My 2000 Tahoe makes a sounds like an electric motor or some type of pump is running right after I start it. It does not always do it, but when it does it is very noticeable. Asked the dealership where I bought it and they said it was the fuel pump building pressure ( Quite normal). My concern is that it does not happen every time and if this is normal, souldn't it be consistant. Also it seems when I step on the gas peddle it stops. My brother has a 2001 Suburban, same engine, which is also the same engine as my 99 silverado 5.3 Liter, both do not make this sound. Should I be concerned????
