Piece of cake, do not believe the hype. It is easily accessible by using a wobbly socket extension.
i think it is the sensor located on the drivers side of the motor rite next to the middle spark plug.
Under dash, drivers side.
Under the Dashboard on the Drivers side, has a Plastic Cover.
gerflerbergab
under the drivers side on the frame
Should be along the frame under drivers seat.
On the drivers side of the throttle body.
It is on the drivers side of the transmission
Could be the driveshaft.
look at the info sticker inside drivers door. My 89 blazer came with 31x10.5x15 from the factory.
it is located behind the ciggeratte lighter. But you have to have the star drivers to be able to get to it
Drivers side, first one in front.