Time for a tune-up! What would you do?

[ExtraSlow]

Howdy all, I've got a 2010 2500 with the 6.0L gas engine. Currently has around 225,000kms on it, (140,000 miles)  it's in good shape and all I use it for is pulling my travel trailer in the summer.  A couple of times last year it threw a code, which never resulted in any kind of driveability issue or noticeable loss of power.  I stupidly didn't write down what code it was, and I'm thinking it needs some love before the summer towing season is here.  

 

Spark plugs and an oil change are obvious places to start.  I'm very comfortable with brakes, so I'll have a good look at those as well.  I had a buddy say that replacing the oxygen sensors was a good preventative thing to do.  What do you think?  If this was your truck, what would you do to it?    Belts?  

 

Would love to hear some opinions.  

[txab]

Belts, hoses, coolant, thermostat, power steering fluid exchange, brake fluid flush/change, diff lube change, plugs, wires

 

 

 

Most important, change blinker fluid and check muffler bearings.

[davester]

don't forget to change the transmission and transfer case fluids if they haven't been done in awhile.