Truck won't start
We have a 2008 Chey Silverado 1500 Ext Cab 5.3
4x4..... and if it sits for a day or more without being
turned on it will be dead,.... we have change the
battery twice, the alternator, the starter .....had my
father Who used to be a mechanic back in the day
pin it out and he could find nothing so we took it to
the repair shop and changed the stop light switch
(which is what our mechanic said it was when he
put it on the machine)..... and after two months ,he
didn't drive it for two days and it still did the same
thing would not start ......
Please can someone help!!!!!