GM 16216588 - Hacking

Post by **antus** » Tue May 10, 2016 1:29 am

No, not worth it. Technically you could wire one in, but its tedious. The nvram boards we have are designed to plug in to the existing memcal socket, but that pcm doesnt have one, so you need to wire it by hand. Then you would need to modify the operating system to extend the commands it can take to support write commands, and oseplugin is for aldl, so... not sure what would need to be done there... but some kind of avt style version for vpw would need to be created. Heaps of work...

quadstar87 · Post by **quadstar87** » Tue May 10, 2016 1:30 am

antus wrote:No, not worth it. Technically you could wire one in, but its tedious. The nvram boards we have are designed to plug in to the existing memcal socket, but that pcm doesnt have one, so you need to wire it by hand. Then you would need to modify the operating system to extend the commands it can take to support write commands, and oseplugin is for aldl, so... not sure what would need to be done there... but some kind of avt style version for vpw would need to be created. Heaps of work...

Ok that's what I thought I was reading about them. Wasn't sure if they flashed directly through the added board or thru the ALDL.

ejukated · Post by **ejukated** » Tue May 10, 2016 8:38 am

quadstar87 wrote:What are the chances I could setup one of these with an NVRAM instead of socketing the flash? Or are those not very universal?

Perhaps an emulator like the Moates Ostrich 2.0 for real time tuning?

quadstar87 · Post by **quadstar87** » Tue May 10, 2016 3:22 pm

ejukated wrote:
quadstar87 wrote:What are the chances I could setup one of these with an NVRAM instead of socketing the flash? Or are those not very universal?
Perhaps an emulator like the Moates Ostrich 2.0 for real time tuning?

It should work in theory. Would need a PLCC32->DIP32 adapter and a socket booster + the Ostrich though.

EDIT: It'd have to be a custom adapter that unscrambles the addresses because to tune in RT, you'd have to be editing an unscrambled BIN....

Good news is that I have learned almost everything I need to know via RT OBD-I tuning and logging over the ALDL and doing data-traces in TP. If I get some things working via an .ADX for the AVT, I can do data-tracing in these 128k bin's as well.

quadstar87 · Post by **quadstar87** » Thu May 12, 2016 3:07 am

antus wrote:These are closer to the vx/xy pcm, but with a vpw chip in them. They look the same, with different colour connectors. HC11 processor, 128k bins. Also running diesel engines. There is also an earlier version thats still ALDL but with more or less the same software on them. Chevy express vans I think. 6.5L.

These run all 6.5L GM engines between 96 and 2000. Trucks, vans, utility chassis, civilian HMMWVs, etc. They are everywhere and are greatly misunderstood. They were the original delco efi diesel I think.

It's an all in one ECM/TCM with the single flash chip unlike the similar Saturn implementation that has the 2 sided board.

Post by **Tazzi** » Mon May 16, 2016 3:36 am

quadstar87 wrote:
antus wrote:These are closer to the vx/xy pcm, but with a vpw chip in them. They look the same, with different colour connectors. HC11 processor, 128k bins. Also running diesel engines. There is also an earlier version thats still ALDL but with more or less the same software on them. Chevy express vans I think. 6.5L.
These run all 6.5L GM engines between 96 and 2000. Trucks, vans, utility chassis, civilian HMMWVs, etc. They are everywhere and are greatly misunderstood. They were the original delco efi diesel I think.

It's an all in one ECM/TCM with the single flash chip unlike the similar Saturn implementation that has the 2 sided board.

Hows this coming along? Has been a pretty good read

quadstar87 · Post by **quadstar87** » Mon May 16, 2016 4:20 pm

Tazzi wrote: Hows this coming along? Has been a pretty good read

Haven't made any progress in a few days. Was helping friends on a few other projects, but i'll be back at this within the week.

quadstar87 · Post by **quadstar87** » Tue May 17, 2016 5:41 pm

Can anyone suggest what replacement flash chips would work in case they get destroyed during de-solder? I'm thinking Intel AN28F010-120 but don't fully understand the access speeds that would be required by a PCM.

I found this nifty article and grabbed up an old Intel NIC for a few bucks so I can hopefully write the 'scrambled' bin back onto a chip to recover these PCM's
http://sandeen.net/fwfix/index.html I have this hooked up and running but don't have any de-soldered chips to play with...yet. I'll share up the modified fboot.exe once I have it working for the chip(s) that I use.

Here's my custom chip writer

IMAG3240.jpg

quadstar87 · Post by **quadstar87** » Tue May 17, 2016 7:36 pm

Also got in the wiring pigtails today to convert my ride to OBD2. The wiring is very similar to OBD1, so just need to pin these plugs onto my in-dash wires since the wire locations and locators on the plugs are skewed a bit. Will lose my RT tuning and data-logging for a bit until that's sorted out for the newer/VPW setup instead of 8192 ALDL.

Once PassLock is disabled, it'll be able to fire the injection pump as long as I don't miss any wires.

IMAG3241.jpg

ralcool · Post by **ralcool** » Wed May 18, 2016 6:09 am

I love neat little hacks like that.... its even cheaper than a plcc-dip adapter!

GM 16216588 - Hacking

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