Under the dashboard , behind the glove box, passenger side.
The PCM is located under/behind the dash on passenger side of vehicle. It is very near the passenger side door.
On the dashboard
The PCM is located on the right side (inside) behind the instrument panel near the shroud
It is in the air intake box at the front of the car.....one of the easiest PCM's to get to, but no GM dealer seems to want to tell you that.
Powertrain Control Module (PCM)
The PCM (or ECM) is located on the interior of the car on the passenger side. To access the PCM/ECM remove the kick panel just beneath the glove box and it is right there. Disconnect the three electrical harnesses and and sucuritity clip and it's out.
PULL THE UNDER DASH COVER ON THE RIGHT SIDE DOWN AND THE ECM IS LOCATED TOWARDS THE FIREWALL IN A VERTICAL POSITION. YOU WILL SEE THE ECM WIRING CONNECTORS ( I THINK THERE ARE THREE WIRING CONNECTORS) GOING UP TO THE ECM.
On vehicles equipped with a camshaft position sensor, it is used to help the PCM determine the correct firing order.
PCM Location where is the ecm or brain in a 95 buick roadmaster
If you mean pcm- the computer.
its beyond of the air filter.
behind the gove box, use 7mm to remove. PCM clips into plastic bracket. Inside the car, under the dash, under the glove compartment. It's a silver box with 3 electrical connectors on it.