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Transmission/traction control issue. P0979 & U0101

w650gb500

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Hey gang, I need some advice. I have a 2022 Gladiator Sport Max Tow with 32,000 miles on it. It’s my daily driver, has never been off-road or trail driven, the only mud it sees is when turning around behind the house! I do tow with it once a month, but honestly it’s a very easily driven DD.

4 days ago I was driving down the road and heard/felt a snapping noise under the truck and immediately the traction control light came on and a warning on the dash to service the traction control. I drove it very easily to my brothers warehouse where we used a code scanner to see what was stored. It was a P0979 code, Shift solenoid “C”. I was able to clear it and drive the car home and it ran fine until yesterday. I drove up the driveway, pulled away from the stop sign and when heading down the road, it did the same thing. Heard/felt a bump/snapping noise and the same lights on the dash. I had my code scanner in the truck and again was able to clear it.

Fast forward to this evening. I was headed to the store, driving up the road at 45mph and the Jeep started to feel like the transmission was slipping. There was a loss of power, lots of warning lights and a long message on the dash. I made it to a local store parking lot where I tried to put it in park , but it just went into a “neutral” and all the lights on the shifter were illuminated yellow. It wouldn’t go into any gear, the shifter wouldn’t move. I shut it off and it would not restart. It wouldn’t do anything! I had to put the emergency brake on in order to keep the truck in one place since the trans wouldn’t go into park. Since I was going shopping at that store any way, I returned to the truck 20 minutes later, plugged in the scan tool and tried to read and clear the codes.

This time it was code U0101(Lost communication with Transmission Control Module). Then on the dash it had the following message.
Jeep Gladiator Transmission/traction control issue. P0979 & U0101 E0B7F291-123F-49A5-A7B8-22F6908B21E5

Jeep Gladiator Transmission/traction control issue. P0979 & U0101 2FFE7165-5564-4247-B594-A96D544900D7

Jeep Gladiator Transmission/traction control issue. P0979 & U0101 264244FF-7E14-4B8C-B130-729988624705


I have a service appointment on 1-2-24 to have it looked at. I drove to the dealership this morning to make the appt based on just those first 2 episodes and then had this BIG one tonite.

Anybody have any similar situation? Any insight on what might be going on is greatly appreciated.
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Hootbro

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Need to leave the code clearing stuff alone and let the dealership deal with it. You may have erased freezeframe data that may have been helpful to the dealership tech.
 

ShadowsPapa

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Agree, stop clearing the codes. Not sure why you are clearing them - it won't make the issues go away and the codes left in place can help a proper tech diagnose and find the issue.

This could be as simple as a bus communication issue, or a transmission control module issue, a connection problem, etc.

Even if someone had similar codes, it won't mean what fixed their issue will fix yours. It's not like the old days of "my transmission slips in low but is fine in reverse" where it's always just a choice between a couple of things.
 
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w650gb500

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I needed to clear them in order to be able to drive the vehicle home. It’s here at the house now and won’t be moving until it’s either towed or driven to the dealership.
 
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w650gb500

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Headed to the dealership to drop it off. Wish me luck, it’s all of 15 miles
 

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jmarchan83

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Hey gang, I need some advice. I have a 2022 Gladiator Sport Max Tow with 32,000 miles on it. It’s my daily driver, has never been off-road or trail driven, the only mud it sees is when turning around behind the house! I do tow with it once a month, but honestly it’s a very easily driven DD.

4 days ago I was driving down the road and heard/felt a snapping noise under the truck and immediately the traction control light came on and a warning on the dash to service the traction control. I drove it very easily to my brothers warehouse where we used a code scanner to see what was stored. It was a P0979 code, Shift solenoid “C”. I was able to clear it and drive the car home and it ran fine until yesterday. I drove up the driveway, pulled away from the stop sign and when heading down the road, it did the same thing. Heard/felt a bump/snapping noise and the same lights on the dash. I had my code scanner in the truck and again was able to clear it.

Fast forward to this evening. I was headed to the store, driving up the road at 45mph and the Jeep started to feel like the transmission was slipping. There was a loss of power, lots of warning lights and a long message on the dash. I made it to a local store parking lot where I tried to put it in park , but it just went into a “neutral” and all the lights on the shifter were illuminated yellow. It wouldn’t go into any gear, the shifter wouldn’t move. I shut it off and it would not restart. It wouldn’t do anything! I had to put the emergency brake on in order to keep the truck in one place since the trans wouldn’t go into park. Since I was going shopping at that store any way, I returned to the truck 20 minutes later, plugged in the scan tool and tried to read and clear the codes.

This time it was code U0101(Lost communication with Transmission Control Module). Then on the dash it had the following message.
E0B7F291-123F-49A5-A7B8-22F6908B21E5.jpeg

2FFE7165-5564-4247-B594-A96D544900D7.png

264244FF-7E14-4B8C-B130-729988624705.jpeg


I have a service appointment on 1-2-24 to have it looked at. I drove to the dealership this morning to make the appt based on just those first 2 episodes and then had this BIG one tonite.

Anybody have any similar situation? Any insight on what might be going on is greatly appreciated.
Well damn.... Literally the same thing you described just happened to me. 2022 max tow 41k miles. Left me stranded a few hours from home too. Had it towed to the nearest dealer and they are telling me that the TCM and transmission valve body needs to be replaced.

Was hoping for something less intrusive as others on the forum mentioned like battery or loose connectors. What was the outcome of yours?
 
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w650gb500

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So I took mine to the dealership and they couldn’t replicate the codes. They said it was a communications error possibly due to a connector behind the glove box that may have a wire that was t totally seated. The tech unplugged and replugged all of the connectors and it’s been good ever since.
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