Look up under the front bumber and you will see a black plastic cover that is like a small door, open it up and you will see the oil filter.
thers a panel in the front underneth that says oil filter hatch 99'blazer lt 4wd
if its a 4.3 its either in the bottom at the rear on the drivers side or driver side fender topside
If you go to the front of you Blazer and look underneath the bumper you will find an access panel for your oil filter
LF393
The 99 Blazer could be sluggish for several reasons. Check the air filter fuel pressure and EGR valve for a start.
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.
Will fit a 1997 Chevy Blazer
Grab the filter with your hand or a filter wrench and turn counterclockwise.
Could be a plugged fuel filter.
The oil pressure switch on a 1998 Chevy Blazer is on the side of the engine block. It is located above the oil filter.
Under the front of the vehicle behind a small door marked "filter".
oil filter is inside engine compartment front left fender by the head light