chevy anti knock sensor

[firstdog]

I have a 2003 1500 four wheel drive with a 5.3 engine Ext. cab with a T in ser. # i had a light come on service engine and the code read low voltage on # 2 anti-knock sensor, I installed both anti knock sensor and new wiring harness and after I drive about 30 to forty miles it come s back on, where should I look next.......Thanks.....Ottis

 

[Chuzz]

Hey Otis, disconnect your battery ground cable for about five minutes and see if that clears your code. Sometimes it works and sometimes it takes several "drive cycles" for some vehicles to clear a code after the problem has been fixed.

 

[zora]

If that doesnt resolve the issue, please post what code you had

 

[firstdog]

I have a code re-setter but if I reset it and light goes out in about 40 miles it comes back on. it is out right now just re-set it when I drive it today and it comes back on will ck code and post code number...Thanks....Ottis.....also have ck for loose connection can't find any my reader says low voltage on number 2, knock sensor but will post code number when I drive it today....