Well yesterday I was towing dads 2000 pound tool box in my 1997 C1500 5.7 and I was trying to keep it from shifting or unlocking the torque converter to keep tranny temp down so I would lug it up hills at 60 mph and the engine would spark rattle very noticeably and on the way back it would do the same thing not as loud as when i was towing but still noticeable when i hit the gas to maintain speed going up a hill also it does it at WOT because I was trying to clear it out which did not help
I also replaced the Plug's ,Wires,Cap, and rotor
Thanks in advanced for any help
I also replaced the Plug's ,Wires,Cap, and rotor
Thanks in advanced for any help