I have a 2007 Silverado 1500 Ext Cab. It has the 5.3 ltr engine and about 200,000 miles

I drove the car to an appointment, was there for 4 hours and when I came out the truck would not turn over. Dash light all came on and when you turn the key on the is a very hard to hear clicking noise like a relay is trying to work. There are no codes. I installed a new battery and there is no change.

I don't even know where to start looking, Help.

 

Check the battery cables for loose or corroded connections on both ends of the cables. Check the connections at the starter.

 

have someone hold the key in the crank position and try tapping on the starter, either the starter is bad or you have a connection issue from the sounds of it.

 

Done all of the above. Guess the next thing to do is buy a new starter.

Thanks for the suggestions

Gord