2004 GMC Envoy Owner's Manual - Page 418

L6 Engine Application Differential Fluid Rear Front Fuel Tank Envoy Envoy XL 22.0 gallons 25.3 gallons 83.3 L 95.8 L 3.6 pints 1.7 pints 1.7 L 0.8 L English Metric English V8 Engine Metric 4.3 pints 1.7 pints 2.0 L 0.8 L 22.0 gallons 25.3 gallons 83.3 L 95.8 L All capacities are approximate. When adding, be sure to fill to the appropriate level, as recommended in this manual. Recheck the fluid level after filling. 5-110