The 6 speed tranny really helps out in the newer GMs. I have the 3.42 in my Avy and it tows just fine. As with anything, you will always want more power.
I know the 3.42 is the way to go, since it's the highest they put in it.
Here are the 2 trucks
The GMC does look sweet.
15 qts of synthetic and filter only run you 100 bucks? I'm out almost 80 for 7 qts and a filter for my truck.
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I work at. Dealer and that was $150 for oil, oil filter, and both fuel filters
2005 mobius lsv 2900lbs ballast
Now back to the oil change cost why with no change for the past 5 years in engine do they require a different brand of oil?
There have been some changes in oil to a different viscocity in order to reduce friction/drag and make the engine more effecient. Mostly in an effort to increase fuel economy in the overall scheme.