1999 Chevrolet Silverado 1500 Pickup Owner's Manual - Page 316

yellowblue CAUTION: Operating the engine with the air cleaner/filter off can cause you or others to be burned. The air cleaner not only cleans the air, it stops flame if the engine backfires. If it isn't there, and the engine backfires, you could be burned. Don't drive with it off, and be careful working on the engine with the air cleaner/filter off. Passenger Compartment Air Filter (If Equipped) Your vehicle may be equipped with a passenger compartment air filter. The filter is located under the instrument panel below the glove compartment. To replace the passenger compartment air filter: 1. If your vehicle is equipped with a panel under the center of the instrument panel, remove the bolts on it to remove the panel. Because this operation can be a little difficult, you may choose to have it done at your dealer service department. 2. If your vehicle does not have a panel under the center of the instrument panel, or when the panel is removed, reach under the instrument panel towards the front of the vehicle and pull downward on the filter retaining bracket. NOTICE: If the air cleaner/filter is off, a backfire can cause a damaging engine fire. And, dirt can easily get into your engine, which will damage it. Always have the air cleaner/filter in place when you're driving. 6-18