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2014 Silverado 6L80E transmition thermostat

Binder49

By Binder49
in Troubleshooting & Recalls

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Binder49 Enthusiast

Binder49

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Good Morning. I recently purchased a 2014 Silverado with a 6L80E transmition. It has a factory transmition cooler. I have been reading about bypassing the transmition thermostat to extend the life. My truck has 142,00 mile on it. It is a daily driver, and does little to no towing except for occasionly a light trailer. Would bypassing the thermostat really do anything to help exend the life of my transmition. Thanks

Binder49 Enthusiast

Binder49

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Posted (edited)

I also forgot to mention I live in North Dakota where the winters are COLD!!! Would that have any effect on the trans with the thermostat bypassed.

Edited by Binder49
Grumpy Bear Senior Enthusiast

Grumpy Bear

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Posted
47 minutes ago, Binder49 said:

Good Morning. I recently purchased a 2014 Silverado with a 6L80E transmition. It has a factory transmition cooler. I have been reading about bypassing the transmition thermostat to extend the life. My truck has 142,00 mile on it. It is a daily driver, and does little to no towing except for occasionly a light trailer. Would bypassing the thermostat really do anything to help exend the life of my transmition. Thanks

 

Yes, but not as long as it would have had this been done early on. Is this a V6 or a V8? 

 

29 minutes ago, Binder49 said:

I also forgot to mention I live in North Dakota where the winters are COLD!!! Would that have any effect on the trans with the thermostat bypassed.

 

Never hurt automatics without thermostats since the early 60's. Not even the early 6L80's pre 2014 that hadn't one. I've run either bypassed or the GM low temp unit for most of my 2015's 177K miles. Live in northern Illinois. Gets minus mid 20's a few days each year here. 

Grumpy Bear Senior Enthusiast

Grumpy Bear

Posted
Posted
6 minutes ago, Binder49 said:

Is there a down side to doing this. The kit I am looking at is the Superior STL010

 

Not a single one. 

 

21 minutes ago, Binder49 said:

It is the 5.3 v8

 

IMO, biggest fox in your henhouse is the converter. 

 

Read: 

 

Prevent Problems with a 6L80/90 Converter Upgrade | Sonnax

 

Talk to: (Or Circle D)

 

CADILLAC, CHEVY, GMC Torque Converter 77-JMBXSD (floridatorqueconverters.com)

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  • 2 months later...
Binder49 Enthusiast

Binder49

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Just an update. I had the trans fluis flushed, and without the bypass the warmest it has gotten is 145 degrees

64BAwagon Senior Enthusiast

64BAwagon

Posted
Posted (edited)

Never been a fan of flushes. In my opinion a simple pan drop and filter replacement is best. If your concerned about the fluid than have it tested and while the pan is down add a Superior products drain plug to it. Assuming the analysis comes back with nothing glaring you could do an easy drain and fill and have a pretty high percent of new fluid. 

 

Just as a reference,  When I went through the Allison maintenance training they considered a drain and fill with a filter change along with 2 more spill and fills to be a complete changeover. If you were switching from Dex3 to a TES synthetic they stated that this method would be equivalent to a complete changeover and was suitable for moving to the synthetic service intervals. 

Edited by 64BAwagon
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