2004 gulfstream crescendo
I also have a 2004 Creschendo . Assuming yours has a 330 cat you can update software to a 350. I have done a lot of little things to mine, but overall has been a great rig. Please check age of tires, belts / tensioner, fridge and make sure converter charger is operating properly, go up on roof and check front and rear caps and make sure all looks great. I will almost bet you will end up changing both headlight bezels if your going to do night driving this basis support inside breaks off. I run 95 psi on steer axle, and 105 on drive...Safe travels!!!
2004- GS Crescendo -8356
330 cat / 6 speed Allison
2009 - Z71 Silverado Ext cab - Beagle and Shitzu.