6-Speed Automatic and 4WD. GPS Nav! Crew Cab! This 2013 Avalanche 1500 is for Chevrolet lovers looking far and wide for the perfect do-it-all truck. Don't get stuck in the mudholes of life. 4WD power delivery means you get traction whenever you need it. It is nicely equipped with features such as 6-Speed Automatic and 4WD. Sierra Blanca Motors has succeeded for the past 47 years because we have consistently provided SUPERIOR Sales and Service in the Ruidoso area & throughout Southeast New Mexico and West Texas!.