i have an 05 silverado 1500 crew cab short box 5.3L LS The sticker on the inside of the drivers door is so faded you can't read it. How can I tell what my gear ratio is? Is it stamped on the axle maybe?? I call the dealership with the vin # but they are taking their sweet time getting back to me.. According to the manual it is either 3.42 or 4.10 I'm thinking its the 3.42 cuz I get around 19-20 mpg on the highway averaging 70 mph or so.... Any suggestions????

---------- Post added at 09:27 PM ---------- Previous post was at 09:25 PM ----------

so it's either 7400lbs or 8400 lbs max