
	Already a member? Login here. If not, Register Today! \| Help

Newest | Active | Popular | RVing FAQ

Forum Rules | Forum Help and Support | Contact

Open Roads Forum > Tow Vehicles

This Topic Is Closed | Print Topic | Post New Topic |

Sponsored By:

rowekmr

Chicago

Senior Member

Joined: 11/22/2007

View Profile

Good Sam RV Club Member

Offline

Posted: 05/24/12 02:55am

Link | Print | Notify Moderator

On my previous 99 Suburban 2500 7.4L I can recall the fan never coming on also. I would tow my trailer with the AC on and never noticed any too hot coolant temps. On this 96 version I notice it comes on at a certain temperature not necessarily only when the AC is on.
On a sidenote BenK does the trans fluid get cooled only in the external trans cooler or does it go through the engine radiator also?

* This post was edited 05/24/12 05:58am by rowekmr *

03 Ford Excursion Ltd 6.0L
00 Acura RL
08 Jayco 31 BHDS G2
96 Regal 258 Commodore
1 Wife 3 kids

sunline1

Northeastern Pa

Senior Member

Joined: 07/14/2006

View Profile

Good Sam RV Club Member

Offline

Posted: 05/24/12 04:30am

Link | Print | Notify Moderator

rowekmr

The engine "oil" goes into a cooling section if you will in the Radiator.

on my 97, i there is seperate transmission cooler in front of the radiator, which is normal.

Sunline

Trail-Mate

Frederick, MD

Senior Member

Joined: 01/22/2004

View Profile

Good Sam RV Club Member

Posted: 05/24/12 06:09am

Link | Print | Notify Moderator

My old 93 K2500 had a oil cooler like the one Ben posted in his Picture on the drivers side and did not have a trans cooler from the factory. I moved the oil cooler down and installed a B&M trans cooler with fan above the oil cooler. The Aux fan would come on with AC. If temps are an issue and you have a factory copper 4 core radiator replace it with a good 4 core aluminum one. This will cool much better. I made this change on the 93 and made a big difference. The Trans cooler with fan helped keep it cool when towing at slower speeds when the trans TC was unlocked and creating heat. It also supplemented the other two fans.

1997 Ford F250 Extended Cab, 7.3 Diesel, 8 foot bed.
Reese 16K Hitch
(Moved into Shed) Hensley Arrow
Jordan Brake Controller, Hensley TruControl Gold Shelved.
Open Range 5th Wheel, Roamer RF392 BHS

Happy Camping !!

bucky

Eastern Shore of MD

Senior Member

Joined: 05/07/2003

View Profile

Posted: 05/25/12 04:31am

Link | Print | Notify Moderator

My electric fan has only come on rarely, and only under extreme temps. It is not supposed to come on just with the AC. Earlier GM vehicles with less sophisticated electronics did use a temp sensor for the condensor fan, but on the 2500 and 3500 trucks this is an auxilliary cooling fan, not a condensor fan.

99 K3500 DUALLY 07 JAYCO 345 BHS

Perrysburg Dodgeboy

Perrysburg, Ohio USA

Senior Member

Joined: 12/06/2003

View Profile

Posted: 05/25/12 08:18am

Link | Print | Notify Moderator

Don't know how the GM's work but every Chrysler I have had and my DD Volvo the fan comes on with the AC. They also stay on after the vehicle has been turned off. Heck on the Volvo the fan will cycle on and off up to an hour after the it's been turned off and sitting in the driveway. Was told by Volvo SM that it's normal.

Don

* This post was edited 05/25/12 02:02pm by Perrysburg Dodgeboy *

Perrysburg Dodgeboy
2004 Dodge Ram 2500 Quad Cab SLT Cummins HO
2005 Keystone Cougar 304 BHS
Chrysler the only one to pay back 100% of their loans from the Government. *The Old Car Company" still owes 1.6 billion. Is that better Chuckles

dfb

gardnerville

Senior Member

Joined: 09/29/2005

View Profile

Offline

Posted: 05/25/12 09:52am

Link | Print | Notify Moderator

Connect a wire to the battery hot side and run it to the fan... If the fan comes on, the trouble is elsewhere, like a solenoid or a bad ac switch...if not then it's a bad fan motor.