Tweaked with my 4L80e tune, now won't downshift from OD/4th into 3rd while coasting.. - LS1TECH - Camaro and Firebird Forum Discussion

Go Back  LS1TECH - Camaro and Firebird Forum Discussion > CHASSIS, SUSPENSION, APPEARANCE > Automatic Transmission
Reload this Page > Tweaked with my 4L80e tune, now won't downshift from OD/4th into 3rd while coasting..
Notices
Automatic Transmission 4L60E | 4L80E | TH350 | TH400 | TH2004R | Powerglide | Converters | Shift Kits
Sponsored by:
Sponsored by:

Tweaked with my 4L80e tune, now won't downshift from OD/4th into 3rd while coasting..

Reply

Old 04-11-2018, 12:16 AM
  #1  
TECH Enthusiast
Thread Starter
iTrader: (4)
 
Ford_Assassin's Avatar
 
Join Date: Apr 2007
Location: Jackson, Ca.
Posts: 647
Question Tweaked with my 4L80e tune, now won't downshift from OD/4th into 3rd while coasting..

Hey guys, I have HP Tuners and know enough to get into trouble. Last week I was messing with some shift settings, mostly lockup for towing on my 2003 Silverado with a 4L80e swap. I noticed yesterday that when I now manually move the shifter from 4th to 3rd while coasting downhill (mostly for engine braking reasons) it won't actually downshift into 3rd. If I am cruising with the throttle applied and I move the shifter into 3rd from 4th it will downshift. I have compared previous tunes, but I am at a loss to what I changed.

I will gladly email my tune to anyone who wants to see the actual settings.

Thanks!!
Attached Files
File Type: hpt
Silverado4.9.18.hpt (248.1 KB, 3 views)

Last edited by Ford_Assassin; 04-11-2018 at 12:34 AM.
Ford_Assassin is offline  
Reply With Quote
Old 04-17-2018, 06:30 AM
  #2  
11 Second Club
iTrader: (42)
 
rel3rd's Avatar
 
Join Date: Nov 2005
Location: Baltimore, MD.
Posts: 1,657
Default

You should be able to click on EDIT, then VIEW CHANGE LOG, to see exactly what you changed.

I used the Blue Cat software to setup my truck (4L60E), and my car (4L80E).

Both shift great, up or down.

https://forum.hptuners.com/showthrea...Table-Software
rel3rd is offline  
Reply With Quote
Reply

Thread Tools
Search this Thread
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: