own The dealers are pretty much hardwired to this new stuff! Quote Link to comment Share on other sites More sharing options...
kt_Engineer Posted May 8, 2021 Share Posted May 8, 2021 23 hours ago, Evan Rocks said: Mackpro, it gets to 7th, no grinding. It's not always 7th either, just goes into limp mode and stops shifting. Check your ABS sensors on steer and drive axles. Transmission is looking for output shaft sensor along with ABS sensors to figure out vehicle speed and needed gear shift. If one of the sensor is loosing signal intermittently then transmission might go into limp mode. 1 Quote Link to comment Share on other sites More sharing options...
fjh Posted May 9, 2021 Share Posted May 9, 2021 Good call KT! Would there not be a ABS code coming up with this issue though? Quote Link to comment Share on other sites More sharing options...
colebyrne Posted August 25, 2021 Share Posted August 25, 2021 Hello friend! I have a small car business myself, so I constantly use engineering services. I hope I can help you. On the website Engre.co you can find engineering services, including those that you care about. I usually cooperate with Tucana, if I have heard of such a thing. In general, try to go and take a look, maybe you can really find what you are looking for. All the best! Quote Link to comment Share on other sites More sharing options...
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