What is the 2007 chevy tahoe oil type?

There are three different engine configurations on the 2007 Chevrolet Tahoe. You may be equipped with either A4.8L V8, or one of two 5.3L V8 engines (one Flex Fuel, and one regular gasoline). Each uses the same SAE 5W-30 full synthetic motor oil, and each should be filled with 6.0 quarts. In the absence of SAE 5W-30, You may use SAE 5W-40 over the short term, but this is not recommended. The reason its recommended against is because a higher oil weight means a thicker oil, which will introduce friction into Your engine's operation. Over time, this will cause premature wear and tear, and eventually is known to cause early engine failure. Don't try to save a few quick bucks at Your oil change by going with cheaper oil; You'll be paying for it in the long term.