Can someone tell me what the tach output wire for an 04' silverado SS is?

I have been searching for over an hour and all I get are posts about F-bodies and window tinting and other such nonsense

thanks for the help!

 

Anyone?

 

Pretty sure it is pin#10 on the Red Plug. I dont want to go out and take the PCM out right now, but if the wire is white.....that is it.

 

Oh yeah....be sure to test it first....

 

I was figuring it might be ten if it was white. Thanks for the information.

 

did it work for you?

 

i dont know how much help this will be but i hooked my autometer sportcomp right to the green wire going into my cluster. worked perfectly