Pontiac Automotive Repair Questions

PontiacĀ Cars and SUV's.

HereĀ is a list of auto repair questions and answers.

Click on your model to read the articles.

Articles being added all the time.

Subcategories

How Things Work

Power Steering- Electric- How Does It Work

The electric power steering (EPS) system reduces the amount of effort needed to steer the vehicle. The system uses the body control module (BCM), power steering control module (PSCM), torque sensor, discrete battery voltage supply circuit, EPS motor, serial data bus, and the instrument panel cluster (IPC) message center to perform the system functions.

Read more...

Common Engine Codes

EGR Codes P0400 - P0405

P0400-P0405
The powertrain control module (PCM) tests the exhaust gas recirculation (EGR) system during deceleration by momentarily commanding the EGR valve to open while monitoring the manifold absolute pressure (MAP) sensor signal. When the EGR valve is opened, the PCM should see a proportional increase in MAP.

Read more...