Occasionally the vehicle will turn over, but will not start at all or it starts then dies immediately. The anti-theft light is NOT blinking. When I wiggle the wires by the fuse box in the trunk the car starts immediately. The fuel pump fuse and fuel pump relay in trunk fuse box have been replaced. I removed the trunk fuse box and I did not see any obvious signs of corrosion. An independent garage and a Chevy dealer could not find the problem. Please help!

 

I had the same problem with my 2012 replaced the fuse box in trunk worked great for ten months now doing it again