bought a 07 sierra truck in 2012 has been breaking due to electrical problems since i believe a month after we had it, had it to the dealer ship at least 6-8 times not counting it has to go back tomorrow for same isssue. they have changed things and kept it and cant figure out why it is doing what it is doing.. we paid 34 thousand payment wise of 322.00 a month ( just got it lowered refinanced was 375 a month ) and it will go from park to drive and lights will flash, locks in truck will lock and unlock mirror will flash all kinds of weird stuff on its electric part it wont now go out of low gear, it has stalled, died on us .. we bought a new battery last summer the org. one was from 2006 thought that might help but now is doing it again. we need two vechiles due to my husband working and i am disabled and have many appt and care for my mother who i run around for appt and my son is special needs and he has weekly appts and monthy doctor appts. tried to trade in and they are just jacking up extra on it and not being fair.. going to try again tomorrow if they are open due to the holiday to see what can be done, if not we dont know what to do .. we are honest hard working people and need a break please help ?