Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×


Reply
 
Thread Tools Display Modes
Old 01-20-2017, 03:03 PM   #161
2007 WildCat 32QBBS
 
18CrewDually's Avatar
 
Join Date: Jul 2011
Location: NJ
Posts: 2,349
Quote:
Originally Posted by jestoy7 View Post
Hey man, what year is your Tahoe?
His profile says 2014 Z71
__________________
*Current: 2005 Ford F350 Crew Cab Dually 6.0 diesel 4x4*
*Retired: 1987 F350 Crew Cab Dually 6.9 turbo diesel
2007 Forest River WildCat 32QBBS
18CrewDually is offline   Reply With Quote
Old 01-23-2017, 01:29 PM   #162
Senior Member
 
Join Date: Jul 2015
Location: Where the stars at night are big and bright
Posts: 970
As my profile says 2014 Z71 4WD. It came with the tow package installed (integral brake controller, heavy rear suspension, tranny cooler, oil cooler, integrated trailer sway monitoring and control). It does very well for an SUV, plus the cats get plenty of room to ride in confort, something they wouldn't have with a pickup truck. I'm towing around 6K to 6.5K when we go on vacation to New Mexico every year. Tow rating is 8200#. I watch the speed and don't tow faster than 65 mph even on the freeway. Really steep hils are a bit slow and things heat up on a long grade, but killing the a/c really helps a lot. I shut it off at the base of a long up hill grade and turn it back on when we reach the top.
__________________
2015 Palomino SolAire 20RBS
2022 Silverado 2500HD LT Duramax 4WD
2015: 18 days; 2016: 21 days; 2017: 19 days; 2018: 26 days; 2019: 8 days; 2020: 0; 2021: 10 days.
elchilero53 is offline   Reply With Quote
Old 01-23-2017, 03:30 PM   #163
Senior Member
 
northstar1960's Avatar
 
Join Date: Feb 2015
Location: in my new 29hfsxlr
Posts: 1,658
Quote:
Originally Posted by jestoy7 View Post
Thanks everyone for the input! I'll look into the lower temp thermostat or even drilling a pin hole into my new one. I'm also considering pulling out my radiator and checking it out. The temps in Florida are no joke and we don't want to be hindered by it.
T stats are cheap . a cooler one is better then drilling a hole . you can also add a external transmission oil cooler . i' tow from Florida to the Rockies twice every year . with the coolers that come all ready plus the one i added and the cooler t-stat i never over heat . you shouldn't have to pull the radiator unless you think you have obstructions . an extra trans oil cooler would be the best bang for your buck .
northstar1960 is offline   Reply With Quote
Old 01-23-2017, 04:13 PM   #164
Junior Member
 
Join Date: Jan 2017
Posts: 29
Quote:
Originally Posted by northstar1960 View Post
T stats are cheap . a cooler one is better then drilling a hole . you can also add a external transmission oil cooler . i' tow from Florida to the Rockies twice every year . with the coolers that come all ready plus the one i added and the cooler t-stat i never over heat . you shouldn't have to pull the radiator unless you think you have obstructions . an extra trans oil cooler would be the best bang for your buck .

Hey, I appreciate it. I did add a tranny cooler that goes in series with the little OEM one. It helped the tranny temps tremendously (about 30 degrees throughout). It's the coolant creeping up past 210 that I'm wondering about. Maybe it's fine to creep up some and I just have to watch it to not get out of hand.


Sent from my iPhone using Forest River Forums
jestoy7 is offline   Reply With Quote
Old 01-23-2017, 04:34 PM   #165
Senior Member
 
northstar1960's Avatar
 
Join Date: Feb 2015
Location: in my new 29hfsxlr
Posts: 1,658
Quote:
Originally Posted by jestoy7 View Post
Hey, I appreciate it. I did add a tranny cooler that goes in series with the little OEM one. It helped the tranny temps tremendously (about 30 degrees throughout). It's the coolant creeping up past 210 that I'm wondering about. Maybe it's fine to creep up some and I just have to watch it to not get out of hand.


Sent from my iPhone using Forest River Forums
210 isn't bad for coolant or even a little more when pulling grades etc . keeping tranny cool and engine oil are the two biggies .
northstar1960 is offline   Reply With Quote
Old 01-26-2017, 05:57 AM   #166
Senior Member
 
Join Date: Aug 2016
Posts: 108
The easiest thing to do is change your fluid twice a year and your filter once a year and run synthetic fluid and stop worrying so much about your tranny temperature. The physical transmission can handle the heat it's just cheap fluids that start to break down, synthetics have much better ability to handle the heat. $65 for 6 quarts of ATF is cheap insurance.

When I plowed and towed, I changed the fluid every fall before plow season and the fluid and filter every spring before towing season. I would get trans temps of close to 250 plowing with zero issues. I had to have the transmission pulled down around 215K miles because my reverse band broke (had nothing to do with heat or fluid) the 65 year old tech( been rebuilding transmissions since the 70's) asked if I had already replaced the tranny because it was way to clean and had to little wear to have that many miles on it. I told him I used mobil one and changed it twice a year.
BigLou80 is offline   Reply With Quote
Old 01-26-2017, 11:03 AM   #167
Senior Member
 
Join Date: Sep 2016
Location: SE Michigan
Posts: 2,024
Reading along with buttered popcorn in hand....

My only comment is, use the best transmission fluid you can purchase and change it often, people tend to ignore the transmission until it craps out and then it's always expensive....and...

If you have an Allison transmission, only use Allison transmission fluid and change the filter and fluid on the recommended change intervals. Allison's like clean, fresh fluid and filters.
SidecarFlip is offline   Reply With Quote
Old 03-22-2017, 06:01 PM   #168
Senior Member
 
Join Date: Mar 2017
Posts: 281
12.7 quarts of amsoil in mine this month.
mj0528 is offline   Reply With Quote
Old 03-22-2017, 07:33 PM   #169
Senior Member
 
Join Date: Sep 2016
Location: SE Michigan
Posts: 2,024
Quote:
Originally Posted by mj0528 View Post
12.7 quarts of amsoil in mine this month.
If it's an Allison, you are making a mistake. I've dealt with Allison in the past and the first thing they do when there is a transmission issue is do a fluid analysis and if it's not Allison specified fluid and filters, they get real crabby, real fast.
SidecarFlip is offline   Reply With Quote
Old 03-22-2017, 07:51 PM   #170
Senior Member
 
Join Date: Mar 2017
Posts: 281
It's 6L80e
mj0528 is offline   Reply With Quote
Old 03-22-2017, 07:51 PM   #171
Senior Member
 
Join Date: Mar 2017
Posts: 281
Wish it was an Allison


It's in my truck and the minivan. Can really tell a diff in shifting
mj0528 is offline   Reply With Quote
Old 07-28-2017, 11:33 PM   #172
Senior Member
 
Join Date: Jul 2015
Location: Where the stars at night are big and bright
Posts: 970
Well, I sold the Tahoe and bought a 2017 Silverado 1500 with the 6.2L V8 and the 8-speed tranny. We took a drive today in 102 - 104 degree heat through lots of hills. Temp held steady at about 181 degrees. If the temp rose to 185, it quickly went back down to 181, which I thought was very interesting. Cooling system? It does have an external tranny cooler as part of the tow package.
__________________
2015 Palomino SolAire 20RBS
2022 Silverado 2500HD LT Duramax 4WD
2015: 18 days; 2016: 21 days; 2017: 19 days; 2018: 26 days; 2019: 8 days; 2020: 0; 2021: 10 days.
elchilero53 is offline   Reply With Quote
Old 07-29-2017, 01:17 AM   #173
Senior Member
 
Join Date: Jul 2017
Location: California
Posts: 7,616
I installed one of these on my Silverado. Temp never gets over 180 even towing my 7K# boat up to Lake Tahoe. Before the cooler was installed, I got close to 230.



Made all my stainless lines too.
babock is offline   Reply With Quote
Old 07-29-2017, 03:28 PM   #174
Senior Member
 
Join Date: Apr 2016
Posts: 600
Quote:
Originally Posted by babock View Post
I installed one of these on my Silverado. Temp never gets over 180 even towing my 7K# boat up to Lake Tahoe. Before the cooler was installed, I got close to 230.



Made all my stainless lines too.


Dang it 230 is getting up there even with the synthetic and blends fluid. I have seen mine hit 223 on a 19% 9 mile pull in upper 90 degree NC heat. When i crested the pull she started cooling down quick along with radiator temp it was about the same. I did not notice any fans turning on so it must have not hit that temp yet. I am not sure what that temp is for the extra fans to turn on.
pbandrb is offline   Reply With Quote
Old 07-29-2017, 03:53 PM   #175
Senior Member
 
Join Date: Jul 2017
Location: California
Posts: 7,616
Quote:
Originally Posted by pbandrb View Post
Dang it 230 is getting up there even with the synthetic and blends fluid. I have seen mine hit 223 on a 19% 9 mile pull in upper 90 degree NC heat. When i crested the pull she started cooling down quick along with radiator temp it was about the same. I did not notice any fans turning on so it must have not hit that temp yet. I am not sure what that temp is for the extra fans to turn on.
Yep....I immediately changed the fluid after I saw that.

My 1/2T didn't come with the trans temp on the dash so I sent the instrument cluster out to a shop that put one in. Was best investment I ever made.

My truck only has the engine fan.
babock is offline   Reply With Quote
Old 07-29-2017, 03:57 PM   #176
Senior Member
 
Join Date: Apr 2016
Posts: 600
Quote:
Originally Posted by babock View Post
Yep....I immediately changed the fluid after I saw that.



My 1/2T didn't come with the trans temp on the dash so I sent the instrument cluster out to a shop that put one in. Was best investment I ever made.



My truck only has the engine fan.


My 2015 GMC Sierra has it on the DIC but I had to Enable/turn it on. I think i have the one radiator fan then a auxiliary fan that will turn on under load. It was my first time up the grade with 7,000 lbs the 5.3L handled it perfect
pbandrb is offline   Reply With Quote
Old 07-29-2017, 08:03 PM   #177
Senior Member
 
Join Date: Jul 2015
Location: Where the stars at night are big and bright
Posts: 970
Quote:
Originally Posted by pbandrb View Post
My 2015 GMC Sierra has it on the DIC but I had to Enable/turn it on. I think i have the one radiator fan then a auxiliary fan that will turn on under load. It was my first time up the grade with 7,000 lbs the 5.3L handled it perfect
That's what I had to do to mine as well. I have it right behind the Trailer Brake Gain Readout monitor (which has to be enabled, too. The newer models of GM trucks and SUVs have twin fans. My old 2014 Tahoe with the 5.3 and 6-speed had twin fans side-by-side. When the temps rise, you can hear them kick on - they are pretty loud unless you have active noise management, then you don't hear very much noise if anything at all.

The new 8-speeds apparently operate at higher temps. I learned from the GM-Truck Forum that the 8-speeds may have an internal thermostat designed to maintain a specific temperature even with an external cooler but no one seems to be able to confirm this. The 8-speeds use synthetic transmission fluid much like the current production 6-speed trannies.

My tranny temp fluctuations occurred while climbing a hill. We'll see how it does under a load pulling the trailer later this summer.
__________________
2015 Palomino SolAire 20RBS
2022 Silverado 2500HD LT Duramax 4WD
2015: 18 days; 2016: 21 days; 2017: 19 days; 2018: 26 days; 2019: 8 days; 2020: 0; 2021: 10 days.
elchilero53 is offline   Reply With Quote
Old 03-30-2019, 08:24 AM   #178
Junior Member
 
Join Date: Aug 2018
Posts: 4
Quote:
Originally Posted by pbandrb View Post
My 2015 GMC Sierra has it on the DIC but I had to Enable/turn it on. I think i have the one radiator fan then a auxiliary fan that will turn on under load. It was my first time up the grade with 7,000 lbs the 5.3L handled it perfect
I have a 16' silverado 1/2. How does one go about turning the aux fan on?
__________________
2016 silverado 1500 all star
2003 jeep wrangler X
#scaleobsession
scale obsession is offline   Reply With Quote
Old 03-30-2019, 08:31 AM   #179
Senior Member
 
Join Date: May 2017
Posts: 5,712
Quote:
Originally Posted by scale obsession View Post
I have a 16' silverado 1/2. How does one go about turning the aux fan on?
As the post you're replying to is almost 2 years old, and this thread is 8 years old, I'm not sure if you'll get a response.
TheWolfPaq82 is offline   Reply With Quote
Old 03-30-2019, 11:40 AM   #180
Senior Member
 
Join Date: Jul 2015
Location: Where the stars at night are big and bright
Posts: 970
Quote:
Originally Posted by scale obsession View Post
I have a 16' silverado 1/2. How does one go about turning the aux fan on?

It comes on automatically when temps start rising. You can tell it is on when the roar from under the hood increases while pulling a load.
elchilero53 is offline   Reply With Quote
Reply

Tags
transmission temperature

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by Forest River, Inc. or any of its affiliates. This is an independent, unofficial site.



All times are GMT -5. The time now is 06:39 AM.