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

Go Back   Keystone RV Forums > Keystone Tech Forums > Tow Vehicles
Click Here to Login

Reply
 
Thread Tools Display Modes
 
Old 10-13-2014, 05:47 PM   #1
Tbos
Senior Member
 
Join Date: Jul 2014
Location: Solomons
Posts: 3,874
2013 GMC Sierra Transmission Temp?

I have a 4.8 V-8 with a 4 speed auto transmission with tow haul mode. I have the towing package that includes a cooler. When I tow even in the fall weather the temps rise to about 170f. I'm towing a lightweight TT and combined gross weight is right about 10k which is the limit for the TV. In the Summer the temp went up to about 200. The fluid still looks and smells OK. Only have 12k miles on the truck. Engine temp runs at 212 all the time. What should my transmission temp read? When should I be concerned? Thanks.
__________________
Tom
2019 Alpine 3651RL
2016 F350 CC DRW
Tbos is offline   Reply With Quote
Old 10-14-2014, 07:10 AM   #2
gepaine
Senior Member
 
Join Date: May 2011
Location: Carnation, WA
Posts: 190
In the case of my GMC product, a 2007 Cadillac Escalade, transmission temp runs anywhere from 175 to 215 depending on the steepness of the grade, the length of the grade, and on the outside temp. I have seen 242 on one rare occasion. According to the service manager at the dealership, a warning light will come on "around" 250 (he "thought"), and if it rises much above 250, the engine will shut down. Bottom line: The service manager said I shouldn't be concerned.

I also heard someone say that he thought GM trucks "ran hot".
__________________

2011 Keystone Cougar 24RKS
2007 Cadillac Escalade
Prodigy P2 Brake Controller
Past Trailer:
Forest River R-POD RP-175
Past Tow Vehicle:
2008 Toyota Sienna
gepaine is offline   Reply With Quote
Old 10-14-2014, 07:43 AM   #3
JRTJH
Site Team
 
JRTJH's Avatar
 
Join Date: Mar 2011
Location: Gaylord
Posts: 27,204
There is a lot of pertinent and good information in this thread:

http://keystonerv.org/forums/showthr...on+temperature

(The SEARCH button is your "friend")
__________________
John



2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
JRTJH is offline   Reply With Quote
Old 10-14-2014, 04:52 PM   #4
ImTravis
Senior Member
 
Join Date: Sep 2014
Location: Auburn, Ky
Posts: 147
Quote:
Originally Posted by Tbos View Post
I have a 4.8 V-8 with a 4 speed auto transmission with tow haul mode. I have the towing package that includes a cooler. When I tow even in the fall weather the temps rise to about 170f. I'm towing a lightweight TT and combined gross weight is right about 10k which is the limit for the TV. In the Summer the temp went up to about 200. The fluid still looks and smells OK. Only have 12k miles on the truck. Engine temp runs at 212 all the time. What should my transmission temp read? When should I be concerned? Thanks.
I have a 2014 Silverado with 6-speed auto, and the tranny temp usually runs around 196 when warmed up.. with/without the trailer behind me. I was worried when it once bumped up to 203 for about 5 minutes, then dropped back down, and I've noticed it usually happens during heavy traffic (lots of stop and go), so haven't been concerned.
__________________
TV: 2014 Chevrolet Silverado 1500 4WD (Big Red)
Toy: 2019 Flagstaff V-Lite 30WFKSV (B**** Magnet IV)
ImTravis is offline   Reply With Quote
Old 10-15-2014, 01:17 AM   #5
Fishhawk
Senior Member
 
Join Date: Jan 2012
Location: Arkansas
Posts: 110
Smile

FWIW

My GMC mechanic told me not to worry about trannie temps under 250

I've never seen my trannie temp get over 200
Maybe it does and I just dont know

I check the temp guage regularly throughout a trip
Especially on very hot days and driving in hilly country
__________________
DW of 48 + yrs
Buddy, very spoiled dog
2-bikes
2- guitars
Fishing stuff
Fishhawk is offline   Reply With Quote
Old 10-15-2014, 11:50 AM   #6
tirnanah
Member
 
Join Date: Mar 2014
Location: N/A
Posts: 41
I have a 2009 GMC Sierra 1500, and my tranny temp runs between 170 and 190 towing around 9500 lbs. I've only spiked it once and that was trying to push it backwards up a small hill next to my house (it's a steep rise beside my house and it was soggy wet that day ). The only temp that tends to spike on the truck is my oil temperature.

I have a edge monitor (not tuner!) that was worth it's price and then some for monitoring what's going on with the truck. I highly recommend it.

Thanks,
Doug
tirnanah is offline   Reply With Quote
Old 10-17-2014, 02:08 AM   #7
Desert185
Senior Member
 
Desert185's Avatar
 
Join Date: Jul 2014
Location: Nevada
Posts: 2,695
Quote:
Originally Posted by Fishhawk View Post
FWIW

My GMC mechanic told me not to worry about trannie temps under 250

I've never seen my trannie temp get over 200
Maybe it does and I just dont know

I check the temp guage regularly throughout a trip
Especially on very hot days and driving in hilly country
Due to the radiator cooler configuration, turning the AC off can make a difference on a hot day if the tranny has a tendency to overheat. You probably know that, but I thought it was worth mentioning. One reason I like my NV5600 stick (with FAST coolers).
__________________
Desert185 🇺🇸 (Retired Chemtrail vendor)
-Ram 2500 QC, LB, 4x4, Cummins HO/exhaust brake, 6-speed stick.
-Andersen Ultimate 24K 5er Hitch.
-2014 Cougar 326SRX, Maxxis tires w/TPMS, wet bolts, two 6v batts.
-Four Wheel 8' Popup Camper.
Desert185 is offline   Reply With Quote
Old 10-17-2014, 07:14 AM   #8
Hansel
Senior Member
 
Hansel's Avatar
 
Join Date: Mar 2012
Location: Flowery Branch, Georgia
Posts: 360
I used my brother Chevy 2500HD with the Duramax, and when towing too Myrtle Beach this past summer the transmission temp never went over 192*. Outside temps where normal summer temps in the mid too low 90's, but I have a Ford F-250 Powerstroke and from a former transmission tech that work for Ford broke down the temps like this.

0-220* you are fine
220-230* good for 30 minutes of towing
230-250* only a few minute's
250*+ pull over a idle too cool down
__________________
2015 XXXXXXXXXXX 5th wheel
2000 F-250CC Powerstoke**DECEASED**
2001 F-250 CCSRW 4X4 7.3L Powerstroke
2003 F-350 CCDRW 2X4 7.3L Powerstroke
Hansel is offline   Reply With Quote
Reply

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
Forum Jump

» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3
Disclaimer:

This website is not affiliated with or endorsed by the Keystone RV Company or any of its affiliates in any way. Keystone RV® is a registered trademark of the Keystone RV Company.


All times are GMT -8. The time now is 01:00 AM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2024, vBulletin Solutions, Inc.