4speed RWD/FWD Transmission Tuning (incl T42) [Archive]

Ls1 12225074 4l60 to 4l80 conversion (3 replies)
Burning transmissions like marshmallows at a campfire (2 replies)
4L80E Stock file with 01250003 OS? (5 replies)
single wire P/N in gear setting (6 replies)
4l80e Swap with COS5 (17 replies)
4L80E 3-4 Large Shift Time Error/TCC Cycling After Shift (17 replies)
Line Pressure PID for 4L80? (19 replies)
4L80E/4L85E 8.1 TCC Minimum Speed and Factory Lockup-Shift Tuning (20 replies)
T-42 stock tune for OS 24252617 (22 replies)
4L60E Transmission Torque Reduction during WOT (13 replies)
4L80E TCC release at idle (2 replies)
4L80 T42 problems (4 replies)
03 6L 4L80E VSS 1/2 GPS Speed (3 replies)
EFILive, please add these options that your competitor did over 8 years ago! (4 replies)
4l60e TCC Lockup unlocking at 0% throttle (14 replies)
80E Segment swap and ABS not working (4 replies)
0411 Segment swap issues 80E (4 replies)
Stock TCM Parameters Needed - 2006 Trailblazer SS T42 (5 replies)
T42 4L60E 3-4 UpShift issue (7 replies)
T42 4L80 file (7 replies)
Tuning transmission for single wire park/neutral input (3 replies)
need O/S 24255281 (0 replies)
No Lockup (13 replies)
Need 4L80E segment swap wiring schematic (1 replies)
4L60E Shift Pressure Knowledge (2 replies)
4L80E Harsh Engagement - TCC Drag (3 replies)
T56 to 80E first drive (1 replies)
4L80E swap always in 1st (3 replies)
T56 to 80E hurdles (3 replies)
t42 4L80e 3-4 voodoo (9 replies)
4l80e change gear completely opposite to what it should (14 replies)
Old T42 tune to new T42 requires updated operating system, segment swap? (3 replies)
2012 T42 tcm 4l60e to 4l80e (0 replies)
Long Shift Times (4 replies)
4l80e not shifting out of first (8 replies)
4l80 swap os numbers needed (4 replies)
Transmission tuning with E38 controller? (4 replies)
Upshifts Too Late, Downshifts Too Soon In One Truck But Works Great In Another (24 replies)
Jakes Performance 4L80E Stage III tuning (3 replies)
GMPP LS3 (E38) w/ 4L70E in square body 4x4 (10 replies)
4l80e lock up question (5 replies)
Want to lockup 4L60E in third gear at WOT (17 replies)
4L80e - ECM commanding D4 shift pattern, without a DTC? (1 replies)
4L80e - ECM commanding D4 shift pattern, without a DTC? (12 replies)
Transfer case ratio (10 replies)
TCC release help? (5 replies)
2004 4l60e not shifting out of first. (4 replies)
looking for 4l80e stock tune (8 replies)
Need an opinion and help on the pressures/ slip of new tranny. Files attached (8 replies)
shifting problem 4l60e (19 replies)
Any way to soften shifts a little after corvette servo? 2008 4l60e T42 (4 replies)
wot 2-3 shift on limiter (11 replies)
E38 & T42 Compatibility (2 replies)
Need to verify if tune file I downloaded is 4L80E (49 replies)
My experience with my 4L80E on T42 swap with (7 replies)
need a 4l80e os12606807 for tranny swap (0 replies)
What does a segment swap do? (5 replies)
Is this possible???? Experts needed for this one (1 replies)
TCC lockup temperature (3 replies)
shift point correction (1 replies)
4L80E Line Pressure (7 replies)
4L85E TCC Tuning Help (20 replies)
GMPP LS3 with T42 (5 replies)
How to stop upshift from 1st to 2nd while in 1st gear 2003 silverado 4L60 (2 replies)
Tshift pid (3 replies)
Pwm (3 replies)
Looking for a T-42 Swap Match! (1 replies)
2009 Silvy with 4L80E swap ... can someone look over the TCM file? (20 replies)
Commdoore L76 (e38) and 4L80e (T42) issues (7 replies)
Scanner- 4l80e Pressure control (0 replies)
Downloading Transmission Adaptive Shift Cells (4 replies)
newbie needs some help with an a4 2-3 shift issue! (8 replies)
55 chev LS3 conversion E40 T42 mph problems (15 replies)
4l80e shifts won't shift until redline (16 replies)
T42 OS Compatibility (0 replies)
T42 (6 replies)
New t42 module (2 replies)
09373372 OS need 4l80e Segment swap (6 replies)
4l80e swap into 1260691 pcm (8 replies)
Going from 4L60E to 4L80E and keep 4L60E segment, relays mod, any help? (7 replies)
4l80e PI3800 triple disk chatter off idle (27 replies)
T42 4L80 tow/haul switch (2 replies)
4l80e swap t42 (0 replies)
installing higher 2500rpm tc, tunning ? (2 replies)
Can a older 4L60E with preasure manifold and 3-2 be controlled with a 2010 TCM? (0 replies)
4L60E TCC Parameters (6 replies)
4l60E Trans Shift VSS Vs Rpm (2 replies)
P0757 help.. (11 replies)
Help with different shift patterns (3 replies)
4l60e slipping? or TC locking and unlocking (1 replies)
4l60E 4th shift pressure 96PSI (23 replies)
Free Shift Correction Spreadsheet (0 replies)
New member looking for some input on tune (68 replies)
04140003 OS and 4L80E ....Can it be done with segment swap ? (5 replies)
5.7 Vortec 4L60E Shifts Hard From Park (2 replies)
Torque Reduction with High Stall Converter? (12 replies)
Torque converter tune (0 replies)
TCC Lockup Issues (2 replies)
4L80E with Trans Brake, no reverse, line pressure? (3 replies)
411 swap, now P0706 and P1810 (24 replies)
tuning for 4l65e with dakota digital 8k (3 replies)
Transmission Manual Mode (11 replies)
Shift overshoot...trans or tune? (7 replies)
4L80E Trans Tuning, Possibl to reverence MAP instead of TPS?? (1 replies)
Just anothe 4L60E to 80E swap.... (3 replies)
4l80e swap, hesitation between 1-2 and 2-3 shifts (2 replies)
4L60E not holding first gear when shifter set at 1st. (11 replies)
4l80e TCC trouble (4 replies)
T42 OS Swap (1 replies)
Torque Signal Pressure (2 replies)
4L80E shifting issue (6 replies)
Speed Density Tuning, Trans now shifting harsh! (3 replies)
can you run a 04 4L60 with a 08 T42? (0 replies)
T42 4l70e to 4l80e segment swap (13 replies)
4L60E wont lockup using bidirectional controls (12 replies)
Desired Shift Times (22 replies)
4L80E swap, logged some data, take a look (2 replies)
copying trans segments (6 replies)
4L60E to 4L80E DTC Settings (8 replies)
T42 tutd (0 replies)
4L80E swap problems (7 replies)
Trans Fluid Temp (6 replies)
4l80 torque conv not unlocking on acceleration in top (5 replies)
T42 4L80E cal. (14 replies)
Upshift to 2nd gear when in maual 1st-4L80E (22 replies)
Feedback on trans pressure log (28 replies)
unsupported TCM from VF Commodore SS (2 replies)
Way too soft 1-2 wot shifts (4 replies)
Can I run a T42 with this OS? (1 replies)
TCC releasing at crusing speeds with light throttle (108 replies)
Prevent forced 1-2 upshift when in manual 1 and TCC lockup in 3rd. (10 replies)
Need help changing base idle transmission pressures with PCS. (1 replies)
Understanding Adaptive Learn? (10 replies)
No Shift Locked TCC file? (2 replies)
How to soften part throttle shifts: time or pressure? (34 replies)
TCC Tuning! TCC Lock 3rd at WOT? (80 replies)
4L80E WOT shifting problem. 1st-2nd bounce rev limiter! (7 replies)
Todays Questions! (8 replies)
Need blackbox 4L80E tune for my 4L80E segment swap (52 replies)
Tuned by frost 4L80E conversion harness and T42 compatibility (22 replies)
Lockup parameter D2801 question (6 replies)
Need to force an upshift! (4 replies)
TCC Modes? (51 replies)
Lockup Temp enable Question (10 replies)
4l60e tfmprs log after SD? (1 replies)
4L80E Issues (2 replies)
6.0 LS2 / T42 GTO - make trans line pressure TPS dependant? (2 replies)
weird 1-2 @wot (2 replies)
T42 config critique (43 replies)
4l60e Problem with TCC lockup in 4th below 39mph with a vacuum modulated valve body (0 replies)
4l60e manual shift tune? (13 replies)
Adaptive Shift Not Working? (12 replies)
stock file needed 05 corvette t42 2.72 gear (0 replies)
Trans hits 4th hard with light/no throttle, fine with moderate throttle (6 replies)
4L80e wont wait till commanded RPM to shift WOT (7 replies)
4l85e in a duramax van (2 replies)
Need 4L80E Help, slips then slams 1-2 shift (1 replies)
4L80e swap, won't shift 1>2 WOT (16 replies)
4l80e tuning (15 replies)
Need Help with tune (0 replies)
T42/E40 Logging (3 replies)
2006 TBSS 4l80 Swap (5 replies)
Tuning for dual transfer cases (0 replies)
TCC slips at light throttle (2 replies)
TBSS 4L60e to 4L80e T42 Swap (65 replies)
ISS transmissions (3 replies)
flashing for 4l80 (17 replies)
Seeking Advice on tuning a heavily modified 4L60E (45 replies)
08 Sierra 4l80e t42 issues (7 replies)
Code p0894 with high stall in 4l60 (0 replies)
Running 24X System with a 700R4 Transmission (4 replies)
E38 4l60e non iss possible? (6 replies)
Running OLSD , have to have P0102 set .....will it effect the trans (2 replies)
stock shift tables (0 replies)
Trans Abuse Mode vs Shift Torque Management (1 replies)
SHIFTDELAY - How to reduce it? (1 replies)
4l80e parameters to prevent TCC from disengaging in 4th gear (62 replies)
3rd Gear TCC locking/unlocking issue (19 replies)
New 80E and convertier....overheating (4 replies)
torque converter noise "growl" (4 replies)
Harsh 1-2 shift (11 replies)
WOT Shift at RPM or MPH? (3 replies)
Wont shift at wot (8 replies)
Downshifting from 3rd to 1st? (28 replies)
E38+T42 w/ older 4L60E w/o ISS (12 replies)
Question about GM.TRQENG pid (5 replies)
Manual upshift downshift 1,2,3,4 on 4L60e without manual valve body (12 replies)
Transfer case ratios (0 replies)
4L80E Will NOT SHIFT WOT (3 replies)
WOT downshift delay - any way to fix? (1 replies)
how do I diagnose trans slipping (2 replies)
D6035? (1 replies)
Performabuilt Lvl 2 4L60E Not Shifting at Desired Points (7 replies)
4L60E WOT shift 1>2 (5 replies)
Help with 4l80 segment swap!!! (2 replies)
4l80 shifting sluggish and not shiting at wot (3 replies)
E38/T42 4l60E P0717 Code (29 replies)
4L80E Tune Help Please! (0 replies)
1st to 2nd shift slipping at WOT (5 replies)
line pressure in efilive (3 replies)
4L80E downshift firmness question (13 replies)
8.1L PCM Controlling 1991 to 93 4L80E (2 replies)
T56 to 4L80e (3 replies)
07 Built trans TCC locks when WOT (T42) (9 replies)
WOT shifts very low (2500 to 3000 rpm) (3 replies)
4L80E Shifting Soft and Slow (tune attached) (18 replies)
trans not going into 4th gear even though log says it is? (5 replies)
Silverado SS 4l80 wont turn on after segment swap (0 replies)
4L80E shifting soft (0 replies)
4l65e not shifting at wot (13 replies)
Gear Indication and Manual mode questions (15 replies)
T56 to 4L80E setup/tuning (10 replies)
2002 PCM Red connector pin#51 Transmission Temp Signal 4L80E????'s (5 replies)
Stall Converter unlocks when cruise is enabled. (9 replies)
did segment swap to 4l80e have a question (4 replies)
Manual 4l80 swap question (11 replies)
04 Yukon/4l65 tranny tune/any experts in here? (1 replies)
Pinout for T42 as connected to a 4L80e in a 2007/2008 Van or Truck? (13 replies)
Any Ideas? (0 replies)
GenIII 5.7 with a 4L60E trans in a 4wd Tune. (3 replies)
4L60E Manual convertor lock up switch. (9 replies)
Tuning Tow/Haul Mode (9 replies)
Whats everyone doing with the TCC apply rate table? (11 replies)
new stall tuning (11 replies)
new tune for my 07 Chevy Express (1 replies)
4L65E tuning and towing (9 replies)
80E Irregular Lockup in 4th grear. (7 replies)
4L80E, unexplainable code 68 and weird 4-3 shift. (8 replies)
2-3 shift is not shifting please help!!!!! tune is in attachments (21 replies)
now something wrong with the tranny? (8 replies)
2-3 shift flare and TCC wont lock. Tune Inside (3 replies)
stall converters! what needs to be adjusted? (4l60E) (19 replies)
TCC Tuning Issue (8 replies)
t42, no ISS (3 replies)
Trans compatability question (2 replies)
Take off issues after burnout (0 replies)
List - T42 4L80E Tune Files (13 replies)
t42 4l80e tune (7 replies)
Help with tuning a 4L65E (2 replies)
3rd gear t/c lockup (8 replies)
Anyone have a 4L60E with a 3.42 rear 2002 Camaro?? (6 replies)
Light for power shift on/off (3 replies)
4l60E W/ Rachet shifter want it to hold geart till i change and still keep D function (13 replies)
T42 Speedo calculator help (4 replies)
Trans slipping with no DTC code? (8 replies)
WOT Downshift Shift Speeds (2 replies)
Converter Locking @ WOT, why (38 replies)
T42 Pid for modes of transmission?????? (5 replies)
2008 Silverado 2WD converted to 4 WD (8 replies)
Loosing 4th once converter is locked (41 replies)