$8c 1995 4.3 cpi?

[dave w]

I'm wondering if anyone has or can point me to a $8C definition file. Application is 1995 S-10 Blazer 4.3 CPI.

dave w

[EagleMark]

Have you tried using the $0D adx? That is what it comes back as for that truck.

[EagleMark]

I have that bin and looked at it in $0D and looked like it would work until I got to the fuel tables?

I also have an $8C and $8CB XDF, neither of which work for that bin. No hack found for $8C...

[dave w]

I have that bin and looked at it in $0D and looked like it would work until I got to the fuel tables?

I also have an $8C and $8CB XDF, neither of which work for that bin. No hack found for $8C...

The $OD.ADX might not be correct, see attached .xdl's. The spark advance is WEIRD!:yikes:

dave w

[EagleMark]

There's a lot more wierd then spark advance... I can't find any other ADX for it, or an accurate $8C to read the bin, lots look good with $0D till you get to tables.

Since it's a 16197427 how about a $0D bin to start?

[dave w]

It hurts me to write this ... TunerCats offers $8C. Maybe I need to use DataMaster TTS for this Tune? I think $8C might have some parameters for the electronic transfer case? Not sure if $OD would good option just yet.

dave w

[RobertISaar]

if tunercat does have the correct 8C(and it wouldn't be the first time they've mislabeled an odd calibration), then it could be converted to a tunerpro XDF....

just saying.

EDIT: ask tunercat to send your BIN their way and have them verify that the XDF is correct for it.

[EagleMark]

TunerCat does have an $8C and $8CA for those trucks.

But I have an $8C but it came in a folder marked "8C 1227748 90 2.5TBI L68" and $8CB that don't work...

EDIT: From the ADX/XDF Lookup "16245358 27C512 $8C 95 C & K Truck, Van, 4.3L $8C.xdf Maybe OBDII ? A309.ds or A217.ds ?

So what PCM is it?

[dave w]

TunerCat does have an $8C and $8CA for those trucks.

But I have an $8C but it came in a folder marked "8C 1227748 90 2.5TBI L68" and $8CB that don't work...

EDIT: From the ADX/XDF Lookup "16245358 27C512 $8C 95 C & K Truck, Van, 4.3L $8C.xdf Maybe OBDII ? A309.ds or A217.ds ?


So what PCM is it?

The PCM 16197427. OBD1 ALDL.

dave w

[1project2many]

I have a definition file for that mask but it's not an xdf file. Is there an easy way to do the conversion? Xfer case electronics are handled by an independent module. The only PCM input for Xfer case is "4wd low." Mark, if you send a copy of that cal I can look at it to confirm this definition's right.

[RobertISaar]

TDF, ECU or something else?

[EagleMark]

I have a definition file for that mask but it's not an xdf file. Is there an easy way to do the conversion? Xfer case electronics are handled by an independent module. The only PCM input for Xfer case is "4wd low." Mark, if you send a copy of that cal I can look at it to confirm this definition's right.He posted the one from the PCM above.

[1project2many]

Sorry. File name was "0D" and I was looking for $8C. Will check tomorrow.

Robert, Tango Delta Foxtrot.

[EagleMark]

Robert, Tango Delta Foxtrot. You been hanging out with the police? :laugh:

Yeah it says $0D in file name but it is an $8C in hex mask ID, comes out correct in an $0D mask but spark and fuel tables are off?

[RobertISaar]

perhaps he knows of my (thankfully) short military career? :D

[1project2many]

You been hanging out with the police? :laugh:

Not lately!

Thanks to Robert for his invaluable help in getting the attached file made.

[dave w]

Thanks to Robert for his invaluable help in getting the attached file made.

What he said X2!!

dave w

[dave w]

Just wondering if there is an adx file for $8C?

I did a data log using the A217 $OD TP5 V250.adx which seems Ok? Maybe the $OD .adx is Ok, like the $OE / $31 use the same .adx?

dave w

[EagleMark]

EDIT: From the ADX/XDF Lookup "16245358 27C512 $8C 95 C & K Truck, Van, 4.3L $8C.xdf Maybe OBDII ? A309.ds or A217.ds ?

So what PCM is it?I'll look into the A309 if I get some sleep tonight...




Thanks to Robert for his invaluable help in getting the attached file made.X3 another one in the toolbox! :thumbsup:


Just wondering if there is an adx file for $8C?

I did a data log using the A217 $OD TP5 V250.adx which seems Ok? Maybe the $OD .adx is Ok, like the $OE / $31 use the same .adx?

dave w




EDIT: From the ADX/XDF Lookup "16245358 27C512 $8C 95 C & K Truck, Van, 4.3L $8C.xdf Maybe OBDII ? A309.ds or A217.ds ?

So what PCM is it?I'll look into the A309 if I get some sleep tonight...

[EagleMark]

Looks like A309.ds was last of an era for ALDL data Streams, it was sad to read what was in the file! :sad:


07/01/94 - Due to G.M. Management indecision, I am unable release data for
the 95' OBD-II truck, and have no idea when or how this data will
be released.

Bret Henson
G.M. Data Stream Information Guy


I don't know Bret Hanson, but I really liked him...

Without a disassembly of the bin we could not even find where the data is going?

This brings up the topic of OBDI.5, which I've always said was a mythological creature created by Internet! But now we have OBDII in 1995?

Now I'll never sleep... :mad1:

ScanXL is software being sold by Westers Garage to take place of their OBDII ECMPro (which I believe is the dead Monodax OBDII data software for TunerPro OBDII), I plan on ordering ScanXL come PayDay to go with my Innovate Ot-2 OBDII data logger for LogWorks. But maybe for now you could use a Scantool?

Does DataMaster have one?

[dave w]

Does DataMaster have one?

The DataMaster TTS website is only showing TBI $OD, $OE, $E6, & $31.

I find it very interesting that my licensed version of DataMaster TTS $E6 seems to also work with $OD, $OE, & $31. Six years ago, DataMaster TTS was about the best data logging software around for the GM TBI PCM, but the steady advances with TunerPro RT .adx data logging has changed that! The only thing left to say about DataMaster TTS is R.I.P.

dave w

[EagleMark]

DataMaster was great and still is, but very limited as well.

What's the reason you haven't just stuck an $0D bin in there?

[dave w]

What's the reason you haven't just stuck an $0D bin in there?

It's not my own personal vehicle. The vehicle owner is not very experienced with EFI. The vehicle owner wants a custom chip, just like the "Brand Name" aftermarket chips.

I'm wondering, is there a factory 4.3 CPI $OD .bin for the 4L60E with electronic 4WD?

dave w

[EagleMark]

It's not my own personal vehicle. The vehicle owner is not very experienced with EFI. The vehicle owner wants a custom chip, just like the "Brand Name" aftermarket chips.

dave wOh! That's easy! Make big claims, add 1 or 2 degrees timing to a few places, add a little fuel to a couple places, I believe 7 insignificant changes are all that is neccessery... then collect $250. :laugh:




I'm wondering, is there a factory 4.3 CPI $OD .bin for the 4L60E with electronic 4WD?

dave w

I have a definition file for that mask but it's not an xdf file. Is there an easy way to do the conversion? Xfer case electronics are handled by an independent module. The only PCM input for Xfer case is "4wd low."
Since 1project2many said this, I would say no problem! At least then you could actually give him a good tune!

This is probably the worst OBD? disaster I've seen! Defiantly a freak. What exactly is the year make model? I want to put it on my Black List... but then again I think a normal $0D would solve the transitional OBDI to OBDII experiment GM created?

[dave w]

I've read a 1994 4.3 CPI / Auto .bin file. It's $OD.

dave w

[EagleMark]

Only 140 realistic byte differece to BHRJ so why were we looking for a differant mask?

[dave w]

I'm wondering, is there a factory 4.3 CPI $OD .bin for the 4L60E with electronic 4WD?

I was looking for a $OD .bin file to convert from $8C, but I don't know if BHRH has electronic 4WD?

dave w

[1project2many]

I had a 94 Jimmy 4.3 CPI and electronic shift Xfer case. Cal is attached. I also have a cal for a 94 listed as "Without CTF INTERIM DESIGN CHGE VEH. OPT. LABEL FOR VERIFICATION" but I still don't know what that option means. It might indicate the new body style vehicle.


FWIW the electronic shift is nothing more than a motorized version of manual shift. The controller is activated by a button on the dash and the motor (encoder) makes an appropriate shift. Shifter position is reported back to the controller and if there's an error the controller reports this to the driver by flashing the 2wd / 4wd lights (different years provide different lights), setting a code within the controller, and locking out electronic shifting. When everything is working correctly the 4WD lo input tells pcm to enable low range calibration values and that's all that the pcm requires. The pcm has no idea or inclination to care how the xfer gets into or out of 4wd low, it only cares about whether or not that's the current state.

The 95 blazer was billed as a limited OBDII compliant vehicle. I own one. It was only called OBD1.5 by the internet experts.



Super special EFI power chips are not effective unless they come with big warnings that say "Use 91 octane fuel only!" and "Use with 160 deg thermostat." The big money chips also get a 1" by 3" decal with two or (if you're lucky) three color logos!

[EagleMark]

BHRJ came in a 16196395 and was Superceeded to BPLB with a 16197427 PCM...

[Fast355]

There are some 1995 GM 4.3 TBI/CPI S10 applications floating around out there that have an OBDII connector, 96+ Vortec Black box style PCM, distributor and ignition control module along with the crank sensor. Some of these trucks also had missfire detection, catalyst monitoring, and evap pressure testing. Some can be read by an OBDII reader, but most require a scanner capable of reading 94-95 GM OBD1 Enhanced. My grandmother had a 1995 Oldsmobile Achieva with the 3100 that was also OBD 1.5.

[JeffStrachan]

Oy! Oy! Oy! That's what I'm talking about. I'm looking for answers for my 95 Blazer ZR2. PCM 16193495. This is the closest I've found to someone who understands the interface.
http://www.gmforum.com/1992-1999-91/dreaded-obd-1-5-thread-got-94-95-pcm-look-here-260037/

There's also a 'Euro' or 'Export' part wrt the transmission in the pcm, I think.

It's CPI, vortec, and anti-knock w/crank sensor and distributor inductive pickup

[RobertISaar]

the 3495 is the really goofy one, isn't it?

i want to say that is one of GM's early OBD2 implimentations if it's the one i'm thinking of.

[Fast355]

the 3495 is the really goofy one, isn't it?

i want to say that is one of GM's early OBD2 implimentations if it's the one i'm thinking of.

That would be the goofy black box CPI/TBI underhood PCM

[dave w]

That would be the goofy black box CPI/TBI underhood PCM

Any information on how to Flash a '3495? Maybe a link for .dxf & .adx for the '3495?

dave w

[Fast355]

Any information on how to Flash a '3495? Maybe a link for .dxf & .adx for the '3495?

dave w

The only one I ever came across that I touched was a V8 swap and I took a V8 Vortec C1500 harness and reworked both harnesses to merge the V6 S10 chassis harness to the V8 engine harness to run the L31.

[James]

Was there ever a ADX file that works with the 16193495 BABB ?

[1project2many]

Not as far as I know. Even GM's own dealer level hardware was a kluge for that vehicle. You'd use a Tech 1 or 1A with a special adapter to read ALDL data. It was semi-OBDII compliant. Generic OBDII readers would sometimes work, sometimes not.