Help needed with self service RV wash west of Flagstaff, AZ

Thanks so much for the replies. I found a self service car wash in Flagstaff on Route 66 called "The Family Car Wash". All 4 bays were very tall and everything worked as it should. The car wash is easy to find.

Actually, looking at Google maps, there is a truck wash just before Kingman at exit 66 at Petro (truck wash looks like it is way in back after driving through the area where the trucks park) and at exit 59 by Love's (same side of freeway, just across a little road from Love's).

Don't know if these are self-serve.

Not a self-wash, but there is a Blue Beacon Truck Wash in Kingman, I-40 exit 53, next to Flying J. I just called them. Their guys do the washing. They told me the price, for example, for a motorhome 30+ feet is $35.