i ran out of gas the other day in my 99' tahoe. ive only had it for 2 months, and never saw the light come on, and i shouldnt have let it get that low anyways. my question is, does this truck have a gas light or not. my fuel guage is weird too...when i fill up, it goues about 1/4 tank PAST FULL. and when i ran out, it had just barely reached the red part. any help?