You really don't need a 3.73. I've got the HD tow package and wish mine had the 3.55 because at 80 mph you are turning over 2000 rpm which kills fuel mileage.
I just went throught this too. After having my Yukon for 9 yrs. I didn't care if the Expedition had nails for seats there was no way I was buying another GM product. The Yukon was like a kid, everytime I took it to town I had to buy it something. I went through 3 factory DVD players just...
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