However, generally speaking, 1995 Tahoes likely used conventional oil. The *weight* of the oil (like 5W-30 or 10W-30) will be specified in your owner's manual. Check that manual for the exact recommendation. Using the incorrect weight can damage your engine.
Do not rely solely on this information. Always consult your owner's manual for the correct oil type and weight for your specific 1995 Chevy Tahoe.