have you tried doing a brake/clutch pedal relearn?
Type: Posts; User: Tre-Cool
have you tried doing a brake/clutch pedal relearn?
I would turn the UP/Down Req option off.
Can u also confirm what the logger shows when your shifter is in drive mode & pulled back an additional click.
log the PRNDL Status pid for that.
im thinking when u say pre-facelift & 2012 colorado, Im guessing it was the bosch based ecu, not the later gm/delco e98 ecu?
prob good bet the bcm was a lot dumber on that model compared to 2013...
is the tcm os the original 2012 from the 6l50e?
yes 7e8 is the ecm. been a while since i logged can data directly.
probably need to map out the id's for all the can modules, the main difference...
they also made a change in late 2008/09 too. i can flash an 06-09 trans with different tunes to get them to align with the ecu os, it's on my list to dive into the code options to find what actually...
seems odd that the bcm stops the trans from communicating to the ecm. typically the ecm address would 7E0, tcm = 7E2. bcm would be another address.
you could try doing a full write of a different...
sounds like its dropping power to the trans or missing when its running? if you can pull the tune from the tcm then it's clearly on the can network. typically to talk to the ecm your going via the...
i have the square unit in 1 of my cars, a few of the led's died pretty quickly.
but have the smaller round units in customer cars and they are fine are years.
if this is your first go at this type of combo, I might be worth contacting some one with more experience.
yes, it ties in deeply with the minimum air flow tables in the ecu. on the tcm side sometimes the closed throttle downshift option works best on throttle mode.
yeah, the use regulator settings should be all thats needed. however there are other tables for lockup control that are not mapped in the software., well there are lots actually, but the ones shown...
buy this https://global.ihs.com/doc_detail.cfm?item_s_key=00443334
it's the engineering standard docs from GM. it will have all of that info.
example:
144271
in a factory setup it's actually the ecu that get's a triggered input for low range not the transmission.
*it may be possible* but there is some switches that enable 4wd mode. might need to source...
late to the party, at least the trans os is based off 24256125. I would just do a segment swap from an 2010/2011 hsv. reset the adapts, set your relevant tyres/diff size.
the shifting back to 5th...
highly likely you have the wrong os in the tcm.
does the car have the original tech still?
Ive played around with decompiled binaries for the trans & there is lots of options that both efilive/hpt/tunercat don't show. Understandable because theres so many god dam parameters!
anyway ive...
what state in australia is the car located in?
from my experience, every man & his dog are tuning ls cars now, even a lot of workshops (at least in w.a) still don't have a very good understanding...
probably just a timing retard event for the shift.
need to post what the os version are on the trans & ecu. what you explain sounds like the box is going to limp mode.
check for dtc's. bet your getting some can based errors.
not sure if the parameters are the same for the 8 speed but in the 6.
u go to transmission --- Shift general
change the range active to D4. change disabling the Up/Down Req option too. (this...
Im working with Holden Calibrations (12609099 & 12607218) for now & funnily enough by default it has the 4WD low option already enabled. None of the cars i work with ever have DOD anyway, so no big...
I had a sneaking suspicion there was multiple inputs to select between maps, unless it used some form of resistance based difference like the t43's, but i couldn't see anything in ghidra.
So it...
very nice. Any hints if there is a pin used to select the throttle maps. I have a definition for an old OS that gives an option to allow switching maps via CANbus or Discrete requests.
"Used to...
you cant write an 08 tune to anything newer than 2009. the techm's are different. with hpt it may brick it, but with other software you can recover. I've tested it.
try logging the engine rpm, trans vss, input & shaft shaft from 2 cars & report back findings & the OS/cal. I might be able to find a bin file & see if anything lines up.
do it with a minimum pids...