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Topic: 5 to 6 speed TCM reprogam (Read 1130 times) previous topic - next topic
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5 to 6 speed TCM reprogam

Yahoo Message Number: 10169
Today I had the TCM reprogramed to allow the 6th speed in my 5 spd Allison to be used. It took about 10 minutes with a Tech II and a Vin# of a medium duty with a 6 spd. Before the reprogram my RPM at 65 was approximately 2300 in fifth. Now it is about 1900 in sixth. It is quieter in the cab and the shifts seem smoother. When it shifts down for passing it will go directly to fourth. I disconnected the Edge for reprograming so as not to confuse the issue. I will reconnect it tomorrow and take it for another ride. I am looking forward to our trip to Florida with this setup. Hopefully I can realize some better mileage as well. My truck is an 06.
Denny

Re: 5 to 6 speed TCM reprogam

Reply #1 –
Yahoo Message Number: 10170
Good Report. Do you know what your rear axle ratio is?
Best
Ron Hall

Re: 5 to 6 speed TCM reprogam

Reply #3 –
Yahoo Message Number: 10172
I was thinking of getting the Edge CTS for my 2005, don't think I can do the 6th speed. Does the Edge work good for you? What setting to you run and did it help in fuel economy? I know performance will be enhanced. Do you have an EGT sensor? I understand it is fairly simple to hook up.

Re: 5 to 6 speed TCM reprogam

Reply #4 –
Yahoo Message Number: 10173

Do you mind sharing the cost associated with the reprogram. I also have an '06 chassis, but will have to look at the build codes to determine if mine is a candidate.

Roger

Re: 5 to 6 speed TCM reprogam

Reply #5 –
Yahoo Message Number: 10174
The tech did it after work and asked for 60 bucks but I chipped in some dinner money as well.
Denny

Re: 5 to 6 speed TCM reprogam

Reply #6 –
Yahoo Message Number: 10175
Ron:
I have the code break down in the MH so will check and get back to you. I can't remember just now. A senior thing.

Re: 5 to 6 speed TCM reprogam

Reply #7 –
Yahoo Message Number: 10176

I'm probably rehashing old posts now, but it takes either a GM shop or Allison shop with the Tech II tool to do the change? I assume even non medium duty GM dealers would possess the Tech II for work on the pickups with Allison? I'm currently shopping for a buick from a GMC/Chevy/Buick dealer, maybe the sale can be contingent on reprogramming my Kodiak. The 2 pieces of information needed is the rear axle gear ratio and code of transmission, and both of these are available on the build sheet(visor or printout) or do I need to look at the tranny?

Roger

Re: 5 to 6 speed TCM reprogam

Reply #8 –
Yahoo Message Number: 10177
The TECH II should be common to any GM shop, it is used for all the vehicles. Service manager used it to diagnose a miss in the GMC Canyon that we used to have.

Re: 5 to 6 speed TCM reprogam

Reply #9 –
Yahoo Message Number: 10178


I have Edge with attitude set to level 3. Works for me. What year is your truck?
Denny

Re: 5 to 6 speed TCM reprogam

Reply #12 –
Yahoo Message Number: 10181
Refer to the web site "DieselPlace.com" -Medium Duty Trucks- threaded to 5 speed to 6 speed instructions. Read that as it will tell you what to look for and what years are eligible.
Denny

Quote
On Nov 29, 2012, at 8:39, "" tj.kennedy@...> wrote:


I have a 2005 Gulf Stream with the Duramax.

Connected by Motorola

Dennis Bradford dbrford43@...> wrote:


I have Edge with attitude set to level 3. Works for me. What year is your truck?
Denny


Re: 5 to 6 speed TCM reprogam

Reply #13 –
Yahoo Message Number: 10182
Here is the link to thread on DP.
http://www.dieselplace.com/forum/showthread.php?t=447152
For those that have not put a tune on their Kodiak. Mine has a 60 HP tune. This is a mild change. But what a difference in performance. Do not expect a improvement in MPG. The six speed upgrade will do that.
Those with 4.78 rear axle will see the best improvement.
Best
Ron Hall

Re: 5 to 6 speed TCM reprogam

Reply #16 –
Yahoo Message Number: 10265
Please be careful if dealing with Killerbee. He has been banned from Diesel Place. His intention and service may be OK. But be aware.
Best
Ron Hall

Re: 5 to 6 speed TCM reprogam

Reply #18 –
Yahoo Message Number: 10268

Dennis,

I want to go to the 6 speed in my 2006. What year Kodiak did you get the vin from and how can I find one.

Thanks,
Dan

Re: 5 to 6 speed TCM reprogam

Reply #19 –
Yahoo Message Number: 10269
Any 08 will do. I incourage you to go over to the "dieselplace.com" and review all the posts there. That will inform you as to what you can do simply and what can be done with a few more bucks.
Denny

Re: 5 to 6 speed TCM reprogam

Reply #20 –
Yahoo Message Number: 10270
Dan---go to the Medium Duty threads as well as the Allison after market threads.
Denny

Re: 5 to 6 speed TCM reprogam

Reply #21 –
Yahoo Message Number: 10271
Thanks for the heads-up. Do you know the details?
I just completed a small order from him....no issues.

Re: 5 to 6 speed TCM reprogam

Reply #22 –
Yahoo Message Number: 10272
Problems with various products he offered. That being said. It has been 3-4 since he was banned. Just keep your eyes open.
Best
Ron Hall

Re: 5 to 6 speed TCM reprogam

Reply #23 –
Yahoo Message Number: 10273


Thanks. I will do that after the holidays and let you know how it worked out.

Dan


Re: 5 to 6 speed TCM reprogam

Reply #24 –
Yahoo Message Number: 12128
Been reading the topics regarding adding the 6th gear and Edge products.
I beleive the 6th speed is already active in our 07 and it has an Edge CS, which I can't tell assists with anyting.
At 10 mpg it is eating my lunch daily.
I am unsure of axle ratio but thought it was in the 5's.
Anyone getting better mileage and if so, HOW? ? ? ?
Thanks