The 2006 GMC Yukon-XL runs on flex-fuel (unleaded/E85).
The 2006 GMC Savana runs on regular unleaded.
The 2006 GMC Canyon runs on regular unleaded.
The 2006 GMC Yukon runs on regular unleaded.
The 2006 GMC Sierra-1500 runs on regular unleaded.
The 2006 GMC Sierra-2500HD runs on regular unleaded.
The 2006 GMC Savana-Cargo runs on regular unleaded.
yes it is 6X5.5
The 2006 GMC Savana has a 4-speed automatic.
The 2006 GMC Canyon has a 5-speed manual.
The 2006 GMC Yukon has a 4-speed automatic.
The 2014 GMC Savana runs on flex-fuel (FFV).
The 2010 GMC Savana runs on flex-fuel (FFV).