2004 Duramax Rpo - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 10-22-2006, 11:36 PM
Registered User
 
Join Date: Oct 2006
Location: Ponoka Alberta
Posts: 16
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
2004 Duramax Rpo

I've just bought a 2004 Gmc duramax. In mid 04 they made a change to the duramax from the lb7 to the lly (I think I could be wrong). How can I tell which one I have?

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 10-23-2006, 09:17 AM
Registered User
 
Join Date: Oct 2006
Location: Ponoka Alberta
Posts: 16
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Even if you can tell me where I can find what month it was built in I can figure it out, i thought it usually said on the doors but it doesn't.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 10-23-2006, 09:54 AM
41willys's Avatar
Blowin' it
 
Last wiki edit: Choosing a trailer
Last journal entry: Running again...
Last photo:
Join Date: Aug 2002
Location: Katy, Texas
Age: 39
Posts: 417
Wiki Edits: 11

Thanks: 0
Thanked 0 Times in 0 Posts
Call your local Chevy or GMC dealer and ask them to run a GMVIS, or VIS, it will tell you the exact build date of your truck. It will also give you some of the build specs. You could ask them for the build specs and print it all.

Jason
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 10-23-2006, 11:13 AM
Registered User
 
Last photo:
Join Date: Nov 2005
Location: Ky.
Posts: 141
Wiki Edits: 0

Thanks: 7
Thanked 0 Times in 0 Posts
The 8th number in the VIN should be a 2 for LLY or 1 for LB7..hope this helps
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 10-23-2006, 04:57 PM
Registered User
 
Join Date: Oct 2006
Location: Ponoka Alberta
Posts: 16
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Awsome! Thanks guys, its a 2, LLY makes me happy
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 10-23-2006, 09:03 PM
ChevelleSS_LS6's Avatar
Jeep XJ and a Javelin
 
Last wiki edit: Compression test
Last journal entry: August 9, part III
Last photo:
Join Date: Dec 2001
Location: Grand Rapids, Michigan
Age: 28
Posts: 1,610
Wiki Edits: 7

Thanks: 3
Thanked 0 Times in 0 Posts
Gotta love diesel powa!

there;s nothing like seeing a "grandpa 5thwheel hauler" lay the smack on a z28.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 10-23-2006, 10:08 PM
jray's Avatar
Registered User
 
Join Date: May 2006
Location: PineyWoods,Louisiana
Posts: 142
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by ChevelleSS_LS6
Gotta love diesel powa!

there;s nothing like seeing a "grandpa 5thwheel hauler" lay the smack on a z28.
Down side to that is when you are driving your wife's Mustang GT and have it done to ya....
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 10-24-2006, 08:47 AM
T buckets rule
 
Join Date: Oct 2005
Location: Hills of TN
Age: 64
Posts: 134
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
You bought a great truck there. I work in a diesel shop as a service manager. We have yet to have a Duramax in for any type repairs. The main part of or bussines is the Ford Powerstroke. Then the Dodge Cummins.
We also do performance upgrades. We have one customer who has a Duramax an 05 that make 600 rwhp. Talk about a ride. Of course he has spent at least $10,000 to get it.
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 10-24-2006, 08:10 PM
Registered User
 
Join Date: Oct 2006
Location: Ponoka Alberta
Posts: 16
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Good to know, so far I love it. Stock its got a bit of turbo lag but it still impresses me how fast a 7000lbs truck will move. Have any of you fooled around with power programmers? I was thinking about getting the Banks "Six Guns" it seems like it has the best features, I'll probably get an intake and exhaust first though.
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 10-24-2006, 08:14 PM
Registered User
 
Last photo:
Join Date: Nov 2005
Location: Ky.
Posts: 141
Wiki Edits: 0

Thanks: 7
Thanked 0 Times in 0 Posts
I've used the Edge, Van Aaken and Predator so far in mine.......Anything over I'd say 90 HP will limp your tranny if it's an auto.......found that out the hard way.......Edge or Banks and VA are easiest to use.......Predator ran extremely strong on mine..........EFI Live is on the list next, after the Suncoast V tranny upgrade........best of luck!! Brad
Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 10-24-2006, 08:18 PM
Registered User
 
Join Date: Oct 2006
Location: Ponoka Alberta
Posts: 16
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Its not hard to make 800ftlbs of torque with these new diesels, chip intake and exhaust and you have it. What happens if you have that much power and your pulling a trailer and you decide to giver off the light? Will you snap every drive line part in them?
Reply With Quote Quick reply to this message
  #12 (permalink)  
Old 10-24-2006, 08:46 PM
RPM's Avatar
RPM RPM is offline
World Class ASE tech
 
Last photo:
Join Date: Nov 2004
Location: Hills of TN
Age: 64
Posts: 704
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I don't like the Banks stuff. It is way overpriced and over rated in my opinion. Edge has the best stuff for the Duramax that i have seen. Get an edge with Attitude Monitor. You will have a nice gauge pack and can change HP on the fly.
Reply With Quote Quick reply to this message
  #13 (permalink)  
Old 10-24-2006, 09:14 PM
Registered User
 
Join Date: Oct 2006
Location: Ponoka Alberta
Posts: 16
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
What is limping the tranny? Is it something you can feel or a code? Does it mean your trannys on its way out or what. At about 80kph if I'm driving along like a granny my truck will start surging slightly like it cant choose a gear is that somewhat normal, maybe something to do with bigger tires.
Reply With Quote Quick reply to this message
  #14 (permalink)  
Old 10-25-2006, 09:53 AM
T buckets rule
 
Join Date: Oct 2005
Location: Hills of TN
Age: 64
Posts: 134
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
The Allison trans, if it slips tells the puter to turn the fuel off so the trans does not get burned up. They call this limp mode. On your surge, you might try to change the fuel filter.
Reply With Quote Quick reply to this message
  #15 (permalink)  
Old 10-25-2006, 11:03 AM
ChevelleSS_LS6's Avatar
Jeep XJ and a Javelin
 
Last wiki edit: Compression test
Last journal entry: August 9, part III
Last photo:
Join Date: Dec 2001
Location: Grand Rapids, Michigan
Age: 28
Posts: 1,610
Wiki Edits: 7

Thanks: 3
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by jray
Down side to that is when you are driving your wife's Mustang GT and have it done to ya....
That would suck... lol... diesels are the ultimate sleepers!

As for what to watch for, make sure you're not overpowering the driveline, and watch EGTs. The allison is pretty bulletproof, the stock dodge and ford autoboxes tend to not live well under performance use.
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




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

Posting Rules
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Diesel engine oil,assembly lube and flat tappet cams 78 monte Engine 7 06-19-2006 10:01 PM
Ethanol yea or nay hotrodgrasshopper Hotrodders' Lounge 30 03-30-2006 12:54 AM
2004 Hemi V.S. 2004 R/T Adrenaline_Fiend Hotrodders' Lounge 26 05-12-2005 01:25 PM
Look What's Coming On Monster Garage!!!!!!!!!!!!!!! willys36@aol.com Hotrodders' Lounge 10 01-20-2004 09:17 AM


All times are GMT -6. The time now is 08:32 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.