I've got a 05 trailblazer that intermidantly wont crank. It acts like a low charged battery, as in all the lights on the dash come on just no crank, if I let it sit for say 12 hours it starts right up.I have changed the ignition switch and starter relay. It has to be driven before it wont start again. I left it parkdd all weekend and just periodically started it and it started every time. Does anyone have any ideas?

 

Did you have the battery tested?

 

Yes battery is brand new

 

Starter?