Transmission History by Year - Cadillac XT5
2017 - 2020: 8L45 8-speed automatic (3.6L V6) 2021+: 9T50 9-speed automatic (2.0T) or 8L45 (3.6L)
Expert Cadillac XT5 transmission service in Chicago. Free computer diagnostic, 2-year / 24,000-mile warranty on rebuilds, all years.
We will contact you as soon as a service member is available by call, text, or email.
2017 - 2020: 8L45 8-speed automatic (3.6L V6) 2021+: 9T50 9-speed automatic (2.0T) or 8L45 (3.6L)
8L45 TCC shudder: Dexron HP exchange + converter if needed. 9T50: PCM update first. AWD coupling: separate service.
Dexron HP (8L45) or Dexron VI (9T50)
Verify exact spec on the dipstick label or owner's manual before fill. Recommended change interval: every 60,000 miles for normal driving, 30,000 miles under severe service (towing, stop-and-go, hot climates). Pan service typically takes 6 - 8 quarts; a full fluid exchange takes 10 - 14 quarts depending on cooler-line capacity.
2 - 4 days.
Fluid service and inspection complete the same day. Solenoid or sensor replacement: 1 day. Torque converter or seal repair: 2 - 3 days. Full rebuild with road test: 4 - 6 days. Time estimates assume parts in stock - call (312) 626-8759 to verify availability for your specific vehicle.
Every vehicle needs diagnosis before anyone can promise a repair path. These are the situations we help organize before you decide what to do next.
Tell us when it happens, whether reverse still works, and if warning lights are on. A scan and fluid check come before guessing at a rebuild.
Fluid condition, leak location, and driving distance matter. If the vehicle is slipping badly or overheating, towing may be the safer next step.
A failed solenoid, valve body, converter, or internal clutch problem can lead to very different repair paths. The goal is a clear diagnosis and written estimate.
On the 3.6L XT5, likely the 8L45 TCC shudder. Dexron HP exchange is the first step.
The AWD coupling is a wear item on high-mileage XT5s. We service it separately from the main transmission.
2 - 3 days.
Dexron HP for the 8L45 (3.6L) or Dexron VI for the 9T50 (2.0T). We confirm for your specific year.
For a clean XT5 body, yes.
Same-day appointments available. Honest estimates, no surprises. We've been doing this since 1987.
