Every truck in my fleet deos this. Good, bad, new, it deosn't matter. The GM's are the worst of the bunch. (piss poor shocks, worst slow speed ackerman)
-rotate every 5,000 with any aggressive tire or when towing
-rotate every 10,000 for normal tires and unloaded use.
-learn to dually cross rotate without changing the tres rotation. You'll have to do this yourself. Tire shops are too stupid to figure it out. Draw a chalk rotation mark onthe sidewall.
Left Outside Rear to Right Inside Rear
ROR to LIR
LF to ROR
RF to LOR
LIR to LF
RIR to RF
I think I got that right? If you make yourself a diagram, use triangles for tires to show which way the wheel faces.
You'll need all 4 tires off to rotate that way, and the truck on 4 bottle jacks. Flipping the tires increases blow outs under load in my experience, that's why I rotate duallys this way.
-Oh yeah, slow down in the turns.
-and avoid manuevering tightly in parking lots, trucks have crappy akerman at low speeds and scrub the heck out of the front tires, my trucks actaully leave black marks from turning on fresh concrete. Just park in the back.
-check balljoints
-Bilstein shocks
-stop letting women drive your truck! LOLz.
That's all I got for tire cupping.