t400 in a 96 taho - Pirate4x4.Com : 4x4 and Off-Road Forum

chicagowillie · 12-17-2008, 07:22 PM

im going to be putting a t400&205 in my 96 taho what are some of the problems im going to have with the computer.

Odin K30 · 12-18-2008, 06:53 AM

The PCM in your Tahoe requires input from the VSS to function properly.

Bo185 · 12-18-2008, 07:04 AM

It will work with out it it. It just uses the VSS to shift the 4l60 and some idle properties. I am not sure who could tune it out for you. Tunecats use to to it but they got bought out years ago.

Why not a 4l80? It will give you an overdrive and your PCM will control it.

ROXROES · 12-18-2008, 07:41 AM

My buddy speaks VERY highly of this guy for any tuning:
ZIPPY Performance Tuning - Michigan

Odin K30 · 12-18-2008, 07:56 AM

Quote:

Originally Posted by Bo185

It will work with out it it. It just uses the VSS to shift the 4l60 and some idle properties.

Youre right it will work without it...but from past experience I wouldnt recommend it. The PCM needs the VSS input to control idle speed while the vehicle is moving. Without it, you will stall every time you come to a stop.

Very annoying

Bo185 · 12-18-2008, 08:13 AM

Quote:

Originally Posted by Odin K30

Youre right it will work without it...but from past experience I wouldnt recommend it. The PCM needs the VSS input to control idle speed while the vehicle is moving. Without it, you will stall every time you come to a stop.

Very annoying

He has is a Vortec 350 I doubt it will have any idle problems, it will run with out it. If so he can just raise his idle.

I have seen LSx engines have problems with idle and no VSS as well as poor fuel mileage.

Oh and he will lose his Speedo as well. And ABS.

bggrnchvy · 12-18-2008, 11:50 AM

I'd talk to Westers Performance about deleting your VSS.

They were the only ones who knew exactly how to add the 4l80e .bin files to my comp to make it run in place of a 60e when I called. All the other tuners said they weren't sure it was possible.

chicagowillie · 12-18-2008, 01:12 PM

thanks guys iv looked in to it a bitt and iv been told that i coild have some problems if i just unplug the trans so iv tested it out and the motor will barely run when i plug it back in its fine.so im going to go with propane.

12-17-2008, 07:22 PM	#1 (permalink)
chicagowillie Registered User Join Date: Sep 2007 Member # 100143 Posts: 67	t400 in a 96 taho im going to be putting a t400&205 in my 96 taho what are some of the problems im going to have with the computer.

12-18-2008, 06:53 AM	#2 (permalink)
Odin K30 Bad Doctor Join Date: Feb 2007 Member # 86878 Location: South of Heaven Posts: 2,464	The PCM in your Tahoe requires input from the VSS to function properly. __________________ -Vinny -from Elizabeth Nobody cares about your rigs specs... "Me too" short Crew build /forum/chevy/994394-odins-me-too-short-crew-build.html

12-18-2008, 07:04 AM	#3 (permalink)
Bo185 Vortec Scout II Join Date: Jun 2005 Member # 48545 Location: Arkansas / "The Stan" Posts: 3,598 Blog Entries: 1	It will work with out it it. It just uses the VSS to shift the 4l60 and some idle properties. I am not sure who could tune it out for you. Tunecats use to to it but they got bought out years ago. Why not a 4l80? It will give you an overdrive and your PCM will control it. __________________ '73 Scout II Vortec 6.0L 4L65e np241 '73 1210 Travelette SV392, T-34, 60/14bff 4.56's 35's '01 VW Beetle TDI-50mpg or better! GM Gen III/IV V8 swap info TECH: Gen III/IV "LS motor" to Early GM Auto Trans

12-18-2008, 07:41 AM	#4 (permalink)
ROXROES playinwithit Join Date: Aug 2007 Member # 97574 Location: Lake Wawasee, IN Posts: 2,047	My buddy speaks VERY highly of this guy for any tuning: ZIPPY Performance Tuning - Michigan __________________ Playin' with my Willys buggy build

12-18-2008, 11:50 AM	#7 (permalink)
bggrnchvy Rock God Join Date: Jan 2005 Member # 41764 Location: Bay Area, CA Posts: 2,033	I'd talk to Westers Performance about deleting your VSS. They were the only ones who knew exactly how to add the 4l80e .bin files to my comp to make it run in place of a 60e when I called. All the other tuners said they weren't sure it was possible. __________________ Tow Rig: 2006 Dodge 2500 610CTD/G56/NP271/AAM9.25/AAM11.5 Trail Rig: 1997 K1500 LQ9/4l80e/NP241/D60/14FF and some stuff in between No one is ever gone if they are always remembered. JasonPayneMemorial

12-18-2008, 01:12 PM	#8 (permalink)
chicagowillie Registered User Join Date: Sep 2007 Member # 100143 Posts: 67	thanks guys iv looked in to it a bitt and iv been told that i coild have some problems if i just unplug the trans so iv tested it out and the motor will barely run when i plug it back in its fine.so im going to go with propane.

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