I have a '98 two wheel drive. It doesn't do it all the time but it's happening more frequently. The rattle is coming from the underside of the truck and from my best guess is coming from rear of enginge/bellhousing area. My oil is clean and tranny fluid is not burnt. It costs 100 for engine diagnostic and another 100 for tranny diagnostic. Anyone have any insight? Thanks

 

check the heat shiled aroud the cat, and also the mufflers run close to the frame on theese trucks, i would also check that