We Can flash 99-09 GM LS Series Computers for the GM P59 PCM on the bench for plug and play operation.
GM Truck 4.3L 5.3L 5.7L 6.0L 7.4L 8.1L Engines
GM P59 Programming -$60 Plus return shipping

Programming  Service Only
VIN to Program
Year, Make, Model, Part Number

This is a programming service only. You the Customer must supply a COMPATIBLE PCM for us to program. Please include all customer contact info when shipping us the PCM that you would like us to program.