Got back from a 3000 mile trip towing my camper a few weeks ago. Truck ran great aside from the crappy gas mileage, about 7-8 mpg @ 70 mph. (BTW I can barely muster 10 mpg around town babying it and not towing.) Interesting it got 2 mpg better in the mountians.
Anyway parked the truck on Saturday running fine. Today I take off for work and its a real dog, no power at all. Scan gauge shows knock retard pulling timing like crazy, then it threw a PO327 code. So I ohm check them and sure enough one of them is dead.
My question is knock sensor failure common? Truck has 60k on it. I'm gonna replace both of them, should I stick with OEM or is there something better.
Thanks.

 

Are you sure it's dead? Cause I know bad gas can get you a knock sensor code, happened to me a few months ago. I cleared the code, put premium gas on the truck and the code hasn't come back.

 

I would suspect a bad O2 Sensor making you have bad mileage before a bad knock sensor but stranger things that happened.