Where is the fuel filter located on a 1997 GMC Sierra 3500?

The fuel filter location on a 1997 GMC Sierra 3500 depends on the engine. There's no single location. You'll need to check your specific engine type (e.g., 6.5L Turbo Diesel, 7.4L V8, etc.) to pinpoint it.

To find it, I recommend:

* Checking your owner's manual: This is the best resource. It will have a diagram showing the location.

* Looking online: Search for "[Your Engine Type] 1997 GMC Sierra 3500 Fuel Filter Location" on sites like YouTube (often has visual guides) or repair manuals websites.

* Looking under the hood: While this might seem obvious, fuel filters are often tucked away. Look closely along the frame rail near the fuel tank.

Without knowing your engine, I can't give a precise location. Safety first: Before working near fuel lines, make sure the engine is off and you've allowed sufficient time for fuel pressure to dissipate.