Fibonacci, that diagram came out of a 1993 Pontiac Transport Service Manual; fwd 3.1L V-6. I’d just randomly grabbed it off the shelf so as to give Ferris some direction in wiring his fan relay. Yes, I agree w you that having both a pusher and a puller fan, stock, seems unusual. I’m not inclined to debate GM’s logic….not my circus, not my monkey. (….hard to believe that was 30 years ago, I’m suddenly feeling old!)
