Expert Cadillac CTS transmission service in Chicago. Free computer diagnostic, lifetime warranty on rebuilds, all years.
2008β2014: 6L50 6-speed automatic (3.0L/3.6L V6) or 6L80 (3.6L AWD) 2014β2019: 8L45 8-speed automatic (2.0T or 3.6L) or ZF 8HP70 (CTS-V, 6.2L) 2019+ (CT5 successor): see CT5
6L50/6L80: SRV sleeve repair. 8L45: pump replacement + rebuild. ZF 8HP70: valve body or rebuild. CTS-V applications need more aggressive fluid service intervals due to performance use.
6L50/6L80: Dexron VI 8L45: Dexron HP ZF 8HP: ZF Lifeguard 8
2β4 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."
On 2008β2014 CTS with 6L50/6L80, SRV bore wear. On 2014+ with 8L45, pump wear or TCC. Diagnostic first.
More aggressive fluid changes β every 20k miles on an 8L45 CTS-V or ZF 8HP in a CTS-V. Don't skip.
Yes β the 8L45 and ZF 8HP70 in CTS-V are regular rebuilds for us.
2β4 days depending on which unit.
For a clean CTS, yes. CTS-V especially holds value β the rebuild is a fraction of the car's worth.
Same-day appointments available. Honest estimates, no surprises. We've been doing this since 1987.