My wife's Tahoe is having a starting problem. The dealership is calling it an over start. This happens with either the Remote start or the key in the igintion. The motor cranks like and acts like it won't fire. The starter is grinding and you can smell gas. The dealership has replaced the fuel pump and the #2 fuel injector. They can't seem to figure out the problem. They said they are getting with GM headquarters to figure this out. If the truck sits over 4 hours the problem does not occur. If you drive to the store and come back out the over start happens. Any thoughts or suggestions. It has been in 3 times. I am about to start the Lemon Law process on this thing.