Well, I had a friend call me asking for help. Problem is that he is stationed on the other coast "right side". He was wiring electric fans in his 2004 GMC sierra 2500 and blew a 30A fuze in the engine compartment. Now he has the following OBD codes: P0753 - Shift Solenoid ‘‘A’’ (No. 1) Electrical P0758 - Shift Solenoid ‘‘B’’ (No. 2) Electrical P2761 – ???? Does anyone have any good electrical schematics or a good T/S guide.