When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Only has a pre-cat sensor, unless they changed something. Located almost on top of the y-pipe pointing a bit towards the right side frame rail. Yes you have to be under the truck. It's a bitch to get to and like most O2 sensors on older cars, it's probably pretty well seized. GOod luck.
Also you have the 5.9L not the 5.7 unless it's been swapped.