Which transmission is in your Buick

Automatic transmissions fitted to 26 models of Buick: code, transmission type, engines and production years. If you are not sure which one you have, we will check it by the VIN.

Series

Type

26 of 26 models

2010-2015 Buick Alpheon 2 transmissions

Transmissions in the Buick Alpheon
Years	Code	Type	Gears	Engines
2010-2015	6T45	automatic	6	2.0-3.0L
2012-2015	6T40 GM Hydra-Matic 6T40	automatic	6	2.4L

2000-2004 Buick Century 1 transmission

Transmissions in the Buick Century
Years	Code	Type	Gears	Engines
2000-2004	4T65E	automatic	4	2.5-3.1L

2007-2022 Buick Enclave 3 transmissions

Transmissions in the Buick Enclave
Years	Code	Type	Gears	Engines
2007-2017	HMD X22F	automatic	6	3.6L
2017-2022	9T65	automatic	9	3.6L
2019-2022	9T50	automatic	9	2.0L

2012-2022 Buick Encore 2 transmissions

Transmissions in the Buick Encore
Years	Code	Type	Gears	Engines
2012-2022	6T40 GM Hydra-Matic 6T40	automatic	6	1.0-1.4L
2019-2022	X69F(CVT250)	continuously variable (CVT)	–	1.4L

2019-2022 Buick Encore GX 4 transmissions

Transmissions in the Buick Encore GX
Years	Code	Type	Gears	Engines
2019-2022	9T45	automatic	9	1.4L
2019-2022	9T50	automatic	9	1.4L
2019-2022	X69F	continuously variable (CVT)	–	1.2-1.4L
2019-2022	X69F(CVT250)	continuously variable (CVT)	–	1.4L

2014-2022 Buick Envision 4 transmissions

Transmissions in the Buick Envision
Years	Code	Type	Gears	Engines
2014-2017	6T50	automatic	6	2.0L
2015-2021	X44F (SHDT250)	dual-clutch	7	1.5L
2017-2021	9T50	automatic	9	2.0L
2020-2022	9T60	automatic	9	2.0L

2020-2022 Buick Envision S 1 transmission

Transmissions in the Buick Envision S
Years	Code	Type	Gears	Engines
2020-2022	9T50	automatic	9	2.0L

2003-2022 Buick Excelle 4 transmissions

Transmissions in the Buick Excelle
Years	Code	Type	Gears	Engines
2003-2009	4HP 16	automatic	4	1.8L
2003-2012	81-40LS	automatic	4	1.6L
2013-2016	6T30	automatic	6	1.5L
2018-2022	X69F(CVT250)	continuously variable (CVT)	–	1.3L

2010-2022 Buick Excelle GT 5 transmissions

Transmissions in the Buick Excelle GT
Years	Code	Type	Gears	Engines
2010-2022	6T30	automatic	6	1.3-1.6L
2010-2015	6T40 GM Hydra-Matic 6T40	automatic	6	1.8L
2010-2015	6T45	automatic	6	1.6L
2015-2017	X44F (SHDT250)	dual-clutch	7	1.4L
2017-2020	6DCT150	dual-clutch	6	1.0L

2017-2022 Buick Excelle GX 2 transmissions

Transmissions in the Buick Excelle GX
Years	Code	Type	Gears	Engines
2017-2022	6DCT150	dual-clutch	6	1.0L
2017-2021	6T30	automatic	6	1.3L

2004-2009 Buick Excelle HRV 1 transmission

Transmissions in the Buick Excelle HRV
Years	Code	Type	Gears	Engines
2004-2009	81-40LS	automatic	4	1.6L

2010-2015 Buick Excelle XT 3 transmissions

Transmissions in the Buick Excelle XT
Years	Code	Type	Gears	Engines
2010-2015	6T30	automatic	6	1.6L
2010-2011	6T40 GM Hydra-Matic 6T40	automatic	6	1.8L
2010-2015	6T45	automatic	6	1.6L

2017-2022 Buick GL6 1 transmission

Transmissions in the Buick GL6
Years	Code	Type	Gears	Engines
2017-2022	6T50	automatic	6	1.3L

2000-2022 Buick GL8 5 transmissions

Transmissions in the Buick GL8
Years	Code	Type	Gears	Engines
2000-2010	4T65E	automatic	4	2.5-3.0L
2010-2020	6T45	automatic	6	2.4-2.5L
2011-2020	6T50	automatic	6	2.0-3.0L
2020-2022	9T50	automatic	9	2.0L
2020-2022	9T60	automatic	9	2.0L

2004-2022 Buick LaCrosse 8 transmissions

Transmissions in the Buick LaCrosse
Years	Code	Type	Gears	Engines
2004-2009	4T65E	automatic	4	2.4-5.3L
2006-2016	6T45	automatic	6	2.4-3.0L
2008-2019	6T40 GM Hydra-Matic 6T40	automatic	6	2.4-2.5L
2009-2016	HMD X22F	automatic	6	3.0-3.6L
2010-2019	6T50	automatic	6	1.4-3.0L
2016-2017	AWF8F45(TG-81LS)	automatic	8	3.6L
2016-2019	X44F (SHDT250)	dual-clutch	7	1.5L
2017-2022	9T60	automatic	9	2.0-3.6L

2000-2005 Buick LeSabre 1 transmission

Transmissions in the Buick LeSabre
Years	Code	Type	Gears	Engines
2000-2005	4T65E	automatic	4	3.8L

2005-2011 Buick Lucerne 2 transmissions

Transmissions in the Buick Lucerne
Years	Code	Type	Gears	Engines
2005-2011	4T65E	automatic	4	3.8-3.9L
2005-2011	4T80-E	automatic	4	4.6L

2000-2012 Buick Park Avenue 3 transmissions

Transmissions in the Buick Park Avenue
Years	Code	Type	Gears	Engines
2000-2004	4T65E	automatic	4	3.8L
2007-2009	5L40E	automatic	5	2.8-3.6L
2009-2012	6L50	automatic	6	3.0L

2003-2007 Buick Rainier 1 transmission

Transmissions in the Buick Rainier
Years	Code	Type	Gears	Engines
2003-2007	4L60E GM Hydra-Matic 4L60-E	automatic	4	4.2-5.3L

2000-2022 Buick Regal 8 transmissions

Transmissions in the Buick Regal
Years	Code	Type	Gears	Engines
2000-2008	4T65E	automatic	4	2.5-3.8L
2008-2017	6T40 GM Hydra-Matic 6T40	automatic	6	2.0-2.4L
2009-2011	TF-80SC Aisin TF-80SC	automatic	6	2.0L
2011-2017	6T50	automatic	6	2.0L
2011-2012	TF-81SC	automatic	6	2.0L
2013-2017	6T45	automatic	6	1.6L
2017-2022	9T45	automatic	9	1.4-1.5L
2017-2022	9T60	automatic	9	2.0L

2001-2006 Buick Rendezvous 1 transmission

Transmissions in the Buick Rendezvous
Years	Code	Type	Gears	Engines
2001-2006	4T65E	automatic	4	3.4-3.6L

2005-2006 Buick Royaum 1 transmission

Transmissions in the Buick Royaum
Years	Code	Type	Gears	Engines
2005-2006	5L40E	automatic	5	2.8-3.6L

2003-2005 Buick Sail 1 transmission

Transmissions in the Buick Sail
Years	Code	Type	Gears	Engines
2003-2005	60-41SN	automatic	4	1.6L

2004-2007 Buick Terraza 1 transmission

Transmissions in the Buick Terraza
Years	Code	Type	Gears	Engines
2004-2007	4T65E	automatic	4	3.5-3.9L

2011-2022 Buick Verano 6 transmissions

Transmissions in the Buick Verano
Years	Code	Type	Gears	Engines
2011-2016	6T40 GM Hydra-Matic 6T40	automatic	6	2.4L
2012-2022	6T50	automatic	6	2.0L
2015-2022	6T30	automatic	6	1.0-1.5L
2015-2022	6T45	automatic	6	2.5L
2015-2019	X44F (SHDT250)	dual-clutch	7	1.5L
2019-2022	X69F(CVT250)	continuously variable (CVT)	–	1.4L

2015-2019 Buick Verano GS 2 transmissions

Transmissions in the Buick Verano GS
Years	Code	Type	Gears	Engines
2015-2019	6T30	automatic	6	1.5L
2015-2019	X44F (SHDT250)	dual-clutch	7	1.5L

Not sure which one your car has?

Provide the VIN when booking an appointment, and before you arrive we will check which transmission you have in your car and if we repair it.

Ask for a quote or +48 609 100 340

Codes

The transmissions we see most often in Buick vehicles

Below are the codes from this list, ordered from the most common. These are the ones to look for in the registration document or on the transmission plate when you order parts.

4T65E 9 models
6T45 7 models
6T40 7 models
6T50 6 models
6T30 6 models
9T50 5 models
X44F (SHDT250) 5 models
X69F(CVT250) 4 models
9T60 4 models
HMD X22F 2 models
9T45 2 models
81-40LS 2 models
6DCT150 2 models
5L40E 2 models
9T65 1 model
X69F 1 model
4HP 16 1 model
AWF8F45(TG-81LS) 1 model
4T80-E 1 model
6L50 1 model
4L60E 1 model
TF-80SC 1 model
TF-81SC 1 model
60-41SN 1 model

Trade names

What the transmission names mean in Buick

The list above shows the code a mechanic reads: the code from the plate, the parts catalogue number or the design symbol. In a search engine people type something else: the transmission model name or the showroom name. These describe the same transmission. Below are the ones that appear in this list, together with the clutch type, because that decides how the repair runs and what it costs.

Transmission model	Trade name	Gears	Clutch	Torque	Layout
4L60E	Hydra-Matic	4	torque converter		longitudinal
6T40	Hydra-Matic	6	torque converter	240-280 Nm	transverse
TF-80SC	AM6, AF40-6, Geartronic	6	torque converter		transverse

Maximum torque is the highest torque the transmission can safely handle without risk of damage. It is the factory figure for the transmission model, not for one particular car. Some codes from the plate have no publicly confirmed model assignment, and those stay in the table without a second name. The VIN number is what finally decides, which we check before you arrive.

Gearbox trouble in your Buick? Write to us

Describe the symptoms: at what speed they appear, with the engine cold or warm, whether there is a jolt when shifting, a delay after engaging a gear, or a message on the dashboard. Add the model year, the engine and the VIN. We will write back with what that suggests and which check makes sense. Whether we take the repair is decided by the diagnostic check.

Describe the problem