I'd take it to an independent shop. At a dealer the alignments aren't anything special. It's a toe-n-go. They won't adjust your camber or caster. Mom and pop is the way to go and $180 isn't that bad. 150 is the regular

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Only diesels in this driveway.
2005 E320 CDI 243k Black/Black
2008 Chevy 3500HD Duramax 340k
2004 Chevy 2500HD Duramax 220k