I just came across a very worthy PCM upgrade for a 99-00 (OBS, aka, Old Body Style) Escalades (ok, Suburbans, Tahoe's, Sierra's, Silverado's, from 96-99, known as the OBS trucks).
The PCM (or VCM as it is called) is quite the red headed stepchild of the flashable PCM world. Poor support, second only to the OBD2 LT1's of the PCM's that are actually commonly programmed with programs like EFILive and TunerCat OBD2/Jet Dynamic Spectrum Tuner and Wester's GMT.
So, what to do? Do you want coil on plug igntion??
Do you want a 2 bar or 3 bar MAP capability for the supercharger or turbocharger?
Do you want real time tuning capability?
Do you want valet mode to keep the kids at bay when driving your Lac?
Do you want Speed Density/MAFLess support?
This IS the mod for you!
Cost? Hard parts around $50 if you are careful and around 3-4 hours of your time to do some work. Then $75 + shipping to Jesse over at Wait4meperformance.com and explain the swap. He will work wonders for you.
So, what to do.
Swap in a LSx PCM. GM Part Number 12200411 is a nice swap. Very good aftermarket tuning support from EFILive, HP Tuners, LS1Edit, Jet Spectrum Tuner and Wester's GMT. You can do it!
All is needed is the programmed PCM itself, and the connector kit from GM, some info from the FSM's on the PCM pinout and you are set!
This is the single most best mod you can EVER do for your L31 or if you are nutty, a L29 in your Escalade!!
There is no reason this won't work in a NorthStar powered ride, but I would have to dig into it more. The issue is you might lose the FDC. But this PCM feeds it in the Corvette, so it is figuring out how to do it with making everything happy.
http://www.duramaxperformancechip.co...395eb142e3aac9 http://www.pacificp.com/forum/viewto...882ce4c30db396 http://forum.efilive.com/showthread.php?p=44510 http://forum.efilive.com/archive/index.php?t-276.html http://duramaximizer.com/forum/viewt...91f20401a51ceb
