mers Modified GTCP36-150(G) APU P/N 3800826-1, S/N P-465C with 6449.0 TSN, (0.0 Hrs Hobbs). Removed APU Electronic Control Unit (ECU) P/N 2118478.1, S/N 63, and installed new APU Electronic Control Unit (ECU) P/N 2119584-6002, S/N 32-W03312. Operational checks good. All work was performed IAW GIV AMM ch