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Thoughts on 2014/2019 Silverado/ sierra transmission issues?
Posted on 12/15/25 at 10:38 am
Posted on 12/15/25 at 10:38 am
If the dealership replaced the transmission, Will this transmission be better or different design than the failed one?
Should I stay away from them altogether?
I’m looking at 100,000 mile trucks for around $20-$25k
Should I stay away from them altogether?
I’m looking at 100,000 mile trucks for around $20-$25k
8
Posted on 12/15/25 at 11:00 am to Tiger In the Swamp
quote:
If the dealership replaced the transmission, Will this transmission be better or different design than the failed one?
If its the 8 speed I would stay away. More than likely they fixed it without upgraded cooling/torque converters.
Posted on 12/15/25 at 1:31 pm to Tiger In the Swamp
Mine is a 2014 Chevy 4x4 rebuilt the transmission, six speed. Weak point is the sun shell, pretty sure this is a standard upgrade by any rebuild shop.
Read a thread here a good while back, Ole Boy mentioned having several Chevy trucks over his lifetime. He also said the 2014 was the most expensive to keep on the road. I believe he mentioned staying away from the 2014. I raised my hand while reading it.
Read a thread here a good while back, Ole Boy mentioned having several Chevy trucks over his lifetime. He also said the 2014 was the most expensive to keep on the road. I believe he mentioned staying away from the 2014. I raised my hand while reading it.
Posted on 12/15/25 at 2:55 pm to Tiger In the Swamp
quote:
If the dealership replaced the transmission, Will this transmission be better or different design than the failed one?
No. They put the same shitty torque converter in them.
Posted on 12/15/25 at 9:24 pm to REB BEER
quote:
No. They put the same shitty torque converter in them.
Just plan on rebuilding it every 100k. Go ahead and price that in.
Posted on 12/15/25 at 10:06 pm to Tiger In the Swamp
The "repair" on my dads 2018 was a massive flush and refill with a different fluid. He doesn't drive that much so it may last him awhile.
Posted on 12/16/25 at 11:16 am to Tiger In the Swamp
Have it tuned and delete the displacement on demand. That's what causes premature failure by constantly locking and unlocking the converter. Source, Former GMC service manager and his top tech who does transmissions on the side.
Posted on 12/16/25 at 1:58 pm to Bama Shadow
Does everyone feel that the 6 speed is ok? Would you be ok with buying a 2014-2019 with a 6 speed but staying away from 8 speed?
Posted on 12/16/25 at 2:03 pm to Tiger In the Swamp
I'll ask him, but I think his was a 6 speed and died from it. Thats when his tech told him to delete it. No problems after he did that.
This post was edited on 12/16/25 at 2:04 pm
Posted on 12/16/25 at 2:18 pm to Tiger In the Swamp
The 14 that I bought had 30k miles lasted 2 weeks after I got it. Torque converter failed. Immediately traded it in for a 12. This one had100k and I’m about to hit 300 only issue I’ve had is a busted radiator.
I’d stay far away from a 14
I’d stay far away from a 14
Posted on 12/16/25 at 2:32 pm to Metariemobtiger
6 speed or 8 speed?
Posted on 12/16/25 at 3:08 pm to Tiger In the Swamp
My 2021 GMC Sierra's 8 speed transmission went out at 71,000 miles. Luckily I had bought an extended warranty for the first time in my life.
Posted on 12/16/25 at 5:01 pm to Tiger In the Swamp
talked to him, his truck was a 19 with a 6 speed that died. Been fine since deleting it as his son in law has it now.
Posted on 12/16/25 at 8:11 pm to Tiger In the Swamp
I’ll chop my foot off before I ever depend on a GM truck again.
2018 Silverado with 188,000 miles has had $11,000 spent on it the last year, including transmission, whole steering rack, and entire front end.
Fukem
2018 Silverado with 188,000 miles has had $11,000 spent on it the last year, including transmission, whole steering rack, and entire front end.
Fukem
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