Halfcent

The following is a list of the different computers used in different Ecotec installations. Pin out diagrams that I could find are lower in the thread.

Notes:
"PCM" Powertrain controller, which can operate an engine and transmission. Computer starts with a "P"
"ECM" Engine controller only. Computer starts with an "E"
"TCM" Transmission controller. Only in vehicles with an automatic transmission. The device is a slave to the ECM. In manual transmission car, the TCM is not installed.

J-bodies:
2002-2005 L61 equipped cars:
PCM: P11

Deltas:
2003-2006 L61 Ions
2005-2006 L61 Cobalts
ECM: E16A
TCM: T42

2007-current model L61 Cobalts, Ions, G5's
ECM: E37
TCM: T42

2004-2006 model LSJ Ions
2005-2007 model LSJ Cobalts
PCM: P12
Note: The P12 unit could in fact operate a transmission in this application. It is simply not used. However, somebody using HP Tuners on this computer will find variables for it on the 2005-06 cars. In 2007, they removed those variables.

2006-current model LE5 Cobalt, G5's
ECM: E67
TCM: T42

2006-current model LE5 Sky, Solstice
ECM: E67
TCM: ? (5L40E trans)

LNF Cars:
Sky Redline
ECM: E69

Credit to Witt and WopOnTour for some research notes.

All of the above computers are supported by HP Tuners except for the E16A. The E37 and E69 are in beta test right now, but not yet available in public release. The E16A is reported by HP Tuners as being scheduled for support in the first half of 2007. It is also reported to be supported by SCT Flash as part of the Garrett turbo package release in first quarter 2007.

Witt

LE5's use an E67pcm. Similar to tuning an E38, but with VVT parameters. Speed density tuning is completely different in both ie no conventional VE table.
edit: LSJs use a p12 PCM.

I'll get more in a few minutes.

Witt

03 L61 ions are "believed" to use the same pcm as 04-06, but have a different OS i think, ill see if i can dig the thread up from the hpt forums on it.

here it is, it was one of your threads halfcent. http://www.hptuners.com/forum/showthread.php?t=6128

Witt

LNF Kappas use an E69 ECM.
LE5 Kaps use the E67

Witt

The P12 note is redudant, its a PCM, its supposed to be able to operate a transmission. I'm assuming you mean TCM parameters.

WopOnTour

I disagree that the footnote should be considered "redundant"
I personally think it is somewhat interesting it's a PCM used on the SS/SC and IRL models that do NOT have an automatic transaxle as an option (Unlike the J-body for instance) and illuminating the possibility that perhaps someone might want to attempt to take advantage of those dormant controls at some time. (Should all the neccessary hardware exist of course) :wink:
Wop

Halfcent

Looks like all I need is the TCM's. Thanks for the help so far.

Do we know if HP Tuners supports the LNF E69?

Witt

Ok, now that I read it again, I see whats being said. The note seemed like it pointed out that the PCM was unusual because it contained transmission controls. Its just that they all do and not one is being used in that capacity, I think that is what you're saying.

Witt

As of now, HPT does not support the LNF Kappas or the TCM in the LE5 Kappas.

WopOnTour

TCM used in the 2003-2006 Cobalt/ION/Pursuit/G5 equipped with a 4T45E is known as a T42
(Still checking on 07)
Wop

Halfcent

I would like to expand the thread by asking which of the listed cars uses the GM CAN bus? I know not all of the Cobalts do.

WopOnTour

All Cobalt's use CAN (GM LAN) to some extent.

A 2.2 or 2.4 Cobalt uses both GM LAN High Speed and Low Speed bus networks.

The 2.0 LSJ also has GM LAN however the P12 PCM is "primarily" Class 2 (J1850 VPW) for items such as service programming as well as diagnostics and and scan tool interface. But the LSJ PCM is still connected to the GM LAN network (High Speed) to provide certain multi-plexed feature functionality such as Theft Deterrant. Items such as radio and the IP Cluster on the Low Speed GM LAN network.
HTH
WopOnTour

PS>LNF Engine Managment is actually Bosch MED9.6

Here's a schmatic showing the HS GM LAN for the 2005 Cobalt

Halfcent

We now have Pin-Out diagrams for several model Ecotec ECM's. Follow the links:

02 Alero
02-05 Cavalier / Sunfire
03-? Ion
05-07 Cobalt LSJ
05-06 Cobalt L61
06 Solstice
07 Solstice

smartmlp

iTrader: (1)

I just wanted to point out that your listing certain modules as "PCM" and "ECU" does not match up to what that above document says. IE: it calls the 2005 L61 computer a PCM while you call it a ECM in your first post. What is correct?

WopOnTour

That's a pretty nice catch!
Looks like 1/2 just has the links for the LSJ and the L61 switched up is all
WOT

Halfcent

I didn't notice that before, thanks for pointing it out. Fixed the links.

ransd2054r

WTF does all this exactly mean?? lol

2002-2005 L61 equipped cars:
PCM: P11

this is me. i have a 2.2....hptuners doesnt support this, so whats the deal?

Halfcent

It means that if you have an Ecotec powered J-body car, which is a Cavalier or Sunfire, your engine is managed by model P11 PCM computer. And yes, HP Tuners DOES support that car.

Cobalt_Supercharged

Any updates for the '08 models? Thanks

WopOnTour

Carry over from 07 (well except the P12 was dropped along with the LSJ)
Wop

Cobalt_Supercharged

So the E67 is still used in the Solstice? I'm trying to find out if HP Tuners will support the 08 or not.

cawpin

Well, I haven't been on here in a while. Are the 2007 L61 cars supported by HP Tuners yet? the first post says it was last edited on 8/11/2007 and it still says the E37 is in beta. Is this still the case? I may be trading my 2006 in for a 2007 or 2008 model and the tuning is an important consideration for me. I've been screwed out of tuning on this Cobalt and my previous 2003 Cavalier. I don't want to deal with that again.

Halfcent

No, it is still not supported. You can always check the HPT web site directly to view the current version and supported vehicle list.

We are actually more hopeful about SCT supporting the car. They have a tune for the Garrett turbo kit, but have not included the support in their tuner software. That is our best hope.

cawpin

Thanks for the information. You've probably answered that question a hundred times and I appreciate it. Is SCT also going to have support for the E16 in my 2006? I'm gonna look it up now.

XM15

The ball is in Garrett's court. They paid SCT to crack the E16, so they get to hold onto it. SCT can't release anything without them giving the thumbs up.