If I were you, Id buy a tq wrench.
If you get the vehicle serviced- when you pull out of the shop and get home... or around the corner
Loosen the bolts with a wrench.
Then take that Tq-wrench- and tighten them up in the star pattern to the spec in the manual.
2013 Equinox LT1 3.6L V6 FWD 88,000
2010 Traverse LT1 3.6L V6 FWD 153,000
2003 Trailblazer LS 4.2L I6 RWD 181,000