Always check your owner's manual for the precise specification recommended by Chevrolet for your particular vehicle. If you don't have the manual, you can try searching online for a digital copy specific to your year and model. The specification might also be found stamped on a sticker under the hood or on the air cleaner.
If you can't find the specific recommendation, erring on the slightly smaller side of the range (closer to 0.035 inches) is usually safer than too large a gap. A too-large gap can lead to misfires, while a slightly small gap is less problematic. However, always strive to find the factory specification for optimal performance.
