I have a 1999 chevy silverado 1500 4x4 5.3l engine. Just replaced the knock sensors. My question is where can i get a new wiring harness for the 2 sensors because the one i have has fallen apart after i removed it its corroded beyond help. Is this going to be a dealer item? ive tried local parts houses. any help would be greatly appreciated thanks

 

I don't think the wiring harness is available unless you're talking about splicing in a new electrical connector. Any GM parts counter should have the latter.

 

You might check with salvage yards.

 

ac delco part numbers PT308 and PT374