* Engine Variation: The correct spark plug gap depends on the specific engine your Suburban has. There were multiple engine options for that year, including V8s and V6s.
* Spark Plug Type: Even within the same engine, different spark plug types (copper, platinum, iridium) will have different recommended gaps.
How to find the correct spark plug gap:
1. Consult your owner's manual: This is the best source of information. It will have a specific section on engine maintenance and should include the recommended spark plug gap for your particular vehicle.
2. Check the spark plug packaging: If you're replacing your spark plugs, the packaging should also include the recommended gap.
3. Visit a reputable mechanic: A mechanic can quickly identify the correct gap based on your vehicle's VIN or by inspecting the engine.
Important Note: Using the wrong spark plug gap can lead to engine performance issues, including misfires, reduced fuel economy, and even engine damage.