1996 Chevrolet Tahoe Owner's Manual - Page 271

A ,CAUTION: Operating theengine with the air cleaner off can cause you or others be burned. The air to cleaner not only cleans the air, it stops flame engine if the backfires. If it isn't there, and theengine backfires, you could be burned. Don't drive with it off, and be careful workingon the engine with the aircleaner off. I Automatic Transmission Fluid When to Check and Change A good time to check your automatic transmission fluid level is when the engine oil is changed. Change both the fluid and filter every 50,000 miles (83 000 Ism) if the vehicle is mainly driven under one or,more of these conditions: 0 In heavy city traffic where the outside temperature regularly reaches 90"F (32 O C) or higher. In hilly or mountainous terrain. When doing frequent trailer towing. Uses such as found in taxi, police or delivery service. 0 0 NOTICE: If the aircleaner is off,a backfire can cause a damaging engine fire. And, dirt can easily get into yourengine, which willdamage it. Always have theair cleaner inplace when you're driving. 0 If you do not use your vehicle under any of these conditions, the fluid and filter do not require changing. See "ScheduledMaintenance Services" in the Index. 6-18