First check the oil level and make sure it's not over filled.
If it's okay then you have what is called blow-by.
Needs a set of piston rings put in it. REBUILT
The oil pressure switch on a 1998 Chevy Blazer is on the side of the engine block. It is located above the oil filter.
on the oil pan...
Oil pan.
in the oil pan
The oil cap on a 1998 Chevy Blazer is located on the passenger side of the motor. It is just to the left of the manifold cover.
inside the oil pan
5w30
The oil sending unit on a 2001 Chevy Blazer is just above the oil filter. It is actually located on the diagonal to the oil filter to the upper left.
Mounted to the bottom of the engine in the oil pan.
in the oil; pan
Will fit a 1997 Chevy Blazer
A vehicle that has a 5.7 V8 with a throttle body.