"Shift Range Inhibited" and wont shift into 4th - Chevy and GMC Duramax Diesel Forum
Transmission Shop Discuss the Allison OEM, aftermarket, and the ZF-6.

DuramaxForum.com is the premier Chevy and GMC Duramax Diesel Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 02-24-2013, 03:27 PM   eBay Motors  #1 (permalink)
Junior Member
 
james007's Avatar
 
Join Date: Jul 2011
Location: CANADA
Posts: 246
"Shift Range Inhibited" and wont shift into 4th

Hey guys my lb7 suddenly started getting a warning message on the dash saying shift range inhibited when i go to put it in gear. and when i finally get it to go into gear, i cant go past 60km/h because it wont shift into 4th gear. i cleaned the switchs on the side of the tranny with break clean then put synthetic grease in them, and its still doing it. I know theres someone i have to replace i just dont know waht. thanks.
__________________
2003 LB7 "Daisy"
Intake filtered by K&N, EFI, Watch Dog, MBRP 4" straight to 6" single stack, ProFab Turbo Horn, PPE boost vavle, BD high idle switch all while sitting on 35" firestone M/Ts Work Truck
Undercoated Annually
james007 is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 02-24-2013, 03:40 PM   eBay Motors  #2 (permalink)
DuramaxForum Veteran
 
boostnlb7's Avatar
 
Join Date: Nov 2012
Location: in the woods of michigan
Posts: 1,362
Its a little black box on yur tranny i think its called the shift control modulator. Im not sure if thats what it is but ive had to replace mine once when it said the same thing. Mine also does that when i limp it
__________________
Eddie "boost master"
03 lb7 ccsb 4x4 inch lower than stock 20" mkw's 305/50/20 cooper zeons
auto meter boost/pyro/trans gauges- traction bars- 5'' DE 5" to 7" black mitre cut stack- PPE BIV- AD II 200 lift pump- edge insight CTS- spectre CAI- 45% over injectors- LMM cp3 & FPR -EFI live dsp5 from tony burkhard and danville performance
suncoast stage 4 trans, goerend "ML style" triple disc billet converter
Passin' 35psi on stock IHI with 290k on it
boostnlb7 is offline   Reply With Quote Quick reply to this message
Old 02-24-2013, 03:51 PM   eBay Motors  #3 (permalink)
Junior Member
 
james007's Avatar
 
Join Date: Jul 2011
Location: CANADA
Posts: 246
does it when you limp it? what does that mean
__________________
2003 LB7 "Daisy"
Intake filtered by K&N, EFI, Watch Dog, MBRP 4" straight to 6" single stack, ProFab Turbo Horn, PPE boost vavle, BD high idle switch all while sitting on 35" firestone M/Ts Work Truck
Undercoated Annually
james007 is offline   Reply With Quote Quick reply to this message
Old 02-25-2013, 03:49 PM   eBay Motors  #4 (permalink)
Junior Member
 
james007's Avatar
 
Join Date: Jul 2011
Location: CANADA
Posts: 246
SOMEONE PLEASE HELP LOL, can i change this part by my self??? is it worth doing it on my back in the yard??
__________________
2003 LB7 "Daisy"
Intake filtered by K&N, EFI, Watch Dog, MBRP 4" straight to 6" single stack, ProFab Turbo Horn, PPE boost vavle, BD high idle switch all while sitting on 35" firestone M/Ts Work Truck
Undercoated Annually
james007 is offline   Reply With Quote Quick reply to this message
Old 02-25-2013, 04:06 PM   eBay Motors  #5 (permalink)
Junior Member
 
james007's Avatar
 
Join Date: Jul 2011
Location: CANADA
Posts: 246
I cleaned the plugs and the shift range inhibited seemed to stop but its still not shifting past 2000 RPM
__________________
2003 LB7 "Daisy"
Intake filtered by K&N, EFI, Watch Dog, MBRP 4" straight to 6" single stack, ProFab Turbo Horn, PPE boost vavle, BD high idle switch all while sitting on 35" firestone M/Ts Work Truck
Undercoated Annually
james007 is offline   Reply With Quote Quick reply to this message
Old 02-25-2013, 05:04 PM   eBay Motors  #6 (permalink)
Senior Member
 
Join Date: May 2011
Location: Kamas, Utah
Posts: 775
Diesel Place : Chevrolet and GMC Diesel Truck Forums

Check this out ^^. ~$60 part at most Allison dealers.

Sounds like this will cure the issue.
__________________
2k7 GMC D/A
Back to square one..
outlawed_LLY is offline   Reply With Quote Quick reply to this message
Old 02-26-2013, 03:59 PM   eBay Motors  #7 (permalink)
Junior Member
 
james007's Avatar
 
Join Date: Jul 2011
Location: CANADA
Posts: 246
THANK YOU!!!!
__________________
2003 LB7 "Daisy"
Intake filtered by K&N, EFI, Watch Dog, MBRP 4" straight to 6" single stack, ProFab Turbo Horn, PPE boost vavle, BD high idle switch all while sitting on 35" firestone M/Ts Work Truck
Undercoated Annually
james007 is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply


Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Chevy and GMC Duramax Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
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.



Thread Tools
Display Modes

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



All times are GMT -7. The time now is 07:02 AM.



Powered by vBulletin® Copyright ©2000 - 2014, vBulletin Solutions, Inc.

Search Engine Friendly URLs by vBSEO 3.3.2