When looking at the motor from the front, it will be on the passenger side of the motor, just under the alternator. It has a plastic pulley with the ribs in it for the belt. I believe it is a 14 or 15mm wrench that fits the bolt on it, to loosen it, you can use either a wrench, or you can get a long pry bar, put a block on the frame rail under the battey and put the bar on the belt side of the pulley and push the bar down, causing the pulley to move up loosening all the tension. It tends to be a be tight in there with a normal wrench, the fan can get in the way, but it is accessible. Once you do it a few times, you'll be able to change a belt in about 5 minutes. HTH

Dan