Regarding difficulty of replacement: It's generally considered a moderately easy repair for someone with basic mechanical skills. Access can be somewhat tight, requiring some maneuvering, but it usually doesn't involve complex engine disassembly. The main challenges might be:
* Access: Reaching the valve might require removing some heat shields, air intake components, or other parts to get a good angle.
* Bolts: The bolts holding the EGR valve can be stubborn due to heat and carbon buildup. Penetrating oil and patience are often needed.
* Vacuum Line: Carefully disconnecting and reconnecting the vacuum line is important to avoid leaks.
If you're not comfortable working on your car, it's best to have a qualified mechanic replace it. However, with the right tools and some patience, a DIY replacement is often achievable. Again, a repair manual specific to your Venture's year and engine is highly recommended. It will provide diagrams and detailed instructions, making the process much smoother.