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Old 01-09-2013, 12:17 PM   #11
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On our 390rb-40 (340hp) it makes a big difference. it will shift into 6th @50 mph if your foot isn't to the floor. also going up steep hills (contental divide) I take it out of enconomy mode and it downshifts sooner and carries more speed up the hill. I believe I get between 1/2 to 1 mpg more in economy mode. you should read your allison transmisson manual

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Old 01-09-2013, 12:46 PM   #12
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AREA51, thanks I'll have to give it a try in a couple months when I get it out of storage for the winter.

So basically when I hit the mode button it will be put into "economy mode"? Nothing else to do, no menu to scroll through etc?

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Old 01-09-2013, 10:42 PM   #13
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I use the mode button all the time and it get's me into 6th gear quicker. I find that when I have the mode light on I get about .5 MPG gain. Two 800 mile round trips to Florida. First time not in economy mode second time in economy mode and gained .5 MPG

I believe it is pre-programed for economy when it leaves the factory and can be re-programed to a custom set up if the customer wants it done.

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Old 01-10-2013, 07:03 AM   #14
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When you first start out you are in normal operation mode for the transmation. You must always press the mode button to go to economy mode. as others have stated it will make a big difference in your millage. If you get a chance you should attend a allison transmission seminar.
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Old 01-10-2013, 08:57 AM   #15
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Right on, thanks guys for the info. I'll be trying the mode operation first thing in the spring. I always thought that it seemed to hold some gears too long for my liking and it sounds like this should fix that and get better mpg. I was begining to wonder as most guys say they get 10-11mpg and the best I have ever got was 9.8 but typically around 9mpg.

Thanks to all
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Old 01-10-2013, 09:34 AM   #16
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Economy Mode

accumack/62 rightlane
My operators manual for Allison Motorhome Series Transmissions is a 2007 January version of their publication #OM3364EN. At that time it was a GM Company. I have found on line updated versions (a May 2008 and a Decomber 2010) these are both Allison Transmission Company. Pretty much the same book. I could not find any reference to Economy Mode. However, my coach is a 2008 360QS and the chassis was produced in October 2007 and the coach was completed January 2008 and that is why I have the 2007 manual.
I did find in the fliner2008 XC owners manua,l which I recently put on the forum, the following:

on page 7.1

2500/3000/4000 MH Models
General Information
2500, 3000, and 4000 MH series automatic transmissions
have six forward speeds and one Reverse (R)
speed. These transmissions have electronic shift
controls that can be programmed to allow the use of
different numbers of geared speeds. See
Fig. 7.1.
For instance the transmission can be programmed to
operate as a 4-speed, 5-speed, or 6-speed unit in
the "primary" shift mode. If needed, a "secondary"
shift mode can be programmed to provide another
shift configuration to optimize vehicle use under different
operating conditions. To activate a secondary
shift mode, or other special function programmed into
the electronic control unit (ECU), depress the Mode
button. A label just above the Mode button identifies

the special function.

and on page 7.4

The function of the mode button may vary from
vehicle to vehicle. The label above the button
identifies the function.

A light in the upper right-hand corner of the
mode button illuminates when the mode function

is active.

I am attaching the 2007 fliner XC owners Manual and you will find this information in section 4

62 right lane has it right and that is what the information line technician also told me.

However, there was nothing in any on my documentation to tell me what the perprogrammed mode was until you read the part pn page 7.4 #9 and #10.

Good luck
Attached Files
File Type: pdf fliner2007_XC_owners_manual.pdf (3.82 MB, 16 views)

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