2018–2024 Buick Enclave GM 9T65 Transmission Repair
The 2018–2024 Buick Enclave with the 3.6L V6 uses the 9T65 nine-speed, in FWD and AWD. The 2025 redesign is not covered here.
Transmission at a glance
Year-specific notes
- 2022 — 2022 refresh updated styling; the 3.6L V6 and 9T65 carried over.
How to confirm your transmission
- The RPO code sticker (glove box or spare-tire area) identifies the transmission; a VIN decode confirms the 9T65.
- Avenir and standard trims share the 3.6L V6 and 9T65.
- Scan-tool module data confirms the nine-speed unit and its software level.
Common GM 9T65 failure areas in the Enclave
A frequent 9T65 complaint on the Enclave; calibration and adaptive values are checked before hardware.
Can involve the shift system, internal mode switch or pressure control — each is tested.
Torque converter clutch behavior and fluid condition are the first checks.
Diagnostic considerations
- Scan all related modules and record the transmission software level.
- Review adaptive pressure values and live solenoid data.
- Road test including stop-and-go downshifts and converter lockup.
- On AWD models, inspect the twin-clutch rear drive system before condemning the transmission.
Repair or rebuild?
Many 9T65 complaints start with software or valve-body issues that can be corrected without a full rebuild. When clutches are damaged or there is debris in the fluid, a rebuild or replacement unit is the dependable fix. We show you the findings first.
Closely related vehicles
Request a quote for your Buick Enclave
Frequently asked questions
My Enclave shifts harshly when cold. Is that normal?
Some change in cold shift feel can be normal, but harsh or clunky shifts should be scanned. We check software level and adaptive data first.
Should I repair or rebuild the 9T65 in my Buick Enclave?
It depends on what failed. Solenoid, valve body and software faults can often be repaired; burnt clutches or metal in the pan usually mean a rebuild. We diagnose first and explain the options.
Do you give prices over the phone?
We don't quote before diagnosis because repair scope varies. Call 602-725-6800 or request a quote and we'll explain the next step. MBN Auto Diesel is at 6602 W Myrtle Ave, Glendale, AZ 85301.