Getting to it is a major undertaking, not a simple job for a novice. It involves:
1. Removing the dashboard: This is the most labor-intensive part. You'll need to disconnect various components, including electrical connectors, HVAC controls, and potentially the steering column (partially or fully depending on the year). There are numerous screws, clips, and fasteners holding the dash in place.
2. Accessing the heater core: Once the dashboard is partially or fully removed, you'll be able to see the heater core housing. This typically involves removing additional components like the glove box and potentially parts of the HVAC system.
3. Replacing the heater core: This involves disconnecting the heater core hoses, carefully removing the core from its housing, and installing the new core. Be prepared for coolant spillage.
In short, this is not a DIY job unless you have significant mechanical experience and the right tools. It's recommended to take your vehicle to a qualified mechanic or auto repair shop to have the heater core replaced. Attempting this yourself without the proper knowledge and tools could lead to further damage to your vehicle.
A repair manual specific to your year and model Chevy Venture will be invaluable if you're determined to do it yourself. These manuals provide detailed instructions and diagrams. However, even with a manual, it's a complex and time-consuming process.
