My 2003 Silverado 1500HD gets 12 City and 15 highway.
Not great, but lots of hauling power.
classic '99? If not then yes, most I think.
Yes they are interchangeable.
13 city 16 highway
One source says 6100 lbs. for a 1994, but I cannot confirm this. The oldest weights I can confirm are 2006: Silverado 1500 6900 Silverado 1500 SS 6200 Silverado 1500 HD 8600 Silverado 2500 HD 9200 Silverado 3500 HD 11400
how do i doit is their any special ways how to doit
Yes.
Yes
A pick up truck made by Chevrolet.
How do you un lock a raido on a 2003 chevy silverado
There is no "reset" button for the fuel pump on GM products. That's a Ford thing.
It is inside of the gas tank.
On the side of your truck it will say 1500HD if its an HD, it will say 1500 if it is a regular. Also your wheels will have 10 lug nuts on them if its an HD. Hope this helps.