Transmissions

Have Transmission Questions? Ask a Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

This answer was rated:

I meed ta know, if ya can put a 6 speed allison, in a 2004…

I meed ta know...

I meed ta know, if ya can put a 6 speed allison, in a 2004 2500hd, that had a 5 speed? And is there any modifications that have ta be made?

Mechanic's Assistant: What is the make/model of your car?

2004 chevy silverado 2500hd

Mechanic's Assistant: Are you fixing your Silverado yourself? What have you tried so far?

No, I was gonna have a tranny shop do it for me, if it could be done.

Show More
Show Less
Ask Your Own Transmissions Question
Answered in 4 hours by:
3/24/2018
Steven
Steven, Shop Foreman/Triage Tech
Category: Transmissions
Satisfied Customers: 137
Experience: Allison transmission certified, Certified with GM transmissions, eaton, and meritor transmission.
Verified

Hello, My name is***** me to assist you with this. Let me first ask, is there any reason for the swap? Is there something wrong with the trans that is in the truck now? Or are you just looking to drop the RPMS down at highway speed? Thanks

Ask Your Own Transmissions Question

The reason why I ask is because there is a company called Sun Coast that makes a conversion for you existing transmission in your truck that makes it a 6 speed. This includes a valve body and kit, does not need the trans removed from the truck. The issue between the 1000 series like you have is that tcm talks over the 1939 data link, where the newer 6 speed late05+ talks over a more complex candi network which your truck does not have. Allison has a program that will allow the trans to operate the 6 speed that they had in test vehicles but they will not release it. If a 6 speed is placed in your truck it will not work. Here is a link to that conversion kit, Let me know if you have any other questions. Thanks, https://www.xtremediesel.com/sun-coast-a1-6vb-tcm-lb7-allison-5-6-speed-conversion

Please don't forget to review my answers, all follow ups are no charge. Thank you for your time.

Steven
Steven, Shop Foreman/Triage Tech
Category: Transmissions
Satisfied Customers: 137
Experience: Allison transmission certified, Certified with GM transmissions, eaton, and meritor transmission.
Verified
Steven and 87 other Transmissions Specialists are ready to help you
Ask your own question now
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a transmission mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Steven Your Own Question
Steven
Steven
Steven, Shop Foreman/Triage Tech
Category: Transmissions
Satisfied Customers: 137
137 Satisfied Customers
Experience: Allison transmission certified, Certified with GM transmissions, eaton, and meritor transmission.

Steven is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry.

Stephanie PElm City, NC

used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future.

David L.Richmond, TX

9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much.

PhilMarysville, CA

Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible.

CharlesWalnut Creek, CA

As a single woman, I really appreciate an excellent and affordable opinion.
Thank you Geordie, I will not hesitate to contact justanswer in the future!

SueCharleston, WV

Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff.

JimCastleberry, FL

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

< Previous | Next >

Meet the Experts:

Chris (aka- Moose)

Chris (aka- Moose)

Technician

1,918 satisfied customers

16 yrs. experience with auto, manual, & CVT drivelines

Tim&#039;s Auto Repair

Tim's Auto Repair

Mechanic

507 satisfied customers

I have been rebuilding automatic transmissions for 25 years

Gary

Gary

ASE Certified Technician

407 satisfied customers

25 years GM master tech

Matt

Matt

Engineer

152 satisfied customers

Mechanical Engineer BEng Hons22 years experience in car engine industry, 10 years in formula 1

Mike Kelly

Mike Kelly

ASE Certified Technician

150 satisfied customers

17 years experience as an auto mechanic, foreign and domestic. 5 years running my own repair business.

Dave Nova

Dave Nova

ASE Certified Tech

98 satisfied customers

ASE Master Certification. 25 yrs experience

John Mc

John Mc

Trans specialist

93 satisfied customers

Transmission dealer tech for over 19 years

< Previous | Next >

Related Transmissions Questions
1000 in 2004 chev 2500hd pickup has started to have a
1000 in 2004 chev 2500hd pickup has started to have a grating whine upon decelleration from moderate speeds … read more
Chris (aka- Moose)
Chris (aka- Moose)
Technician
Vocational, Technical or Trade School
1,918 satisfied customers
Harsh shift between 2-3rd. Now since hot weather came it
Harsh shift between 2-3rd. Now since hot weather came it hangs a sec between 2-3rd 08 2500hd ltz rwd … read more
Chris (aka- Moose)
Chris (aka- Moose)
Technician
Vocational, Technical or Trade School
1,918 satisfied customers
I have an 06 chevy duramax with allison trans. any
I have an 06 chevy duramax with allison trans. any suggestions on how I best utilize the towing mode when towing a tailer … read more
Chris (aka- Moose)
Chris (aka- Moose)
Technician
Vocational, Technical or Trade School
1,918 satisfied customers
A year ago I bought a 2004 Winnebago RV with a 400 hp
A year ago I bought a 2004 Winnebago RV with a 400 hp Cummins with an Allison 6 speed. … read more
HDGENE
HDGENE
Master Technician/Lead Technician
Associate Degree
2,835 satisfied customers
I am getting a p0872 and p0700 which is limp mode and the
i am getting a p0872 and p0700 which is limp mode and the other is a pressure circuit code … read more
eauto
eauto
self employed
High School or GED
74 satisfied customers
Transmission seemed to go into neutral flashed a message
Transmission seemed to go into neutral flashed a message that I missed ,coasted to a stop,I then shifted into neutral then reverse then drive .I then checked the fluid level which was ok.I then hooked… read more
HDGENE
HDGENE
Master Technician/Lead Technician
Associate Degree
2,835 satisfied customers
Allison transmission over heating when going slow. Okay at
Allison transmission over heating when going slow. Okay at highway speeds. 2003 with 208,000 miles. … read more
Tool Hut
Tool Hut
Owner
519 satisfied customers
My snapon computer keeps giving me the code for a stuck E
My snapon computer keeps giving me the code for a stuck E valve and I did everything I could to fix it and I changed every part I possibly could that could be connected with the problem and nothing ha… read more
Chris (aka- Moose)
Chris (aka- Moose)
Technician
Vocational, Technical or Trade School
1,918 satisfied customers
Po 700 and po735 keeps going on had brought it to the shop
Po 700 and po735 keeps going on had brought it to the shop 10x keeps had the speed senor changed twice got 2 brand new Allison Transmission hag the Allison Transmission guys come out and look at it ha… read more
sprinkles08
sprinkles08
Technician
High School or GED
11 satisfied customers
Just want to know what you think about the 2002 chevy 8.1
Just want to know what you think about the 2002 chevy 8.1 with the 5 speed Allison tranny … read more
Chris (aka- Moose)
Chris (aka- Moose)
Technician
Vocational, Technical or Trade School
1,918 satisfied customers
I have a 2003 chev 2500hd 6.6 with Alison trans. shift to
I have a 2003 chev 2500hd 6.6 with Alison trans. shift to reverse get range shift inhibited. goes into drive but hard shift an not solid gear. changed shift cable pnp switch no help. serviced trans sh… read more
HDGENE
HDGENE
Master Technician/Lead Technician
Associate Degree
2,835 satisfied customers
I have a 2010 Chevy Silverado 1500 I put a new transmission
I have a 2010 Chevy Silverado 1500 I put a new transmission now the gear indicator does not work on the dashboard and it will not shift… read more
Gm Tech (Cam)
Gm Tech (Cam)
Owner/Technician
Vocational, Technical or Trade Scho
6 satisfied customers
I have a 2007 classic Chevy 2500 HD 6.6 l with an Allison
I have a 2007 classic Chevy 2500 HD 6.6 l with an Allison 1000###-##-#### that is toast. I have a wrecked 2008 Chevy 2500hd 6.6l Allison 1000(###) ###-####transmission is good. I want to swap them. I … read more
Kavey
Kavey
86 satisfied customers
I just purchased a 2016 GMC 3500 diesel 4x4 dually and the
I just purchased a 2016 GMC 3500 diesel 4x4 dually and the transmission is not "shifting down" when going downhill loaded. I am having to brake excessively to keep my speeds down. The transmission is … read more
Pedro Goncalves
Pedro Goncalves
13 satisfied customers
I have a 2004 2500hd with the 6.0 & 4.10 gears. It has been
I have a 2004 2500hd with the 6.0 & 4.10 gears. It has been a wonderful truck and have over 350000 ***** ***** on it pulling all of the time. I am looking at getting a replacement and looking at a 201… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
407 satisfied customers
I have a 2002 Chevy 2500hd with a 6.6 duramax with the 5
I have a 2002 Chevy 2500hd with a 6.6 duramax with the 5 speed Allison transmission and I'm wanting to swap the transmission to a 2006 Allison transmission aside the trans cool lines need to be replac… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
GM 2500HD Silverado: 2003 Chevy silverado 2500 HD Allison AT
2003 Chevy silverado 2500 HD Allison AT 4wd. 240000 miles. When I start the truck cold or warm the transmission shifts and performs perfectly normal and the cruise control works, then at between a 1/4… read more
Mike Kelly
Mike Kelly
ASE Certified Technician
Vocational, Technical or Trade Scho
150 satisfied customers
I hope you are able to answer some questions I have about the
I hope you are able to answer some questions I have about the Allison transmission. How are you able to know, without calling the dealer to look up the vin, if any year Chevy or GMC has an Allison tra… read more
rodcuda
rodcuda
Auto repair pro, 30 years experience
Associate Degree
74 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x