Well they are both white boxs and they both have the same plug. But inside DRAC is one set of jumpers, inside VSSB is 2 sets of jumpers. If you plug a DRAC into a VSSB system it melts the new DIP...

FYI DRAC on 1227747 and VSSB on 16197427 and they do not interchange.

I've done this and is working quite well. I did it because someone elsewhere said it could not be done. That said I will never do it again to save $80 for a VSS... way to many hours tuning to work...

Thank you and done! :thumbsup:

So when is the DIS hac coming out for V8? :innocent2:

Looks like that transmission code was also used in a diesel application. Im my LT1 it is simalar to these PCM that it has engine data and transmission data although I have them in same adx, need to...

I don't know but I have one that works and shows when in use in adx on my LT1.

I had forgot about this, harness was done months ago, going in truck Thursday so I have time to wire this in! :thumbsup:

Yup. Basically same PCM $OD, $OE, $E6, $31.
http://www.gearhead-efi.com/Fuel-Injection/showthread.php?336-16168625-PCM-Information-E6

Does anyone know how the shift light works on a manaul from pin A7 (7747) to E2 (427)? Is it set to come on at certain RPM?

Wiring Diagrams for the 16197427 and 16197395

[attachment=0:q15r09ib]427-1.gif[/attachment:q15r09ib]

[attachment=1:q15r09ib]427-2.gif[/attachment:q15r09ib]
...

I stole this information from Dave W. Writeup on CK5
http://coloradok5.com/forums/showthread.php?t=270253

He also got information from Thirdgen.org to start and I think the origanal was written...