Duramax Diesels Forum Truck of the Week
  #1  
Old 09-09-2019, 09:36 AM
Trip450 Trip450 is offline
FNG
 
Join Date: Aug 2019
Posts: 3
Default Lbz 2wd to 4wd questions!

Whatís up everyone. So my truck is a lbz 2wd. So Iím going to be purchasing the wfo sas kit. But wonít be for probably another few months. But I have a few questions. I have bought trans tcase body harness and dash harness off a 4wd. My question is if I put everything on my truck will I still be able to drive it in 2wd with the 4wd transmission and tcase on the truck with the 2wd ecm and tcm? Just want to make sure my truck will still be driveable haha
Reply With Quote
  #2  
Old 09-09-2019, 10:11 AM
Trip450 Trip450 is offline
FNG
 
Join Date: Aug 2019
Posts: 3
Default Lbz 2wd to 4wd conversion ecm questions

Whatís up everyone. So my truck is a lbz 2wd. So Iím going to be purchasing the wfo sas kit. But wonít be for probably another few months. But I have a few questions. I have bought trans tcase body harness and dash harness off a 4wd. My question is if I put everything on my truck will I still be able to drive it in 2wd with the 4wd transmission and tcase on the truck with the 2wd ecm and tcm? Just want to make sure my truck will still be driveable haha
Reply With Quote
  #3  
Old 09-09-2019, 10:17 AM
Bdsankey's Avatar
Bdsankey Bdsankey is offline
Gearhead


 
Join Date: Feb 2018
Location: Neenah, Wisconsin
Posts: 1,083

Default

Stick with one post asking the same questions. This is the third post I've seen on this topic. One in introductions, one in tuning/logging/gauges, and this one in builds. Making the post in multiple locations will not get you an answer quicker. Your other post in tuning/logging/gauges should get you the answers you're looking for in regards to potential issues via the ECM/TCM/BCM.
__________________
Current Rides:
1) Toy: 2005 LLY ECSB, Leather, Sunroof
-1340hp/2200ft-lbs @ ATS Diesel (06/04/19)
-Tuned by Zach @ Starlite
-Built Motor, Forced Inductions Billet ETR Gen 4 S480/96/1.10 T6 w/V2 Race Cover, Modded Exergy 250% Injectors, Exergy 14mm Street Pump/LBZ CP3, Goerend Q Converter, Billet Trans, Fuelab Supply Pump/Reg, RCD & Beans Sumps, Front E-Locker, TrueTrac, Yukon 4340 Rear Shafts, Traction Bars, DHD Center Link Brace, DHD Lower Crossmember Support


2) DD/Tow Rig: 2002 LB7 CCSB, Leather, Loaded
-Tuned by Starlite
-Bosch NEW Injectors, FASS 150, 3" Downpipe, 4" Downpipe Back, RCD Sump, PPE Sleeves, DHD Centerlink Brace, DHD Lower Crossmember Support, Steering Wheel Radio Control Swap
Reply With Quote
  #4  
Old 09-09-2019, 11:39 AM
PureHybrid's Avatar
PureHybrid PureHybrid is offline
Isuzu Shakes IT
 
Join Date: Feb 2012
Location: Central OH
Posts: 2,460

Default

ECM calibration stays the same
__________________
04 GMC ECSB LLY - Mix breed trans/SC1056 - Kennedy twin pumps/pickup - 531/944
I can't complain, but sometimes I still do
8.17@84mph 1/8mi
Jesse
Reply With Quote
  #5  
Old 09-09-2019, 12:28 PM
Trip450 Trip450 is offline
FNG
 
Join Date: Aug 2019
Posts: 3
Default

Thank you. What about the tcm I don’t want to use 4wd yet

Last edited by Trip450; 09-09-2019 at 01:01 PM.
Reply With Quote
  #6  
Old 09-09-2019, 01:06 PM
JoshH's Avatar
JoshH JoshH is offline
Daggum farm truck
 
Join Date: Feb 2007
Location: Texas!!!
Posts: 13,224

Default

Stop spamming the forum with the same question. I caught one and deleted it before anyone commented.
__________________
06 Silverado 4x4 CC/SB

06 Express 2500 Duramax Van "The Dumpster"


Reply With Quote
  #7  
Old 09-09-2019, 01:53 PM
2004LB7's Avatar
2004LB7 2004LB7 is offline
Hotrodder
 
Join Date: Dec 2010
Location: Norcal
Posts: 1,994

Default

The only thing I remember about some others who have done it is having trouble in 4Lo. Something about wheel speed being sensed by the ABS being different then what the computers think it should be. Unless you have a way to tell it it is in 4lo. Otherwise in 2hi or 4hi it was fine
__________________
2008 Chevrolet 3500HD DRW LTZ
285/75/17 Nitto Dura Grapplers, 4.56 gears, Front and rear ARB lockers, Efi Live tuning by me, Raptor 160 LP, Cognito 4-6 NTB Lift, 4" Exhaust, Built Trans by Mike L.

2006 BRM Jetta TDI. Injectors, turbo, Malone custom tuning on ecm and tcm
Reply With Quote
  #8  
Old 09-09-2019, 01:58 PM
Bdsankey's Avatar
Bdsankey Bdsankey is offline
Gearhead


 
Join Date: Feb 2018
Location: Neenah, Wisconsin
Posts: 1,083

Default

Quote:
Originally Posted by 2004LB7 View Post
The only thing I remember about some others who have done it is having trouble in 4Lo. Something about wheel speed being sensed by the ABS being different then what the computers think it should be. Unless you have a way to tell it it is in 4lo. Otherwise in 2hi or 4hi it was fine
Would an OS change fix that? I've never tried converting them over either from 2wd or from ifs to sas.
__________________
Current Rides:
1) Toy: 2005 LLY ECSB, Leather, Sunroof
-1340hp/2200ft-lbs @ ATS Diesel (06/04/19)
-Tuned by Zach @ Starlite
-Built Motor, Forced Inductions Billet ETR Gen 4 S480/96/1.10 T6 w/V2 Race Cover, Modded Exergy 250% Injectors, Exergy 14mm Street Pump/LBZ CP3, Goerend Q Converter, Billet Trans, Fuelab Supply Pump/Reg, RCD & Beans Sumps, Front E-Locker, TrueTrac, Yukon 4340 Rear Shafts, Traction Bars, DHD Center Link Brace, DHD Lower Crossmember Support


2) DD/Tow Rig: 2002 LB7 CCSB, Leather, Loaded
-Tuned by Starlite
-Bosch NEW Injectors, FASS 150, 3" Downpipe, 4" Downpipe Back, RCD Sump, PPE Sleeves, DHD Centerlink Brace, DHD Lower Crossmember Support, Steering Wheel Radio Control Swap
Reply With Quote
  #9  
Old 09-09-2019, 03:20 PM
2004LB7's Avatar
2004LB7 2004LB7 is offline
Hotrodder
 
Join Date: Dec 2010
Location: Norcal
Posts: 1,994

Default

I think it was from being unable to send the 4lo signal down the can bus or whatever it used to tell the modules it was in 4lo. Unless you hooked up all of the components, switches, modules, etc 4lo was pretty much a no go unless you are fine running with ABS and other lights on

I think all the BCM, TCM and anything else involved is programmed with the 4WD calibration. It just never goes into it without all the required hardware

There are others here that understand this part much better than me. We should wait for them to chime in
__________________
2008 Chevrolet 3500HD DRW LTZ
285/75/17 Nitto Dura Grapplers, 4.56 gears, Front and rear ARB lockers, Efi Live tuning by me, Raptor 160 LP, Cognito 4-6 NTB Lift, 4" Exhaust, Built Trans by Mike L.

2006 BRM Jetta TDI. Injectors, turbo, Malone custom tuning on ecm and tcm
Reply With Quote
  #10  
Old 09-10-2019, 06:46 AM
PureHybrid's Avatar
PureHybrid PureHybrid is offline
Isuzu Shakes IT
 
Join Date: Feb 2012
Location: Central OH
Posts: 2,460

Default

Not sure if 06+ is different, but when I 4wd swapped mine, I just hooked up the harness. Didn't have to reflash anything, just had to source the TCCM and hook it up. From what I remember, Ben said the calibrations are the same, you just have to run a signal wire for 4LO so the ECM / TCM knows
__________________
04 GMC ECSB LLY - Mix breed trans/SC1056 - Kennedy twin pumps/pickup - 531/944
I can't complain, but sometimes I still do
8.17@84mph 1/8mi
Jesse
Reply With Quote
Reply


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

Forum Jump


All times are GMT -7. The time now is 04:55 PM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
vB.Sponsors