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We cover three LaCrosse generations. The first (2005 to 2009) uses 3.8- and 3.6-liter V6 engines. The second (2010 to 2016) offers a 2.4-liter with eAssist mild hybrid and a 3.6 V6. The third (2017 to 2019) uses a 3.6 V6 with an 8- or 9-speed automatic.


Your 2010 Buick LaCrosse is from the second-generation LaCrosse, which covers model years 2010–2016. It is the first model year of this generation: the platform, wiring and many procedures changed compared with the previous model, so a manual for an earlier year will not match it.
Check the model year on your VIN: on a 2010 vehicle the 10th character of the 17-digit VIN is “A”. Vehicles built for North America always carry the model year in that position; on some European or Australian vehicles it may be left unused, so in that case go by the registration papers or the build plate.
At about 16 years old, a 2010 vehicle is in the age range where wiring, rubber hoses, seals and corrosion repairs take most of the work, and where original factory information is hardest to find.
Same generation: 2011 Buick LaCrosse, 2012 Buick LaCrosse, 2013 Buick LaCrosse, 2014 Buick LaCrosse, 2015 Buick LaCrosse, 2016 Buick LaCrosse.
All Buick LaCrosse model years: 2005 · 2006 · 2007 · 2008 · 2009 · 2010 · 2011 · 2012 · 2013 · 2014 · 2015 · 2016 · 2017 · 2018 · 2019
Engine
2.2L
2.4L
2.8L
3.0L
3.2L
3.6L
Transmission
Automatic Transmission - 6T30/6T40/6T45
Automatic Transmission - 6T70/6T75
