It's a drive by cable throttle body. I have to say I don't believe I ever tested the 4low on the truck because I never used it even when I swap the transfer case and 4l80 in lol
no change on the idle. Also noticed that there is no shift indicator light telling which gear it's in on the dash.
Last edited by smasher; 09-21-2024 at 05:20 PM.
I did not even look to see if flex was enabled right now. I was just letting him know to be careful when it is. Some of the calibrations default to 38% ethanol in the event of a sensor failure.Originally Posted by DodgeZ
I bet this is going to need some spark adjustments. Wonder if the missing ground strap was offsetting the ks voltage because there is KR all over the place now.
Yes sir I believe so
got a question why not take the 2002 suburban with flex fuel and 4wd and just do the segment swap on it like I did mine when I converted it to 4l80?
Which file are you running right now?
That is what I was thinking of trying next. I had to start with a bin to get the pcm sn/vin going with a new os, I figured starting with a 8.1L/4l80e would have been the better choice, maybe it is not. You should flash in your old OS. Try the 4 low with it. I ran across this https://ls1tech.com/forums/pcm-diagn...l#post19706861
This p01 I bought should be here Wednesday. I can use my bench harness to mess with it. I was flashing my LS Jeep but I had to move it out of the driveway for an Cadillac Escalade (LQ9) I picked up today.
i switched everything on this file its a 02 Burban but i don't know how to do the vin or the misfire stuff and still need to adjust spark and throttle
Edit: I was able to change the vin just need to make adjustments. Also is there anything else that needs to change to write this file?
Last edited by smasher; 09-21-2024 at 10:22 PM.
this is what's in there right now
Looking at the bin files I see a difference for what looks like the fuel gauge. It seems like the 8.1 use pulse width modulation and the 5.3 doesn't. I'll start over with a 5.3 base file.
*edit, nevermind, your tune has that switched.
fuel gauge.png
Last edited by DodgeZ; 09-21-2024 at 10:41 PM.
You can use this one I switched everything. However, there is some epa stuff you have to take a class for apparently, I guess that's where mister Sirius comes in. Here is the latest log as well. If I were to tune it, I would take some spark out the middle and blend it but I'm not sure. For the idle it would have to be the over/ under speed?
Last edited by smasher; 09-21-2024 at 11:11 PM.
Show me a log with SD12. Write entire.
Last edited by SiriusC1024; 09-21-2024 at 11:20 PM.
Ok ill put it back in there and take it for a spin. probably a good call on re doing it but I did get a tick of knock in the beginning of the run, but it went away. I wonder if the density of warm air during the day is causing KR since it is less dense? Thats when I took a log on of the last flex fuel file was during the day. its 93 during the day and 75 at night right now. Also, what do you think of that suburban file? I guess you need an epa license to turn of check engine lights to.
Edit: I went ahead and took the access test and change everything on the emission side.
Last edited by smasher; 09-22-2024 at 01:32 AM.
Awesome you are getting in there and figuring it out! Look at the DTCs, couple messing. The idea is you do the compare and change them until they aren't red, painful. This isn't flashable, if you look at the cal details, next to the close file button. Look at the controllers tab. That SN doesn't match your PCM, so it will want credits to use. I had a post talking about this, it probably didn't make much sense at the time but you may want to go back and re-read it now.
Also, just FYI it is kind of a jerk move of me to "hijack" Sirius amazing work on getting your tune dialed in. It would probably better to start a new thread about moving to the flex fuel OS to work through the issues. Unless Sirius enjoys the madness and I am wrong.
take a look at the sn/vin. This should be a base 1500 5.3 4wd flex file for you to play with.20240922-01 Smasher SN-VIN Flex OS 5_3L 1500 ATC 4wd first read .hpt
I see what you're saying about the serial/vin otherwise I'm going to be charged credits. I don't believe Sirius has touched anything of mine that flex fuel related yet. Also, I did the compare on these files, and it would disappear on me, so I lined them up side by side in two different windows to transfer the dtcs
Last edited by smasher; 09-22-2024 at 12:13 PM.
No I don't mind at all. Besides, it's his thread not mine. The only thing that is annoying is now there's knock where there wasn't before. Idk if it's because of OS modifications or what. I'll wait until you two are finished so things aren't changing all the time.
Sorry about that I guess we kind of dove off into this. I did run a log above with the SD 12.
I don't care what you take I'm learning just like everyone else. here is the file you gave me that I switched over. I'm going to write entire this one in and see what happens.
EDIT Everything works 4wd low, fuel gauge, shift selector, and idles great again but something funky is going on with the transmission doesn't want to shift to first but will shift to second seems like it needs a segment swap but doesn't let me swap it with my with my current trans. Humm I'm unsure what's causing the issue there is a couple of things i was unable to change. maybe need to adjust shift points
Last edited by smasher; 09-22-2024 at 02:10 PM.
Did you seg swap from a 4l80e tune from one of the 6125 OS hpt files??
Last edited by DodgeZ; 09-22-2024 at 02:15 PM.
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