Good Evening all, I have a 2011 Yukon with 124k miles. Today while driving, it acted like it jumped out of gear or shifted to Neutral. Pulled over to side of road and found it would not move in drive, reverse or any manual gears. I shut the vehicle off and restarted it and it shifted into drive and took off. I tried to drive the 2-3 miles home and it did the same thing a couple more times. Each time, turning it off and restarting without sitting for anytime and it would take off again. After restarting, it seemed to shift normally without any slip or stutter. As I got home, and messing with it in the driveway, I did notice a “pump whine” like sound. Fluid is normal range and appears to be normal clearish red color. Just curious if there’s any common problems I should check before calling the transmission shop.
2011 Yukon Transmission issues
- Thread starter YukonF
- Start date
Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
Joseph Garcia
Supporting Member
- Joined
- Aug 2, 2018
- Posts
- 7,593
- Reaction score
- 10,443
Welcome to the Forum from NH.
Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.
I hope that you will become a participating member in the Forum's discussions.
Pics of the truck, please.
I cannot personally assist you with your issue, but other members of this Forum much more knowledgeable than me in this area will chime in.
@NickTransmissions is our resident transmission expert, and he will give his perspective.
Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.
I hope that you will become a participating member in the Forum's discussions.
Pics of the truck, please.
I cannot personally assist you with your issue, but other members of this Forum much more knowledgeable than me in this area will chime in.
@NickTransmissions is our resident transmission expert, and he will give his perspective.
Last edited:
There's lots of common problems associated with these units, including torque converter failure, pump pressure regulator valve wear, valve body check ball wear, TEHCM issues, etc however to what extent you can check to confirm/deny will depend on what you're willing to do and the tooling and equipment you have available to you...Given your symptoms can be either electrical/electronic or mechanical in terms of direct cause, I'd do the following:
1. Scan the ECM and TEHCM for transmission related diagnostic trouble codes and post the codes here, if any are set/stored
2. Conduct a line pressure test to see if the pump is making and sustaining proper line pressures in all range positions (park, reverse, neutral, drive and manual).
Let us know what you come up with for each and we can go from there.
Dropped the pan and changed filter after work today and surprisingly, it seems to have worked. Magnet was “furry” and there was a liitle bit of noticeable fine shavings in pan but nothing crazy and filter was pretty bad. Drove it around for 15-20 minutes afterwards, without any issues. Idk, I’m hesitant. Things don’t usually go so easily for me.
