Expert Buick LaCrosse transmission service in Chicago. Free computer diagnostic, lifetime warranty on rebuilds, all years.
2010β2016: 6T70 6-speed automatic (2.4L or 3.6L V6) 2017β2019: 8-speed automatic (2.5L or 3.6L)
6T70: SRV sleeve repair. TCC shudder: Dexron VI fluid exchange + converter inspection. 8-speed: valve body service.
Dexron VI
1β3 days.
"Honest diagnosis, fair price, and the repair was done right. Chicago Transmission has been my go-to for years. Wouldn't trust anyone else with my car."
"The free diagnostic alone was worth the trip. They found the problem fast, gave me a written estimate, and completed the work on time. Exceptional service."
"Family owned and it shows. They treated my car like it was their own. The lifetime warranty on my rebuild gives me total peace of mind. Highly recommend."
Likely TCC shudder β very common on the 6T70 LaCrosse. Dexron VI fluid exchange is first; converter replacement if it persists.
Same 6T-family β the 6T70 in LaCrosse is larger than the 6T40 in Equinox but uses the same SRV repair approach.
1β3 days.
Extended fluid change intervals and high mileage. The bore wears and line pressure drops.
For a well-maintained LaCrosse body, yes.
Same-day appointments available. Honest estimates, no surprises. We've been doing this since 1987.