It could be the spark plug wires that's what was wrong with mine.
what are you takling about? no such thing!
No
Power brakes use engine vacuum to get their power. If the engine is out of tune, the loss of vacuum will cause it to run rough. Try changing the spark plugs.
The belt drives the power steering, water pump, and other things.
On the back side of the engine
The cause for an error code p1361 on a Buick Park Avenue is ignition control circuit low voltage. The power or wiring leading into the circuit is damaged or incorrect.
remove the power steering pump
Maybe on the passenger side near the firewall
power antenna, you can buy them from gm dealers for about $120
The ECM powers the fuel pump relay
In the power steering pump. It is on the back of the engine on the right side. You will need a long funnal.
Not knowing what you've done so far, have you checked your fuses yet ?