1999 PCM wont validate Default Metric PIDS

Hi all!! It's been a long time since I've used EFILIVE. Many wonderful changes!! Getting back to a couple projects. :D


We bought this harness and PCM From PSI Conversion (PSIConversion.com). It appears to be a 1999 PCM. It's in a 1948 Ford Pickup with a 2003 LS6 and 4l60e. I can connect read and flash the PCM. When I validate the default metric PIDs only the first four CALC PIDS validate the remaining seventeen PIDs aren't supported?? No data comes through on scanning although it does connect to the vehicle. Is it me or the PCM

Would I be better off buying a 12200411 PCM off of ebay??

Thanks for all and any help!

Bink :D




World Manufacturer Index 1G1 General Motors Chevrolet - USA
Year of manufacture X 1999
Model YY Corvette
Engine G LS1
Engine size G 5.7 litre V8 SFI
Body 1 Two-Door Coupe Hardtop (27, 37, 47, 57)
Restraints 2 Active (manual) belts w/ driver & passenger inflatable restraint system - front & side
Plant 5 Bowling Green, KY
Sequence 123135 123135



VIN 1G1YY12G9X5123135
Engine 5.7L
Transmission Manual
PCM flash 512KB
Operating System 09373372
Calibration 9374961
OS ID BD
Cal ID
BCC CWMS
OS Level
Cal Level
Cal file name 9373372.calz
Cal file version 7.94
Cal file date 07 April, 2009
Operating System 09373372 $4D00
Engine Calibration 16263735 $258D
Engine Diagnostics 9357900 $0DC7
Transmission Calibration 16264134 $71D4
Transmission Diagnostics 16253323 $ACE7
Fuel System 16264551 $EA4B
System 16264766 $4B0E
Speedometer 9359157 $0767

Hey Bink, how's it going, good to see you back here :cheers:

Do you have FlashScan V1 or V2...?

Which V7 software build version do you have installed (Help->About from scantool or tunetool).

Hey joecar! It's good to be back ........I need to knock some cobwebs from my brain. :)

FlashScan V2
V7.5.7 Build 262

I did an uninstall, fresh install 7.5.7 262. Read the pcm. Scanned and scanner says it's 2 different vehicles. Read PCM is a 2000 Corvette and scanned is a 2002 Camaro. I would guess this has to do with PS1's recalibration/ID as Corvette?? All PIDs validated :) ..happy camper. Car has a split personality?

With the scantool, what does VIN say...? Is this the correct VIN...? Try setting the VIN again using the scantool.