One way I've heard the role of product manager described as is a "shit umbrella".
- Good managers are shit umbrellas
- Bad managers are shit funnels
What you need are those clear plastic umbrellas, no rain, but all the sun.
Transparency.
As a former product manager, I think of it as being at the bottom of a canyon and shit rolling in from both edges of the canyon (business and technical). It's a hard job to do well and keep everyone happy.