I have a 2002 camaro z28 m6, and once in a while it won't start I have taken it to the dealership and they can't find anything, when it doesn't start I can go under the hood and switch the starter and ignition relays and it will normally fire up. The relays aren't bad because I had them tested.
Other times if that doesn't work I can rock the car and it starts. I can't seem to find the problem if anyone has had a problem like this before, can u give me any advice? I think that it can possibly be the security system acting up but I am not a 100% sure.