[crsgmc]

This may not be helpful. I replaced the engine on a 1996 K1500 with a factory crate engine. When replacing the engine, I replaced a lot of parts including cap, rotor, and wires. A couple years later I was on the on ramp accelerating on to I80. The truck totally died and would not restart. I had it towed home and began working on the problem. I had 16,000 miles on the cap and rotor........so I was sure it wasn't that. I did a post with pictures on this site years ago. The cap and rotor looked fine. I tested the continuity on the cap and it was also fine. I checked for spark on all cylinders and had zero spark. Bottom line I replaced the cap and rotor and the truck fired up and ran perfect. It was not a cheap cap, and had bronze contacts. You have spark, but is a full spark or weak. I have a hard telling the difference.