Every 2000 miles
It should be on the passenger side if I remember right.
4 quarts WithOut filter change, 5 quarts with.
Information about the 1969 Chevy truck can be found on Wikipedia. There is a whole article on Chevy trucks and it includes specific information on the 1969 model.
You do it very carefully so that you don't break your car
Yes.
3
Yes
The wiring diagram for a 1969 Chevy C10 truck is located in the service manual. It outlines where each electrical component is located and how they are wired together.
Chevy chevelle.
3.48"
1969
1969