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

Notices

Reply
 
Thread Tools Display Modes
 
Old 01-13-2019, 03:46 PM   #51
laedge
Junior Member
 
Join Date: Sep 2018
Location: Etters
Posts: 2
We went from a 40' Class A to a 5th Wheel and knew the GMC would be the right vehicle. No issues pulling "Blue" and comfortable ride. Congratulations on the upgrades.
__________________

__________________
Lewis

2019 Keystone Raptor 426TS "Blue"
GMC 3500HD Denali 6.6L Duramax TD, DRW "The Dark Knight"

laedge is offline   Reply With Quote
Old 01-13-2019, 04:07 PM   #52
MarkEHansen
Senior Member
 
MarkEHansen's Avatar
 
Join Date: Oct 2018
Location: Sacramento
Posts: 330
My only complaint with the GMC 3500 HD is the rough ride. I moved up from a 2018 GMC Yukon Denali and the ride is much rougher.

We purposely got lots of capacity in the hope that we move to a much larger/heavier trailer in the future, but we're wondering if there is something we can do to soften the ride in the meantime which won't preclude the towing of our current 8,800 lb gross weight trailer.
__________________

__________________
2019 Cougar Half Ton 26RBSWE - "Bertha"
2019 GMC Sierra 3500 Denali HD 6.6L Duramax TD, CC, 4WD, DRW - "Mr. Beefy"
MarkEHansen is offline   Reply With Quote
Old 01-13-2019, 04:30 PM   #53
Javi
Senior Member
 
Javi's Avatar
 
Join Date: Aug 2012
Location: Waco, Tx
Posts: 3,404
Quote:
Originally Posted by JRTJH View Post
The part I bolded is the reason why overfilling can damage the tank. As DEF freezes, it expands. Overfilling the DEF tank can cause the damage. It only occurs in locations where the temperatures are cold enough to actually freeze the DEF solid. I would make a guess that's in places where the temperature is below zero for days and days and on trucks that sit outside, unprotected from the temperatures. Our truck is in the garage "at home" but if we go to visit someone overnight or take a trip and stay overnight, we usually wind up parked outside... RAM and GM trucks "may" (I don't know) a means to create expansion room in the way their DEF tanks are molded. On Fords the tank can be "filled to the very top with no air gap or room for expansion"...
DEF does freeze at -11C or 12F... Ford has a heater in the tank... I know this because it was just replaced under warranty which was extended because of a problem with the heater..

Down here 12F is pretty rare so I have little knowledge of the operation of the heater other than a warning light came on when it failed..

Wonder if it works with the block heater if the truck is so equipped.
__________________
'15 Cougar 333MKS
Plenty of truck...
Javi is online now   Reply With Quote
Old 01-14-2019, 08:16 AM   #54
JRTJH
Site Team
 
JRTJH's Avatar
 
Join Date: Mar 2011
Location: Gaylord
Posts: 14,779
Quote:
Originally Posted by Javi View Post
DEF does freeze at -11C or 12F... Ford has a heater in the tank... I know this because it was just replaced under warranty which was extended because of a problem with the heater..

Down here 12F is pretty rare so I have little knowledge of the operation of the heater other than a warning light came on when it failed..

Wonder if it works with the block heater if the truck is so equipped.
Up here, 12F is a "normal winter temperature" and well below that is typical from December through March. The DEF heater is in the DEF tank, the block heater is in the engine block, on the passenger's side, rear of the motor. As I understand it, ALL 6.7L Ford diesels leave the engine facility with the block heater in the freeze plug port. The $75 option is the wiring that runs from the freeze plug to the front lower grill opening on the truck. The two, Block heater and DEF heater are not related and in actuality, the DEF heater is 12 VDC. The block heater is 120VAC.

As I understand the DEF heater, it is a "black cylinder" inside the DEF tank that contains the level sensors, the heat element, a thermostatically control temperature sensor and a filter assembly. You can read about it here: https://www.accuratediesel.com/6-7l-...ef-heater.html

I am aware of the recall, but so far, I've never had an issue with the DEF tank or heater. I do park in the garage, so my truck is only outside when driven or if we go on a trip. Typically, if it's winter, we take the DW'S SUV rather than the truck. I guess what I'm saying is that my DEF has never frozen, so I don't know if the heater works or not, but I've never seen a "fault light" or an OBD scan that indicates a problem with that system.
__________________

__________________
John



2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
JRTJH 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

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 08:23 PM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2019, vBulletin Solutions, Inc.