this is from my 89 but same on your truck
10mm is the common for the top of the fender
bring a socket set though plus a phillips head screw driver.
there are 2 bolts u can only see by opening the door 2 different sizes
The screw driver is to remove the splash shield. Then there is one bolt at the door toward the ground on the outside
These pictures the bolts have been removed but they show where the location is
Plus these I circled in red I don't know how u get them I removed the whole front end before I took the fenders off[/B]
Top bolt with door open
Bottom Bolt door open