i have two sensors that i have no idea what they are. one on each cylinder head. i know they go there cuz thats the way it was before i took the engine apart. i have the haynes manual and the tip swappers guide and neither say anything about any sensors in the cylinder heads. help!

 

One is the coolant temp sensor for the guage and the other is the backup fan switch.

 

since your a gmtech you know your sh*t

 

Alternator fluid, huh? I think I like that better than muffler bearings.