Oh wow, this is sad. I've been buying Craig's products since 2003 and still use them to this day.
This is a huge loss.

Craig, if you're reading - thanks soo much for your contribution to the DIY...

This is a real shame. I'd be lost without my Ostrich. I was just about to buy a few G1's too!

Ok, I have confirmed that the PS switch is involved in the AC clutch control in the 2.2L S10 just as FAST355 has stated.

So my hurdle at the moment is to get the PCM to recognise the PS switch...

Hey Fast355, good to see you're still around and have some interest in the old junk :)

I had determined that the 2.2 has a PS switch on pin F8, but I did not know or expect it would play any part...

Yes that's the same one I found elsewhere.
Thanks for the link, there's a wealth of handy info there!

I'm making some progress. Have now found a drawing and confirmed that pin E3 is used for the AC clutch relay control on the 2.2L S10 !

Now to make sense of the prerequisites and parameters to get...

Thanks Dave. I was aware of all of those except I didn't know the $31 was used in the Hummer. It's different enough that it may actually provide something useful if I can find some PCM pinout info....

Thank you!
It's the same with respect to the AC control, but it does use the CPI manifold valve on pin B3 which is interesting.

Because the code has a bit which allows a choice of EITHER A/C...

Thanks Dave. I hadn't seen any diagrams for a '94 w/4L80e, but it seems they are the same as the other trucks where the only link with the PCM is feedback to indicate the compressor is engaged.
I...

Yes that's correct. I have it running that way currently.
The PCM knows when the clutch is energised, turns on the 'AC Requested' flag on the ALDL and adjusts the idle speed etc as per the AC...

Hi Guys,

Is anyone else still playing with the '93-95 TBI PCMs?
I've had one in my 383 '84 Corvette for over 18 years. It now got a WBo2 input, fan control, 4L60e etc etc.

I see that the code...

Hi Dave, yes I have had a brief play with the BlueCat tool and used it as a guide to adjust my tables from a truck $E6 tune to be more suitable for a Corvette :)

For anyone who may have the same query and find this post via a search:

I did some experimenting and figured this out.
The 'normal table' seems to be active when shifting automatically.
The...

Hi Guys,

I've recently put a 4L60e into my 84 Corvette and I'm messing around with the tune.
In the hac released by dimented24x7 some years ago, there's two 'Line Press. Offset vs TPS vs Gear'...