I rebuild about 5 vehicles a year and have been using advanced since they moved into the neighborhood. A 99 Blazer, 4.3 had the engine light come on and I got a code for a bad cam sensor, went to advanced paid $74.04 for the part ( got the aftermarket re-man from mexico), went home and put it in. Went to start the car and nothing, wouldn't start, no code, nada!. Put the old one back in and the truck starts right up, still get the code come up, now rememebr with the other one, nothing. Bad part, no problem, it happens on occasion... read full review »