P0741 on Buick
Torque Converter Clutch Circuit Performance/Stuck Off
P0741 on Buick vehicles indicates torque converter clutch circuit performance/stuck off. Au7o has documented this code across 3 Buick models — most commonly on Enclave, Encore GX, Regal. This code means the torque converter clutch (TCC) is not working as expected and is effectively stuck off, so the converter clutch isn't locking up the way the computer commands it to. The TCC mechanically links the engine to the transmission at cruising speeds to reduce slippage and improve fuel economy, and the computer compares engine RPM to transmission/output speed to verify lockup. When the expected RPM drop from lockup doesn't happen, it sets this performance code. You may notice higher-than-normal RPM at highway speed, reduced fuel economy, and sometimes elevated transmission temperatures. Typical repair costs on Buick range from $150 to $5,500, depending on the specific model and root cause.
Common Causes of P0741
- •Low, dirty, or degraded transmission fluid
- •Faulty torque converter clutch (TCC) solenoid
- •Stuck or worn valve body / TCC control valve
- •Failed torque converter (internal clutch worn or slipping)
- •Internal transmission leaks reducing apply pressure
- •Damaged wiring or connector to the TCC solenoid
- •Faulty transmission control module (TCM/PCM)
P0741 on Buick by Model
Buick Enclave(1 issue)
- Torque Converter Clutch (TCC) Shudder2014-2020
Both the 6-speed (first-gen) and the 9-speed 9T65 (second-gen, 2018+) Enclaves are prone to a torque converter clutch shudder felt as a vibration or 'chuggle' during light acceleration, low-speed lockup, or while climbing grades. On 2018-2019 models GM traced many cases to incorrect transmission fluid installed at the factory, addressing it under TSB 18-NA-091 (and PIP5608C). Left unaddressed, the shudder can accelerate clutch and converter wear.
Buick Encore GX(1 issue)
- Encore GX CVT / 9-Speed Hesitation and Shudder2020-2024
The 2020+ Encore GX uses either the VT40 CVT (FWD 1.2L) or the GM 9T50 9-speed (AWD 1.3L). Both have reported issues: CVT hesitates from a stop, jerks on tip-in, and growls. 9-speed has been the subject of multiple TSBs covering harsh shifts, flares, and torque converter shudder.
Buick Regal(2 issues)
- 6T70/6T40 Automatic Transmission Shudder, Slipping & Hard Shifts2011-2017
Regals equipped with the GM 6T40/6T70 six-speed automatic can develop torque-converter shudder, slipping or flare on the 2-6 shift, and harsh/delayed shifts. The 6T40 issue is commonly debris blocking the 2-6 clutch regulator valve circuit; the 6T70 suffers wear in the accumulator/solenoid valve bores and torque-converter clutch shudder, sometimes worsened by overheated, degraded fluid.
- Regal Aisin AF40 6-Speed Harsh Shifts / Shudder2011-2017
The Aisin AF40 6-speed automatic in 2011-2017 Regal (and 2010-2017 LaCrosse 4-cyl, 2008-2017 Opel Insignia A) develops harsh 1-2 and 2-3 shifts, torque-converter shudder at light throttle, and delayed engagement, usually 80,000-150,000 miles. GM's "lifetime fill" claim is widely disputed by independent shops.
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View P0741 across all makes →Frequently Asked Questions
What does P0741 mean on Buick?▼
P0741 stands for "Torque Converter Clutch Circuit Performance/Stuck Off." This code means the torque converter clutch (TCC) is not working as expected and is effectively stuck off, so the converter clutch isn't locking up the way the computer commands it to. The TCC mechanically links the engine to the transmission at cruising speeds to reduce slippage and improve fuel economy, and the computer compares engine RPM to transmission/output speed to verify lockup. When the expected RPM drop from lockup doesn't happen, it sets this performance code. You may notice higher-than-normal RPM at highway speed, reduced fuel economy, and sometimes elevated transmission temperatures. On Buick specifically, this code is documented across 3 models.
What causes P0741 on Buick vehicles?▼
Common causes on Buick: Low, dirty, or degraded transmission fluid, Faulty torque converter clutch (TCC) solenoid, Stuck or worn valve body / TCC control valve, Failed torque converter (internal clutch worn or slipping), Internal transmission leaks reducing apply pressure. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0741 on a Buick?▼
Repair costs on Buick range from $150 to $5,500, depending on the specific model and root cause.
Which Buick models have P0741 documented?▼
Au7o has documented P0741 on 3 Buick models: Enclave, Encore GX, Regal.