Rear Axle System Off

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NELLY1947

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Can anyone shed some info on this. It's the 3rd or 4th time I start the truck and get the message on the cluster " Rear Axle System Off". I play with the drive and mode controls and it only erases when I hit the "check" button on the steering wheel. All seems to be normal. But it's concerning. Any info???
 

Big Mama

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Still under warranty? It sounds like the system is turning off the locking differential.
 
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djnice

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On other gm cars with elsd this can be caused by misfire, old batery, voltage issues, alternator, ground issues, etc.
 
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NELLY1947

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Still under warranty? It sounds like the system is turning off the locking differential.
100% only has 7000 miles bought in December 2023 abd also gas 120 mile whatever year extended.
But thanks for the info. That could be it.
 

BK613

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I have a 2023 Chevy Tahoe Z71 with 19,000 miles. Whole driving on freeway I got a service engine light with four notifications. One was Service ECS, Forward Collision System Unavailable, Service Traction Contol and Rear Axle System Off. I drove it 15 miles to nearest dealership as it was vibrating slightly. Dealer said it was throwing a code about a cylinder 3 misfire. Three weeks before they could even look at it. They were surprised as its a 6.2 gas engine and not the 5.3 which they said had lifter issues! Super frustrating. Anyone have any ideas as I will probably be down with the vehicle for a month.
 

BK613

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I have a 2023 Chevy Tahoe Z71 with 19,000 miles. Whole driving on freeway I got a service engine light with four notifications. One was Service ECS, Forward Collision System Unavailable, Service Traction Contol and Rear Axle System Off. I drove it 15 miles to nearest dealership as it was vibrating slightly. Dealer said it was throwing a code about a cylinder 3 misfire. Three weeks before they could even look at it. They were surprised as its a 6.2 gas engine and not the 5.3 which they said had lifter issues! Super frustrating. Anyone have any ideas as I will probably be down with the vehicle for a month.

IMG_4967.jpegIMG_4965.jpeg
 

Yeloshak

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@BK613 - same issues on my 2023 Suburban Z71 with the 6.2L. I also have a "trailer brake controller unavailable" in addition to the same 4 warnings as you. Any luck so far?
 
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Fless

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BK613 - same issues on my 2023 Suburban Z71 with the 6.2L. I also have a "trailer brake controller unavailable" in addition to the same 4 warnings as you. Any luck so far?

He may not see your post unless you tag him. Type the "@" key, then start typing his username. Pick it from the dropdown list and then ask your question. Tag like this: @Yeloshak
 

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