Go Back   iRV2 Forums > TRAVEL TRAILER, 5th WHEEL & TRUCK CAMPER FORUMS > Trailer Towing and Tow Vehicles Discussion
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
Thread Tools Search this Thread Display Modes
Old 03-04-2012, 02:07 PM   #1
HBRod's Avatar
Join Date: Feb 2012
Posts: 39
RPM' s going uphill?

Hello, I have a 2003 Yukon XL Denali and will be pulling my toyhauler this coming weekend for the first time. It has the 6.0L and my question is....what RPM's should I use going uphill grades?

Rodney 2006 2005 Fleetwood Southwind 32V, Fleetwood Gearbox 230FS, 2004 Fleetwood Storm 30H
HBRod is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 03-04-2012, 07:59 PM   #2
Senior Member
wingnut60's Avatar
Join Date: Aug 2004
Location: Wherever the Suites is
Posts: 3,192
Interesting question--does your tach have a redline on it? If not, the engine is probably computer-controlled to limit rpms to a safe range.

'15 38RSSA Mobile Suites
'05 36TK3 Mobile Suites--retired but not forgotten
'17 F450--trying one more Ford
'09 F450--died, replaced with '10--retired
wingnut60 is offline   Reply With Quote
Old 03-04-2012, 08:02 PM   #3
Registered User

Monaco Owners Club
Join Date: May 2009
Posts: 3,198
No, a modern chevy / gmc doesn't have a redline marked on the tach.
My 04 silverado SS shifts at right around 6000 rpm, but will go to 6400 if I hold it in gear manually.

But torque is best at around 4000. And no way would I push her uphill pulling as load any harder than that.
JimM68 is offline   Reply With Quote
Old 03-04-2012, 09:19 PM   #4
Senior Member
New Horizons Owners Club
Join Date: Oct 2010
Posts: 203
Do you have a transmission temperature gauge?

The transmission will get pretty hot at 4000 rpm in a lower gear. Don't worry about holding highway speeds. Go slow, things will be easier on you and your truck.

Does your truck have a factory towing package? If not you should consider adding a transmission cooler to the truck.

Going down a hill is a whole lot more dangerous than going up. We tow with a Chevy 2500HD and DuraMax/Allison. Our rig grosses 20,500 pounds. Here is what we do when we see a steep downgrade (6% or Better). We slow to 52 MPH, manually downshift to 3rd gear, set the cruse control, and let the engine hold the rig. If we have to apply the brakes we apply light steady pressure. The key to getting down the grade is to get control before you start down.
Happy trails,
The Sundowners:
Jane and Chauncey, Plus the Cats: Backslash, EB, Stripes
chaunclm is offline   Reply With Quote
Old 03-04-2012, 09:24 PM   #5
Senior Member
450Donn's Avatar
Join Date: Jun 2006
Location: Dallas,OR
Posts: 2,649
What is the motors Red line? That is probably where you will be if you want to maintain any sort of speed.
Don and Lorri
2007 Dodge 3500 dually
Resident Dummy.
450Donn is offline   Reply With Quote
Old 03-04-2012, 09:40 PM   #6
Senior Member
bluepill's Avatar
Join Date: Jan 2011
Location: Pensacola, FL
Posts: 2,282
I like to keep an engine at about 80% of redline rpm for maximum pulling. That usually puts me at about maximum horsepower, with lots of coolant circulation. Going much higher than that really gives no benefit, since horsepower is actually going down.
If you can find what rpm your engine is rated for maximum hoursepower, I'd shoot for that.
2008 Itasca Meridian 37H & 2015 Flagstaff T12RBST
2011 & 2012 Len & Pat's "One lap of America"
27K miles & 41 states in 13 months - Woo Woo
Yellowstone Lake 6-1-2012
bluepill is offline   Reply With Quote
Old 03-04-2012, 11:59 PM   #7
HBRod's Avatar
Join Date: Feb 2012
Posts: 39
Thanks for the tips! The Yukon XL Denali max horsepower is at 4000 RPM's . I figure if I hold it around 2500-3000 I will be ok while going uphill. There is no redline in it. Yes, there is a tow package with transmission cooler.
Rodney 2006 2005 Fleetwood Southwind 32V, Fleetwood Gearbox 230FS, 2004 Fleetwood Storm 30H
HBRod is offline   Reply With Quote
Old 03-05-2012, 12:02 AM   #8
HBRod's Avatar
Join Date: Feb 2012
Posts: 39
My concern was keeping the transmission and engine at a safe temp. The XL Denali is rated to tow 8200# and I will be around 6500#

Rodney 2006 2005 Fleetwood Southwind 32V, Fleetwood Gearbox 230FS, 2004 Fleetwood Storm 30H
HBRod is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Finally going FULL TIME adamfolger New Member Check-In 10 08-03-2013 07:08 AM
Going to be in the Seatle/Tacoma area March 2nd - 4th, Breakfast/Dinner anyone? RedneckExpress Just Conversation 0 02-29-2012 12:16 PM
How to go uphill AloraDanin Trailer Towing and Tow Vehicles Discussion 11 02-28-2012 03:26 PM
Florida's booked, going to Missisippi baraff Camping Locations, Plans & Trip Reports 8 02-27-2012 03:03 PM
Anyone going to Sturgis this August? Adamsvr RV Events & Gatherings 8 02-19-2012 11:07 AM

» Featured Campgrounds

Reviews provided by

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 04:07 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.