Topic: 2002 pontiac aztek pcm replacement

**Common Issues and Troubleshooting:** 1. **No Air Flow:** If there is no air coming from the vents when the heater is on, the blower motor may be faulty. Check the fuse and relay associated with the blower motor for any issues. If those components are functioning properly, the blower motor itself may need to be replaced. 2. **Unusual Noises:** A squealing or grinding noise coming from the blower motor may indicate that the motor bearings are worn out and need to be replaced. Ignoring these no...