will an L32 and 4l60e play nice together?

[Yt24824]

Hello all,

New here, My name is Jason. I have played with SAUJP and the 98 era 727 ecms using tunerpro and MOATES tools. I am wanting to dig into a 2007 L32 from a Grand Prix but I would like to run it RWD and use a 4l60e.

I was told that I might be able to re wire the L32 to an older Camaro 3.8 PCM. Thus far I am having a hard time finding an XDF for the PCM that I have (12209624).

Can someone nudge me towards info that I can study? Or if I'm chasing a brick wall slowly and don't know it could you steer me in a different direction?

[zack4200]

Use Universal Patcher instead of Tuner Pro+XDF. It has much better support for P04 (the pcm used with most GM v6s from roughly 98-05).

If you don't already have reading/writing figured out, my recommendation is PCMHammer and an OBDXPro VX.

[Yt24824]

Use Universal Patcher instead of Tuner Pro+XDF. It has much better support for P04 (the pcm used with most GM v6s from roughly 98-05).

If you don't already have reading/writing figured out, my recommendation is PCMHammer and an OBDXPro VX.

Thanks for your reply. I do have an OBDX pro on order. If I am correct an XDF isn't so necessary because Universalpatcher works to create the XDF, then add some PCM hammer action to tune. Doing some research tonight the google machine suggests I can use an 0411 P04. Other research suggests I'll need a "Northstar" Throttle body for cable action. That's because the L32 is DBW. For my base file I should start with one from an L67? I'm asking for confirmation that my current thinking is on the right path.

[vlad01]

Here in Aus, the L67 only existed with the 4L60e from factory, so it you get stuck for options, maybe using one of our well supported PCMs could be a good alternative.

[antus]

Note that you'll need a test version of pcmhammer for p04. the current official release doesnt support it. Its on me to clean some things up and get some kind of release out there, but if you are technical you can create a github accountband go to pcmhammer and click actions and go to the latest one and download an artifact from there. That will do p04.

[Yt24824]

Note that you'll need a test version of pcmhammer for p04. the current official release doesnt support it. Its on me to clean some things up and get some kind of release out there, but if you are technical you can create a github accountband go to pcmhammer and click actions and go to the latest one and download an artifact from there. That will do p04.

Thanks for your reply. I have some other projects ahead of this ECM portion. The engine/transmission is going into an old jeep that is churched up a bit and heavily modified. I figured no time like the present to start studying up on it though. Some of my concern is that it looks like the P04 does PWM fuel pump control. I haven't seen, or yet found that a P04 can, in theory, be segment swapped for the 4L60E control with the L32. When I started reading here I do have hope though. The HPT forum seems to steer off to other sites once certain parameters get tuned. I thought I read that the 2007 GP used a TCM along with the PCM. I sort of thought "eh, maybe just a PCM tune to make them play nice.

I have read about the P04 having CAN communications with other devices. I don't recall seeing any "twisted pair" type architecture on the wiring diagrams though. Maybe I'm just used to seeing J1939 type systems that have more elaboration for the J1939 backbone?

[Yt24824]

Here in Aus, the L67 only existed with the 4L60e from factory, so it you get stuck for options, maybe using one of our well supported PCMs could be a good alternative.

Could you give me the names or codes for the "well supported" PCMs you are referring to? I wouldn't necessarily be opposed to a PCM with an AU accent, but if I could keep it in feet/inches/gallons maybe that'd be better....

[vlad01]

Not really versed with these newer PCMs, but pretty sure this is the modified factory code here.

viewtopic.php?f=27&t=2518

I think then it's the usual NVRAM upgrade and then a plugin in tunerpro, ALDL cable and away you go, real time tuning.

But you will lose the ability for DBW as we never had that on any of the non LS cars, it was all cable, but cable is good. You probably will need to mod the SC intake to allow an elbow of sorts for a throttle that clears the firewall, so the need for a DBW might not even be a consideration given those points mentioned.

There are wiring harnesses on ebay here in Aus from these cars, or otherwise you could just buy the connectors from one of your local ones like EFIConnection ( I used them a lot for my parts here in Aus) and wire one up from scratch to suit your car, there are plenty of documents for the wiring diagrams etc.


Look at the FAQs on the forum, Antus has the link on his sig just a few posts up. I went there to find all the Aus stuff right away. The forum was entirely built around these Aus PCMs and ECUs well before other more general stuff came about later. So all of that early development on our local market is very well covered here. That is why I suggested it as it's so well documented and supported and your project sounds much like our normal factory cars.

[zack4200]

Thanks for your reply. I have some other projects ahead of this ECM portion. The engine/transmission is going into an old jeep that is churched up a bit and heavily modified. I figured no time like the present to start studying up on it though. Some of my concern is that it looks like the P04 does PWM fuel pump control. I haven't seen, or yet found that a P04 can, in theory, be segment swapped for the 4L60E control with the L32. When I started reading here I do have hope though. The HPT forum seems to steer off to other sites once certain parameters get tuned. I thought I read that the 2007 GP used a TCM along with the PCM. I sort of thought "eh, maybe just a PCM tune to make them play nice.

I have read about the P04 having CAN communications with other devices. I don't recall seeing any "twisted pair" type architecture on the wiring diagrams though. Maybe I'm just used to seeing J1939 type systems that have more elaboration for the J1939 backbone?

The P04 does *not* have separate segments that can be swapped around like in the LS P01/P59, but you should be able to take a Camaro/Firebird NA 3.8/4L60 bin and an L67 Grand Prix/Monte Carlo/Impala etc bin and open them side by side and make the necessary changes in the NA bin.
The NA 3.8 in the F body was also DBW from 99-02, so I would think that will play nice with the L32 TB but can't say for sure. 98 F-body was DBC, so I'd think a bin from a 98 will work if you want to go the cable route.
Plus from what I've read on here, there's a lot of similarities between all of the various P04 bins,

There's no CAN communication on the P04, they used J1850 VPW (in a lot of the wiring diagrams, GM calls it Class 2, if you're trying to locate it. It's just a single wire protocol so no twisted pairs) for communication with BCM, ABS, instrument cluster, etc. It is possible there were some vehicles that had CAN on other modules and then the bcm or something "translated" between the two networks, but I'm not remembering any like that off the top of my head. Once you delete VATS and change the cooling fan settings to not use BCM control, the P04 is perfectly happy to run standalone without any other modules present, though.

The 2 speed PWM fuel pump control is going to be bin specific, most of the 3100, 3400, and NA 3.8/3800 were just a regular fuel pump on a relay but the L67 also had a PWM output. It was used to reduce the amount of fuel recirculating and getting heated at idle, shouldn't cause too much drama if you just go with a single speed pump.

https://docs.google.com/spreadsheets/d/ ... p=drivesdk this might be helpful for you, it's just a comparison of the pcm connector pinouts from several different p04 vehicles. I can't take full credit for it as someone else on here (ejs262 I think) originally put it together and I just added a few more vehicles

[Yt24824]

Thanks for your reply. I have some other projects ahead of this ECM portion. The engine/transmission is going into an old jeep that is churched up a bit and heavily modified. I figured no time like the present to start studying up on it though. Some of my concern is that it looks like the P04 does PWM fuel pump control. I haven't seen, or yet found that a P04 can, in theory, be segment swapped for the 4L60E control with the L32. When I started reading here I do have hope though. The HPT forum seems to steer off to other sites once certain parameters get tuned. I thought I read that the 2007 GP used a TCM along with the PCM. I sort of thought "eh, maybe just a PCM tune to make them play nice.

I have read about the P04 having CAN communications with other devices. I don't recall seeing any "twisted pair" type architecture on the wiring diagrams though. Maybe I'm just used to seeing J1939 type systems that have more elaboration for the J1939 backbone?

The P04 does *not* have separate segments that can be swapped around like in the LS P01/P59, but you should be able to take a Camaro/Firebird NA 3.8/4L60 bin and an L67 Grand Prix/Monte Carlo/Impala etc bin and open them side by side and make the necessary changes in the NA bin.
The NA 3.8 in the F body was also DBW from 99-02, so I would think that will play nice with the L32 TB but can't say for sure. 98 F-body was DBC, so I'd think a bin from a 98 will work if you want to go the cable route.
Plus from what I've read on here, there's a lot of similarities between all of the various P04 bins,

There's no CAN communication on the P04, they used J1850 VPW (in a lot of the wiring diagrams, GM calls it Class 2, if you're trying to locate it. It's just a single wire protocol so no twisted pairs) for communication with BCM, ABS, instrument cluster, etc. It is possible there were some vehicles that had CAN on other modules and then the bcm or something "translated" between the two networks, but I'm not remembering any like that off the top of my head. Once you delete VATS and change the cooling fan settings to not use BCM control, the P04 is perfectly happy to run standalone without any other modules present, though.

The 2 speed PWM fuel pump control is going to be bin specific, most of the 3100, 3400, and NA 3.8/3800 were just a regular fuel pump on a relay but the L67 also had a PWM output. It was used to reduce the amount of fuel recirculating and getting heated at idle, shouldn't cause too much drama if you just go with a single speed pump.

https://docs.google.com/spreadsheets/d/ ... p=drivesdk this might be helpful for you, it's just a comparison of the pcm connector pinouts from several different p04 vehicles. I can't take full credit for it as someone else on here (ejs262 I think) originally put it together and I just added a few more vehicles

Thank you for the tips. I think I'm going the P59/northstar TB route. I read today about the single wire Class two. Seems like a challenge with what may have "proprietary" messages coded.