Originally posted by Tyson@Oct 13 2005, 08:26 PM
Grr... What a joke! Second PCM was a 5.3 but was a Vin Z flex Fuel. Not sure if it matters but I said Vin T or dont bother! Would it be possable to program the 99 PCM With 01-02 software at the dealer?
You can flash any 411 service number pcm with an 01/02 truck calibration. You can also use that 01/02 pcm in your 99 truck, but I wouldn't suggest trying to flash it with a 99 calibration. It will take, but I've seen weird things happen.
The Z vin/pcm you got isn't the right calibration either, the injectors aren't the same, you'll need to take it to the dealer and have it flashed with an 02 truck T vin. Make sure the 02 vin has the same gears and tire size as yours or your speedometer will be off.

If you want, send it on over and I'll flash it to any vin you want (or I'll provide one) for $50.

thanks,

allen