2016 Silverado Trans temp issues/solutions?

[53boy]

Hey, I tried looking up some info , my main concern is that in heavy stop and go traffic my trans gets up to about 210-215 max. I have the updated lower temp thermostat , Factory cooler . question is, i want to install mishimoto trans cooler. How much will that help with temps? 
 

if I did a thermostat bypass and the mishimoto trans cooler, from my understanding my trans temp will be very low in the winter ? here in PA we get very cold winters. What do you cold climate guys have done to your transmission to help temps?

 

also , fluid changed 30k ago. Will be doing Amsoil fluid and Ppe pan with drain shortly 

 

thanks guys! 

[53boy]

Bump 

[newdude]

Temps when highway driving?  

[53boy]

Normal , 155-165 range 

[53boy]

On 4/4/2025 at 10:08 AM, newdude said:

Temps when highway driving?  

Normal 155-165 range 

[newdude]

1 hour ago, 53boy said:

Normal 155-165 range 

 

 

Hmm.  Stop and go shouldn't really get it that hot unless we are talking like serious stop and go.  Like takes you 20-30 minutes to travel a couple blocks. 

 

Providing you don't have any blockages in your stock cooler, I suppose you could do the Mishimoto but if you do, keep the lower temp TBV in place and don't do a bypass/pill flip that way you still run good temps but gain a lot more cooling area and just over 1/2 a quart added fluid capacity. 

 

I can't speak on the PPE pan but all it seems you gain is the ability to drain and fill easier.  It won't really provide any added cooling other than its ability to hold more fluid that will take just a hair longer to fully heat.     

 

So IMO, your biggest chance of gains (lower temps in heavy traffic) is the Mishimoto.    

Edited April 5, 2025 by newdude

[Buckwild27]

With factory cooler and the bypass, driving through stop and go traffic in Pittsburgh in the summer my truck hit 175° in the winter time you might see 120°. I put the updated thermal bypass valve back in for the winter in my work truck. I do a lot of open road driving and it doesn't get over 100° in a 70 mile drive with the bypass. It's around 140° with thermostat in. These are pan fluid temps.

Edited April 6, 2025 by Homewrecker007

[53boy]

16 hours ago, newdude said:

 

 

Hmm.  Stop and go shouldn't really get it that hot unless we are talking like serious stop and go.  Like takes you 20-30 minutes to travel a couple blocks. 

 

Providing you don't have any blockages in your stock cooler, I suppose you could do the Mishimoto but if you do, keep the lower temp TBV in place and don't do a bypass/pill flip that way you still run good temps but gain a lot more cooling area and just over 1/2 a quart added fluid capacity. 

 

I can't speak on the PPE pan but all it seems you gain is the ability to drain and fill easier.  It won't really provide any added cooling other than its ability to hold more fluid that will take just a hair longer to fully heat.     

 

So IMO, your biggest chance of gains (lower temps in heavy traffic) is the Mishimoto.    

Yes I am talking serious stop and go Philadelphia Roosevelt boulevard driving all the way up the boulevard at rush hour. It’s about a solid 45 minute stop and go drive . Takes me about 45 mins to go 9-10 miles normally , really bad traffic could be 1-2 miles in 25-30 mins which does happen a handful of times a month 

 

thank you for your input! Yeah the Ppe pan I am not set on just yet. Does seem like a good idea but for the price of $300 I’m not sure 

Edited April 6, 2025 by 53boy

[53boy]

7 hours ago, Homewrecker007 said:

With factory cooler and the bypass, driving through stop and go traffic in Pittsburgh in the summer my truck hit 175° in the winter time you might see 120°. I put the updated thermal bypass valve back in for the winter in my work truck. I do a lot of open road driving and it doesn't get over 100° in a 70 mile drive with the bypass. It's around 140° with thermostat in. These are pan fluid temps.

Those are good temps to be at . 

[Buckwild27]

23 minutes ago, 53boy said:

Yes I am talking serious stop and go Philadelphia Roosevelt boulevard driving all the way up the boulevard at rush hour. It’s about a solid 45 minute stop and go drive . Takes me about 45 mins to go 9-10 miles normally , really bad traffic could be 1-2 miles in 25-30 mins which does happen a handful of times a month 

 

thank you for your input! Yeah the Ppe pan I am not set on just yet. Does seem like a good idea but for the price of $300 I’m not sure 

I have the PPE pan on both my trucks. No regrets here.

[Grumpy Bear]

1 hour ago, 53boy said:

Yes I am talking serious stop and go Philadelphia Roosevelt boulevard driving all the way up the boulevard at rush hour. It’s about a solid 45 minute stop and go drive . Takes me about 45 mins to go 9-10 miles normally , really bad traffic could be 1-2 miles in 25-30 mins which does happen a handful of times a month 

 

thank you for your input! Yeah the Ppe pan I am not set on just yet. Does seem like a good idea but for the price of $300 I’m not sure 

 

Problem is a lack of airflow over the cooler. Fan kit? 

[53boy]

1 hour ago, Grumpy Bear said:

 

Problem is a lack of airflow over the cooler. Fan kit? 

Yeah Id guess so . They make fan kits for this exact issue? 

[Grumpy Bear]

1 hour ago, 53boy said:

Yeah Id guess so . They make fan kits for this exact issue? 

Try these guys. Call them. 

 

https://www.improvedracing.com/

[Cupton]

On 4/6/2025 at 4:14 AM, Homewrecker007 said:

With factory cooler and the bypass, driving through stop and go traffic in Pittsburgh in the summer my truck hit 175° in the winter time you might see 120°. I put the updated thermal bypass valve back in for the winter in my work truck. I do a lot of open road driving and it doesn't get over 100° in a 70 mile drive with the bypass. It's around 140° with thermostat in. These are pan fluid temps.

North of Pittsburgh here and just had my  8L90 replaced back in January. I called the dealership to confirm it had the newer thermostat, which they said it did. Last week when ambient temps were in the 50’s-60’s I was seeing trans temps on highway between 150°-165°. Once off the highway and stop and go driving I got up to 185° max.

[Buckwild27]

6 minutes ago, Cupton said:

North of Pittsburgh here and just had my  8L90 replaced back in January. I called the dealership to confirm it had the newer thermostat, which they said it did. Last week when ambient temps were in the 50’s-60’s I was seeing trans temps on highway between 150°-165°. Once off the highway and stop and go driving I got up to 185° max.

I remove thermostat in the spring and put it back in when winter hits,in my 2014 Sierra I use for work. I removed it from my 2018 Sierra because it only get driven in the summer months. And I have the PPE pans on both. So my temps are lower now.