Bolt sizes can vary depending on the specific year and model of your vehicle.
Here's why:
* Different manufacturers: Even within the same engine family (like the 6.5L GM Diesel), different manufacturers (GM, Isuzu, etc.) may use different bolt sizes and configurations.
* Model variations: Different models within the same year (like a Chevy Suburban vs. a GMC Sierra) can have variations in their exhaust manifolds, leading to different bolt sizes.
* Production changes: GM may have made changes to the exhaust manifold design and bolt specifications over time, even within the same model year.
To find the correct bolt size, I recommend:
1. Consult your vehicle's owner's manual: It may list the bolt sizes for your specific model.
2. Check online parts catalogs: Websites like RockAuto or AutoZone allow you to search for parts by vehicle year, make, and model, and often provide information about bolt sizes.
3. Visit a local auto parts store: A knowledgeable parts professional can assist you in identifying the correct bolt size.
Please provide the year, make, and model of your vehicle so I can try to find more specific information.
