Good chance its located in the fuel tank.
Where is the fuel filter located on a 1998 Chevy Malibu?"
Its along the frame/railing under the driver side door, to the right.
how do I replace the inside door handle on a 1998 chevy cheyenne?
The oil pressure switch on a 1998 Chevy Blazer is on the side of the engine block. It is located above the oil filter.
What engine?
The oil filter is located at the back of the engine, under the power steering pump.
I believe 1998 was the last year for the cheyenne option package.
no
That would be a 4L60E
The tire size should be P235-75R -15. I have a 1998 Chevy Cheyenne 1500 4x4. Tire size is 265-75R-16
On 2000 it is in the rear of glove box --perhaps the same
You don't. It is done electronically.