The 2004 GMC Envoy XUV is available as a 4-door, 5-seat sport utility. Starting at $35,925, the 2004 GMC Envoy XUV SLT 4x2 is powered by a 4.2L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated 15-mpg in the city and 19-mpg on the highway. The top of the line 2004 GMC Envoy XUV SLE 4x4, priced at $33,575, is powered by a 4.2L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated 15-mpg in the city and 20-mpg on the highway.