Gen III Flex fuel Write-up
11-13-2017, 07:03 AM
#162
Sounds like it plugs in. Might have to trim the the red sleeve on the harness to fit because it's keyed different. I believe you just cut the notches off the red sleeve. The p59 is keyed for a green sleeve. Or can find a green sleeve and swap it I guess too but trimming shouldn't be an issue.
Also, I'm trying to figure this out but the O2 sensors are wired slightly different afaik. One source I talked to says they hook up but throw an O2 heater fault code so may be just as simple as shutting off that code. I guess the f-body sensors are powered and grounded directly whereas as a P59 pcm supplies the heater ground.
Also you have to make sure the p59 pcm has an IAC driver if you want to use drive by cable. Sounds like not all of them are drive by cable capable.
Also, I'm trying to figure this out but the O2 sensors are wired slightly different afaik. One source I talked to says they hook up but throw an O2 heater fault code so may be just as simple as shutting off that code. I guess the f-body sensors are powered and grounded directly whereas as a P59 pcm supplies the heater ground.
Also you have to make sure the p59 pcm has an IAC driver if you want to use drive by cable. Sounds like not all of them are drive by cable capable.
Can anyone shed some light on the O2 sensor wiring and heater codes? My setup is from a blue/red 0411 harness manual transmission. I have the 059 Drive By Cable 12589462 Serv no ECU with an O5 Avalanche fuel segment swap.
I have HO2S heater resistance codes that are coming up. Do I just turn the codes off on HP Tuners or what?
Also, when we are doing the segment swap should we do more than just the fueling segment?
11-14-2017, 05:24 AM
#163
Originally Posted by tictakman
Can anyone shed some light on the O2 sensor wiring and heater codes? My setup is from a blue/red 0411 harness manual transmission. I have the 059 Drive By Cable 12589462 Serv no ECU with an O5 Avalanche fuel segment swap.
I have HO2S heater resistance codes that are coming up. Do I just turn the codes off on HP Tuners or what?
Also, when we are doing the segment swap should we do more than just the fueling segment?
I have HO2S heater resistance codes that are coming up. Do I just turn the codes off on HP Tuners or what?
Also, when we are doing the segment swap should we do more than just the fueling segment?
As for segment swaps it just depends on what you’re running but I think that’s all you’ll need. Some guys have to do a segment swap for the transmission as well.
11-14-2017, 06:44 AM
#164
Gotcha. I was just worried about 02 readings if the codes were just turned off.
I only need the flex fuel part of the segment since I will be running a manual transmission. Ill see if I can get it all to work!
Thanks
I only need the flex fuel part of the segment since I will be running a manual transmission. Ill see if I can get it all to work!
Thanks
11-14-2017, 08:45 AM
#165
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You need the engine and engine diag segments. If you do both, I don't recall even having O2 errors. I have a P59 swapped into a 02 Sierra.
You can also do some rewiring if you'd like so that you CAN use the newer O2 sensors instead of the older style. I was told they are less expensive. In any case, for me, it was more trouble than it was worth so I just did the swaps and used the normal wiring. No problems here.
Currently I'm running a hex edited file that wasn't swapped at all. A little more tweaking to do.
You can also do some rewiring if you'd like so that you CAN use the newer O2 sensors instead of the older style. I was told they are less expensive. In any case, for me, it was more trouble than it was worth so I just did the swaps and used the normal wiring. No problems here.
Currently I'm running a hex edited file that wasn't swapped at all. A little more tweaking to do.
11-14-2017, 06:24 PM
#166
Ok, Ill be trying this out for next few days. At this point I just want to get it to idle right and to be able to drive around the neighborhood to get miles on the engine and turbos.
11-15-2017, 03:55 PM
#167
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Gen lll e85 Total noob here read all 9 pages I have a 2004 Z06 drivetrain running manual trans dbw. Wanted to know if I can use the Z06 ecm 12586243 dbw and run e85. I also see os what does it mean 
11-15-2017, 08:49 PM
#168
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OS= Operating System
01-22-2018, 12:25 AM
#174
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http://lt1swap.com/cable_conversion.htm
Here's some info to help, near the bottom is some O2 heater wiring info.
Here's some info to help, near the bottom is some O2 heater wiring info.
01-31-2018, 01:55 PM
#175
Hi !
I’m from French and I don’t understand everythig here, but I readed everthing on this topic.
I would run Flexfuel on my Camaro LS1 2000. So If I undersood correctly I need :
I can’t found a P59 here, so I need to found an used one online like ebay. If I found Express PCM the only one thing to be sure it’s a P59 and DBC it’s the (Serv. No. and Hwd. No.) Right?
With that, the P59 can run the Camaro great without tuning and repin, or I need to tune & repin some wires to correspond with the original PCM? There are some issues? Like gauge, tachometer, ABS, SES light, A/C or something with +00 Camaro? If yes, do you know which pin I need to repin?
If I tune with the 12216125 OS, what should I do exactly? Because I don’t have the 4L80e (& I don’t want too)
The sensor E85 information need to be wired at the pin 56 of red/green PCM connector right? The others one to ground and Ignition voltage 1 ?
What the benefits to run 3 Bar MAP Sensor than the 2 Bar ? (I don’t know what it’s on my LS1)
On the Blue connector of the PCM, I have “Not used” on 13-16 and the P59 (on first page) have some Electronic Throttle Control. It will don’t bother me? I guess not but I asking anyway ahahah
Let me know if I forgot something or if you don't understand my english
I’m from French and I don’t understand everythig here, but I readed everthing on this topic.
I would run Flexfuel on my Camaro LS1 2000. So If I undersood correctly I need :
- P59 PCM DBC Throttle (2005 Express PCM - Serv. No. 12589462 - Hwd. No. 12589161)
- 13577429 Sensor & Harness for it
- 12216125 Tahoe Flex Fuel OS
- ACDelco 12613412 injectors (Fit LS1??)
- Some fuel line fitting
I can’t found a P59 here, so I need to found an used one online like ebay. If I found Express PCM the only one thing to be sure it’s a P59 and DBC it’s the (Serv. No. and Hwd. No.) Right?
With that, the P59 can run the Camaro great without tuning and repin, or I need to tune & repin some wires to correspond with the original PCM?
That’s, is the good pinout for the P59? http://www.lt1swap.com/2003-07pcmpinouts.pdf
If I tune with the 12216125 OS, what should I do exactly? Because I don’t have the 4L80e (& I don’t want too)
The sensor E85 information need to be wired at the pin 56 of red/green PCM connector right? The others one to ground and Ignition voltage 1 ?
What the benefits to run 3 Bar MAP Sensor than the 2 Bar ? (I don’t know what it’s on my LS1)
On the Blue connector of the PCM, I have “Not used” on 13-16 and the P59 (on first page) have some Electronic Throttle Control. It will don’t bother me? I guess not but I asking anyway ahahah
Let me know if I forgot something or if you don't understand my english
01-31-2018, 02:06 PM
#176
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If you aren't running forced induction or only need 2bar of boost, you don't need the P59. The P01 with the correct OS can run 2bar and flex.
There is another thread on that around here.
There is another thread on that around here.
02-04-2018, 09:18 AM
#177
Hi !
I’m from French and I don’t understand everythig here, but I readed everthing on this topic.
I would run Flexfuel on my Camaro LS1 2000. So If I undersood correctly I need :
I can’t found a P59 here, so I need to found an used one online like ebay. If I found Express PCM the only one thing to be sure it’s a P59 and DBC it’s the (Serv. No. and Hwd. No.) Right?
With that, the P59 can run the Camaro great without tuning and repin, or I need to tune & repin some wires to correspond with the original PCM?
There are some issues? Like gauge, tachometer, ABS, SES light, A/C or something with +00 Camaro? If yes, do you know which pin I need to repin?
If I tune with the 12216125 OS, what should I do exactly? Because I don’t have the 4L80e (& I don’t want too)
The sensor E85 information need to be wired at the pin 56 of red/green PCM connector right? The others one to ground and Ignition voltage 1 ?
What the benefits to run 3 Bar MAP Sensor than the 2 Bar ? (I don’t know what it’s on my LS1)
On the Blue connector of the PCM, I have “Not used” on 13-16 and the P59 (on first page) have some Electronic Throttle Control. It will don’t bother me? I guess not but I asking anyway ahahah
Let me know if I forgot something or if you don't understand my english
I’m from French and I don’t understand everythig here, but I readed everthing on this topic.
I would run Flexfuel on my Camaro LS1 2000. So If I undersood correctly I need :
- P59 PCM DBC Throttle (2005 Express PCM - Serv. No. 12589462 - Hwd. No. 12589161)
- 13577429 Sensor & Harness for it
- 12216125 Tahoe Flex Fuel OS
- ACDelco 12613412 injectors (Fit LS1??)
- Some fuel line fitting
I can’t found a P59 here, so I need to found an used one online like ebay. If I found Express PCM the only one thing to be sure it’s a P59 and DBC it’s the (Serv. No. and Hwd. No.) Right?
With that, the P59 can run the Camaro great without tuning and repin, or I need to tune & repin some wires to correspond with the original PCM?
There are some issues? Like gauge, tachometer, ABS, SES light, A/C or something with +00 Camaro? If yes, do you know which pin I need to repin?
If I tune with the 12216125 OS, what should I do exactly? Because I don’t have the 4L80e (& I don’t want too)
The sensor E85 information need to be wired at the pin 56 of red/green PCM connector right? The others one to ground and Ignition voltage 1 ?
What the benefits to run 3 Bar MAP Sensor than the 2 Bar ? (I don’t know what it’s on my LS1)
On the Blue connector of the PCM, I have “Not used” on 13-16 and the P59 (on first page) have some Electronic Throttle Control. It will don’t bother me? I guess not but I asking anyway ahahah
Let me know if I forgot something or if you don't understand my english
02-04-2018, 09:53 AM
#178
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If you decide you NEED the P59 for whatever reason, like upgrading to 3 bar in the future, then you are in the correct thread and we can help you out.
I'm just trying to make this easy on you so you don't chase your tail with switching PCMs when it seems unnecessary.
02-04-2018, 11:39 AM
#179
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Hi !
I’m from French and I don’t understand everythig here, but I readed everthing on this topic.
I would run Flexfuel on my Camaro LS1 2000. So If I undersood correctly I need :
I can’t found a P59 here, so I need to found an used one online like ebay. If I found Express PCM the only one thing to be sure it’s a P59 and DBC it’s the (Serv. No. and Hwd. No.) Right?
With that, the P59 can run the Camaro great without tuning and repin, or I need to tune & repin some wires to correspond with the original PCM?
There are some issues? Like gauge, tachometer, ABS, SES light, A/C or something with +00 Camaro? If yes, do you know which pin I need to repin?
If I tune with the 12216125 OS, what should I do exactly? Because I don’t have the 4L80e (& I don’t want too)
The sensor E85 information need to be wired at the pin 56 of red/green PCM connector right? The others one to ground and Ignition voltage 1 ?
What the benefits to run 3 Bar MAP Sensor than the 2 Bar ? (I don’t know what it’s on my LS1)
On the Blue connector of the PCM, I have “Not used” on 13-16 and the P59 (on first page) have some Electronic Throttle Control. It will don’t bother me? I guess not but I asking anyway ahahah
Let me know if I forgot something or if you don't understand my english
I’m from French and I don’t understand everythig here, but I readed everthing on this topic.
I would run Flexfuel on my Camaro LS1 2000. So If I undersood correctly I need :
- P59 PCM DBC Throttle (2005 Express PCM - Serv. No. 12589462 - Hwd. No. 12589161)
- 13577429 Sensor & Harness for it
- 12216125 Tahoe Flex Fuel OS
- ACDelco 12613412 injectors (Fit LS1??)
- Some fuel line fitting
I can’t found a P59 here, so I need to found an used one online like ebay. If I found Express PCM the only one thing to be sure it’s a P59 and DBC it’s the (Serv. No. and Hwd. No.) Right?
With that, the P59 can run the Camaro great without tuning and repin, or I need to tune & repin some wires to correspond with the original PCM?
There are some issues? Like gauge, tachometer, ABS, SES light, A/C or something with +00 Camaro? If yes, do you know which pin I need to repin?
If I tune with the 12216125 OS, what should I do exactly? Because I don’t have the 4L80e (& I don’t want too)
The sensor E85 information need to be wired at the pin 56 of red/green PCM connector right? The others one to ground and Ignition voltage 1 ?
What the benefits to run 3 Bar MAP Sensor than the 2 Bar ? (I don’t know what it’s on my LS1)
On the Blue connector of the PCM, I have “Not used” on 13-16 and the P59 (on first page) have some Electronic Throttle Control. It will don’t bother me? I guess not but I asking anyway ahahah
Let me know if I forgot something or if you don't understand my english
Are you running a turbocharger or supercharger?
3-bar is for higher boost levels... 300 kpa. 2-bar is for boost levels up to 200kpa. If you will not be running very much boost, you don't need to run a 3-bar OS. This will enable you to keep your non-p59 PCM.
Currently your LS1 sensor/OS is a 1-bar system which will not read boost levels. So, if you are going to forced induction, then you will have to convert to a 2- or 3-bar system.
Someone correct me if I'm wrong.
02-04-2018, 01:44 PM
#180
Thanks of these answers !
The guy who tune the LS in France said to me that I need a PCM +2003 for turn flexfuel, because my PCM don't have the VE Table for it even he flash the Tahoe/Avalanche OS. That's why I'm confused (and he told me I have 1bar now).
The guy who tune the LS in France said to me that I need a PCM +2003 for turn flexfuel, because my PCM don't have the VE Table for it even he flash the Tahoe/Avalanche OS. That's why I'm confused (and he told me I have 1bar now).