alright heres my question. I have a 99 4.3 blazer. i looked on HPs site and noticed they have licenses for this car. i also pulled up one of their bin tunes and looked over it. its very similar to what our trucks run. now i noticed they have the same feature as the trucks do. they have Efan control. now i know how to program them but does anyone know what Pin in the PCM would be the one i need to use for the fans? i wonder if the same pin for the silverados would be similar to the one on the s10s.

any insight would be apprecaited.....

 

I believe it's the black connector, pin 9.

 

nice will have to check that out, thanks