2016 Buick Lacrosse Drivetrain Parts

Engine:

Showing parts for every engine. Select an engine to see only what fits.

The 2016 Buick Lacrosse has 92 drivetrain parts with verified fitment on this page — 40 part types and 14 brands, covering both the 2.4L L4 and the 3.6L V6. Each part includes a manufacturer part number and application notes.

The drivetrain system on the 2016 Buick Lacrosse moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. The largest groups are CV Axle (17 parts), Differential Washer (6 parts) and Differential Carrier Bearing / Race (5 parts). The other 37 part types cover the remaining 64 parts.

AWD Coupling Fluid

Brand Part Number Markets Notes Buy
ACDELCO Fits: 3.6L V6 104070
🇺🇸 US
Haldex Statoil301 Transmission Fluid
Fitment notes — ACDELCO 104070
Haldex Statoil301 Transmission Fluid33.7 OZ
AWD
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This table covers the AWD Coupling fluids. Typical signs include discolored fluid, a burnt smell, or a level that keeps dropping. Use only the specification in the notes — the tables group grades because they are not interchangeable.

AWD Coupling Oil Filter

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 20986573
🇺🇸 US 🇨🇦 CA
Includes Filter and Gasket
Fitment notes — GM GENUINE 20986573
Includes Filter and Gasket
AWD
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VAICO Fits: 3.6L V6 V401565
🇺🇸 US 🇨🇦 CA
AWD
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This table covers the AWD Coupling Oil filters. Typical signs include restricted flow — long cranking, weak airflow, or dirty fluid after a short interval. Seat the new filter so it cannot bypass, and use the grade the notes call for.

AWD Coupling Oil Pump

Brand Part Number Markets Notes Buy
DORMAN Fits: 3.6L V6 699000
🇺🇸 US 🇨🇦 CA
AWD
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GM GENUINE Fits: 3.6L V6 22765779
🇺🇸 US 🇨🇦 CA
AWD
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LARES Fits: 3.6L V6 30375
🇺🇸 US 🇨🇦 CA
AWD
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This table covers the AWD Coupling Oil pumps. Typical signs include noise from the pump, no pressure, or fluid that never arrives at the outlet. Prime or fill the pump as the notes require. A dry start is a common way to kill a new unit.

Axle Intermediate Shaft Seal

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 22759189
🇺🇸 US 🇨🇦 CA
Front
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This table covers the seals at the Axle Intermediate Shaft. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.

Axle Shaft Seal

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 291332
🇺🇸 US 🇨🇦 CA
RearAWD
Fitment notes — GM GENUINE 291332
RearAWDYELLOW
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TIMKEN Fits: 3.6L V6 SL260439
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Rear
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This table covers the seals where an axle shaft exits the housing. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.

CV Axle

Economy

Brand Part Number Markets Notes Buy
AUTO EXTRA Fits: 3.6L V6 GC88989
🇺🇸 US 🇨🇦 CA
Rear RightPrimary Design
Fitment notes — AUTO EXTRA GC88989
Rear RightPrimary DesignOE # 228232994WD/AWD
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Standard Replacement

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 3.6L V6 84628595
🇺🇸 US 🇨🇦 CA
Front LeftTrans.Code 6T70
Fitment notes — GM GENUINE 84628595
Front LeftTrans.Code 6T706 Speed Automatic Trans.with RPO Code ACMRwith RPO Code AATY AA96
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GM GENUINE Popular Fits: 3.6L V6 84628596
🇺🇸 US 🇨🇦 CA
Front Rightwith RPO Code ACMS
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TOP NOTCH Popular Fits: 3.6L V6 TN20015
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Front Left
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TRAKMOTIVE Popular Fits: 3.6L V6 GM8275
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
AAR Joint Design
Fitment notes — TRAKMOTIVE GM8275
AAR Joint Design
Front Right
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CARDONE Fits: 3.6L V6 661643
🇺🇸 US 🇨🇦 CA
Rear LeftAWD
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CARDONE Fits: 3.6L V6 661644
🇺🇸 US 🇨🇦 CA
Rear RightAWD
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GSP Fits: 3.6L V6 NCV10101
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Rear LeftLeather or Premium
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GSP Fits: 3.6L V6 NCV10273
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Rear Right
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GSP Fits: 3.6L V6 NCV10049
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Front Right
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GSP Fits: 3.6L V6 NCV10046
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Front Left
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TOP NOTCH Fits: 3.6L V6 TN20020
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Rear LeftLeather or Premium
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TOP NOTCH Fits: 3.6L V6 TN20040
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Rear Right
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TRAKMOTIVE Fits: 3.6L V6 GM8308
🇺🇸 US 🇨🇦 CA
Rear RightAWD
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TRAKMOTIVE Fits: 3.6L V6 GM8303
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Front LeftOption MHH
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TRAKMOTIVE Fits: 3.6L V6 GM8276
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Front LeftOpt. M7U or M7W Trans.
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TRAKMOTIVE Fits: 3.6L V6 GM8307
🇺🇸 US 🇨🇦 CA
Rear LeftAWD
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This table covers the complete CV axle shafts from differential (or hub) to wheel. Typical signs include a click in tight turns, grease flung around the wheel well, or a vibration that builds with speed. A torn boot caught early is a boot kit; caught late it is the whole axle. Torque the axle nut to the method in the notes.

CV Axle Support Bearing Bracket

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 13368407
🇺🇸 US 🇨🇦 CA
FWDTrans. code 6T70
Fitment notes — GM GENUINE 13368407
FWDTrans. code 6T706 speed Automatic trans.
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This table covers the brackets that mount the CV Axle Support Bearing. Typical signs include a cracked mount, a rattle, or a bracket that no longer holds alignment. Confirm position in the notes. Many brackets look alike and bolt to different corners.

CV Intermediate Shaft

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 22901057
🇺🇸 US 🇨🇦 CA
FrontFWD
Fitment notes — GM GENUINE 22901057
FrontFWDTrans.Code 6T706 speed Automatic trans.Automatic Transmission Case Side3.39R(F07)
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This table covers the CV Intermediate shafts.

CV Joint

Brand Part Number Markets Notes Buy
ACDELCO Fits: 3.6L V6 39196365
🇺🇸 US
Front OuterWHEEL SIDE
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ACDELCO Fits: 3.6L V6 39207311
🇺🇸 US 🇨🇦 CA
GM Original Equipment
Fitment notes — ACDELCO 39207311
GM Original Equipment
Front Left InnerTrans. code 6T706 speed Automatic trans.
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ACDELCO Fits: 3.6L V6 39207312
🇺🇸 US 🇨🇦 CA
GM Original Equipment
Fitment notes — ACDELCO 39207312
GM Original Equipment
Front Right InnerTrans. code 6T706 speed Automatic trans.
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This table covers the constant-velocity joints at each end of a drive axle.

CV Joint Boot

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 20894127
🇺🇸 US 🇨🇦 CA
Rear InnerAWD
Fitment notes — GM GENUINE 20894127
Rear InnerAWDTrans. code 6T706 speed Automatic trans.
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MEVOTECH Fits: 3.6L V6 DX551
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Front Inner
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MEVOTECH Fits: 3.6L V6 DX877
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Front Outer
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This table covers the boots that keep grease in a CV joint. Typical signs include a split boot, grease flung around the joint, or a click once grit is inside. A boot caught early is a kit. Once the joint has clicked, the joint itself is usually worn.

CV Joint Boot Band

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 364038
🇺🇸 US 🇨🇦 CA
Front Outboard OuterSingle Use
Fitment notes — GM GENUINE 364038
Front Outboard OuterSingle UseLarge ClampStamped 95.4MM93MM Inside Diameter
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GM GENUINE Fits: 3.6L V6 93170250
🇺🇸 US 🇨🇦 CA
Fits Rear Outboard InnerAWD
Fitment notes — GM GENUINE 93170250
Fits:
Rear Outboard InnerAWD30MM Inside Diameter
or:
Front Outboard InnerAWDTrans.Code 6T706 speed Automatic trans.30MM Inside Diameter
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GM GENUINE Fits: 3.6L V6 93170396
🇺🇸 US 🇨🇦 CA
Rear Inboard InnerAWD
Fitment notes — GM GENUINE 93170396
Rear Inboard InnerAWDTrans.Code 6T706 Speed Automatic Trans.88.5MM
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This table covers the bands that clamp a CV boot to the joint.

CV Joint Lock Ring

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 13317915
🇺🇸 US 🇨🇦 CA
Front InnerINSIDE GEAR SIDE JOINT
Fitment notes — GM GENUINE 13317915
Front InnerINSIDE GEAR SIDE JOINT30.2MM OD
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GM GENUINE Fits: 3.6L V6 90121202
🇺🇸 US 🇨🇦 CA
Rear InnerAWD
Fitment notes — GM GENUINE 90121202
Rear InnerAWDTrans.Code 6T706 speed Automatic trans.Snap Ring Circlip28mm Spline DiameterSingle Use27.3MM OD2MM Thick
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GM GENUINE Fits: 3.6L V6 13317913
🇺🇸 US 🇨🇦 CA
Front InnerSNAP RING INSIDE WHEEL SIDE JOINT
Fitment notes — GM GENUINE 13317913
Front InnerSNAP RING INSIDE WHEEL SIDE JOINTROUND FORM
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GM GENUINE Fits: 3.6L V6 22727024
🇺🇸 US 🇨🇦 CA
Front InnerSNAP RING GEAR SIDE ON AXLE
Fitment notes — GM GENUINE 22727024
Front InnerSNAP RING GEAR SIDE ON AXLE28.8X2.5X29.5
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This table covers the CV Joint Lock rings.

Differential Carrier

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 24260304
🇺🇸 US 🇨🇦 CA
RemanAxle Shaft Spline Quantity: 27
Fitment notes — GM GENUINE 24260304
RemanAxle Shaft Spline Quantity: 27
FrontFWDTrans.Code 6T706 Speed Automatic Trans.2.77 Ratio (D70)
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GM GENUINE Fits: 3.6L V6 24260306
🇺🇸 US 🇨🇦 CA
Reman
Fitment notes — GM GENUINE 24260306
Reman
FrontAWDTrans.Code 6T706 Speed Automatic Trans.2.77 Ratio (D70)
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This table covers the carriers that hold the differential gears in the axle.

Differential Carrier Bearing / Race

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 3.6L V6 24279803
🇺🇸 US 🇨🇦 CA
Race Only
Fitment notes — GM GENUINE 24279803
Race Only
FrontTorque Converter and Differential Housing Side
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GM GENUINE Fits: 3.6L V6 24258422
🇺🇸 US 🇨🇦 CA
Race Only
Fitment notes — GM GENUINE 24258422
Race Only
FrontRHSAutomatic Transmission Case Side
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GM GENUINE Fits: 3.6L V6 24258421
🇺🇸 US 🇨🇦 CA
FrontTrans.Code 6T70
Fitment notes — GM GENUINE 24258421
FrontTrans.Code 6T706 Speed Automatic Trans.Automatic Transmission CASE SIDE2.77 Ratio (D70)
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GM GENUINE Fits: 3.6L V6 24231136
🇺🇸 US 🇨🇦 CA
FrontBase Model or Leather or Sport Touring
Fitment notes — GM GENUINE 24231136
FrontBase Model or Leather or Sport Touring120MM O.D.
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GM GENUINE Fits: 3.6L V6 24279804
🇺🇸 US 🇨🇦 CA
Front RightTrans.Code 6T70
Fitment notes — GM GENUINE 24279804
Front RightTrans.Code 6T70Torque Converter and Differential Housing Side2.77 Ratio (D70)
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This table covers the bearings and races that support the differential carrier.

Differential Carrier Bolt

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 11609598
🇺🇸 US 🇨🇦 CA
AWDM12X1.75X80.9
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This table covers the Differential Carrier bolts.

Differential Carrier Bushing

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 13243708
🇺🇸 US 🇨🇦 CA
RearAWD
Fitment notes — GM GENUINE 13243708
RearAWDH-Arm Rear Axle (GNE)
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GM GENUINE Fits: 3.6L V6 13243707
🇺🇸 US 🇨🇦 CA
AWD
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This table covers the Differential Carrier bushings. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles.

Differential Carrier Fluid Baffle

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 24263150
🇺🇸 US 🇨🇦 CA
Trans. code 6T706 Speed Automatic Trans.
Fitment notes — GM GENUINE 24263150
Trans. code 6T706 Speed Automatic Trans.2.77 Ratio (D70)
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This table covers the baffles that control oil in the differential carrier.

Differential Carrier Shim

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 24234094
🇺🇸 US 🇨🇦 CA
Front DifferentialBROWN
Fitment notes — GM GENUINE 24234094
Front DifferentialBROWN0.494 MM
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GM GENUINE Fits: 3.6L V6 24234095
🇺🇸 US 🇨🇦 CA
Front DifferentialPURPLE
Fitment notes — GM GENUINE 24234095
Front DifferentialPURPLE0.545 MM
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GM GENUINE Fits: 3.6L V6 24234096
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE 24234096
Black
Front Differential0.596 MM
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GM GENUINE Fits: 3.6L V6 24234097
🇺🇸 US 🇨🇦 CA
Front DifferentialPINK
Fitment notes — GM GENUINE 24234097
Front DifferentialPINK0.647 MM
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GM GENUINE Fits: 3.6L V6 24234098
🇺🇸 US 🇨🇦 CA
Front DifferentialDARK BLUE
Fitment notes — GM GENUINE 24234098
Front DifferentialDARK BLUE0.698 MM
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This table covers the Differential Carrier shims.

Differential Clutch Pack

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 85632233
🇺🇸 US 🇨🇦 CA
Internal Tooth Quantity: 26
Fitment notes — GM GENUINE 85632233
Internal Tooth Quantity: 26
AWD
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This table covers the clutch packs in a limited-slip or locking differential.

Differential Clutch Pressure Control Valve

Brand Part Number Markets Notes Buy
DORMAN Fits: 3.6L V6 699010
🇺🇸 US 🇨🇦 CA
AWD
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GM GENUINE Fits: 3.6L V6 13280097
🇺🇸 US 🇨🇦 CA
Fits AWD
Fitment notes — GM GENUINE 13280097
Fits:
AWD
or:
Leather or Sport TouringElectronic Positraction Limited Slip Axle (G96)
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This table covers the Differential Clutch Pressure Control valves. Typical signs include a circuit that will not hold, a whistle, or a code for this valve. A stuck valve is often debris. Clean the ports before installing the new one.

Differential Control Module

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 19435910
🇺🇸 US 🇨🇦 CA
Reman
Fitment notes — GM GENUINE 19435910
Reman
AWDRefurbishedOrder with Differential Clutch Valve Mounting Plate 13280057
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This table covers the Differential control modules.

Differential Cover Bolt

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 13280041
🇺🇸 US 🇨🇦 CA
FrontAWD
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This table covers the Differential Cover bolts.

Differential Cover Plug

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 13280045
🇺🇸 US 🇨🇦 CA
AWD
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This table covers the Differential Cover plugs. Typical signs include a leak at the drain or glow-plug hole, or a plug that has rounded off. Replace the crush washer and torque to the spec in the notes.

Differential Fill / Drain Plug

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 55573646
🇺🇸 US 🇨🇦 CA
Includes O-Ring
Fitment notes — GM GENUINE 55573646
Includes O-Ring
AWDM20X1.5X1629 ODMagnetZinc CoatedSquare/Ratchet Style
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This table covers the Differential Fill drain plugs.

Differential Housing Bolt

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 13280065
🇺🇸 US 🇨🇦 CA
AWD
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This table covers the Differential Housing bolts.

Differential Oil Pump Hose

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 20813559
🇺🇸 US 🇨🇦 CA
AWD
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This table covers the Differential Oil Pump hoses. Typical signs include swelling, cracks, a soft spot, or a leak at a clamp. Replace adjacent aged hoses while the system is drained — they share the same heat cycle.

Differential Oil Slinger

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 24239418
🇺🇸 US 🇨🇦 CA
Trans. code 6T706 Speed Automatic Trans.
Fitment notes — GM GENUINE 24239418
Trans. code 6T706 Speed Automatic Trans.2.77 Ratio (D70)
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This table covers the slingers that keep gear oil off the pinion seal.

Differential Pinion Flange

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 13334081
🇺🇸 US 🇨🇦 CA
AWDPLASTIC DIFFERENTIAL DUST COVER
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This table covers the flanges that connect the driveshaft to the differential pinion.

Differential Pinion Seal

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 13296280
🇺🇸 US 🇨🇦 CA
RightAWD
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TIMKEN Fits: 3.6L V6 SL260582
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
RearLeather or Premium
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This table covers the seals at the differential pinion yoke. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.

Differential Seal

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 24225582
🇺🇸 US 🇨🇦 CA
Trans. code 6T706 Speed Automatic Trans.
Fitment notes — GM GENUINE 24225582
Trans. code 6T706 Speed Automatic Trans.2.77 Ratio (D70)
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GM GENUINE Fits: 3.6L V6 13334079
🇺🇸 US 🇨🇦 CA
AWDFlange
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GM GENUINE Fits: 3.6L V6 13334078
🇺🇸 US 🇨🇦 CA
AWDCLUTCH COVER
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This table covers the seals at the Differential. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.

Differential Washer

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 3.6L V6 24234088
🇺🇸 US 🇨🇦 CA
FrontWhite
Fitment notes — GM GENUINE 24234088
FrontWhite0.851 mmPinion Gear Thrust Washer
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GM GENUINE Fits: 3.6L V6 24234081
🇺🇸 US 🇨🇦 CA
FrontBrown
Fitment notes — GM GENUINE 24234081
FrontBrown0.494 mmPinion Gear Thrust Washer
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GM GENUINE Fits: 3.6L V6 24234082
🇺🇸 US 🇨🇦 CA
FrontPurple
Fitment notes — GM GENUINE 24234082
FrontPurple0.545 mmPinion Gear Thrust Washer
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GM GENUINE Fits: 3.6L V6 24234083
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE 24234083
Black
Front0.596 mmPinion Gear Thrust Washer
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GM GENUINE Fits: 3.6L V6 24234084
🇺🇸 US 🇨🇦 CA
FrontPink
Fitment notes — GM GENUINE 24234084
FrontPink0.647 mmPinion Gear Thrust Washer
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GM GENUINE Fits: 3.6L V6 24234085
🇺🇸 US 🇨🇦 CA
FrontBlue
Fitment notes — GM GENUINE 24234085
FrontBlue0.698 mmPinion Gear Thrust Washer
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This table covers the Differential washers.

Drive Shaft

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 22960220
🇺🇸 US 🇨🇦 CA
RearAWD
Fitment notes — GM GENUINE 22960220
RearAWDTrans.Code 6T706 Speed Automatic Trans.with RPO Code AAG7 AASC 9771
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VAICO Fits: 3.6L V6 V510490
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Grade: OEFront Right
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This table covers the driveshafts that carry torque from the transmission or transfer case.

Drive Shaft Bolt

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 11588725
🇺🇸 US 🇨🇦 CA
FrontFWD
Fitment notes — GM GENUINE 11588725
FrontFWDTrans.Code 6T706 Speed Automatic Trans.M8X1.25X35
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GM GENUINE Fits: 3.6L V6 13324897
🇺🇸 US 🇨🇦 CA
AWD
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This table covers the Drive Shaft bolts.

Gear Oil

Brand Part Number Markets Notes Buy
ACDELCO Fits: 3.6L V6 104016
🇺🇸 US
1 Quart75W-90
Fitment notes — ACDELCO 104016
1 Quart75W-90Synthetic
Rear DifferentialAWDGL-5with Locking/Limited Slip Differentials (Use ADDITIVE88900330 US or 00992694 Canada)
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This table covers the gear oils specified for the axle or transfer case. Typical signs include a low-oil lamp, knocking, or oil that has gone thin before the next interval. Match the viscosity and spec in the notes, not just the weight on the bottle.

Gear Oil Additive

Brand Part Number Markets Notes Buy
ACDELCO Fits: 3.6L V6 104003
🇺🇸 US
Friction Modifier limited-Slip Differential (4 OZ) 117 ML
Fitment notes — ACDELCO 104003
Friction Modifier limited-Slip Differential (4 OZ) 117 ML
AWD
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This table covers the Gear Oil additives.

Retaining Ring

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 24231157
🇺🇸 US 🇨🇦 CA
FrontBase Model or Leather or Sport Touring
Fitment notes — GM GENUINE 24231157
FrontBase Model or Leather or Sport Touring153.59 Installed Nominal160 Free Outside Diameter2.2THKSnap RingDifferential Carrier Internal Gear Retaining Ring
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This table covers the Retaining rings.

Transfer Case Bolt

Brand Part Number Markets Notes Buy
ELRING Fits: 3.6L V6 795390
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Housing Bolt
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This table covers the Transfer Case bolts.

Transfer Case Gasket

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 55566355
🇺🇸 US 🇨🇦 CA
AWDTrans. code 6T70
Fitment notes — GM GENUINE 55566355
AWDTrans. code 6T706 speed Automatic trans.
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This table covers the gaskets that seal the Transfer Case. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.

Transfer Case Input Shaft Seal

Brand Part Number Markets Notes Buy
NATIONAL Fits: 3.6L V6 711149
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
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This table covers the seals at the Transfer Case Input Shaft. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.

Transfer Case Output Shaft Seal

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.6L V6 55578408
🇺🇸 US 🇨🇦 CA
RearAWD
Fitment notes — GM GENUINE 55578408
RearAWDTrans. code 6T706 speed Automatic trans.
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NATIONAL Fits: 3.6L V6 711150
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Front Inner
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NATIONAL Fits: 3.6L V6 711151
🇺🇸 US 🇨🇦 CA 🇲🇽 MX
Rear
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This table covers the seals at the Transfer Case Output Shaft. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.

Buying Drivetrain Parts for a 2016 Buick Lacrosse

On this vehicle, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware.

  • Match the engine first. Every drivetrain part here is engine-specific; each row shows which engine(s) it fits.
  • Read the notes on each row for position, trim and spec qualifiers before you order.
  • Where labor overlaps, replace the differential or transfer-case fluid with any axle or seal job while everything is already open.
  • Cross-reference the manufacturer part number against your old part or a service-manual listing.

Start with the largest groups on this page: CV Axle and Differential Washer .

Frequently Asked Questions

How many drivetrain parts fit the 2016 Buick Lacrosse?

Our catalog currently lists 92 drivetrain parts for the 2016 Buick Lacrosse across 40 subcategories and 14 brands, covering both the 2.4L L4 and the 3.6L V6. Each part is matched to the engine(s) it fits.

Do drivetrain parts differ between 2016 Buick Lacrosse engines?

Yes. Every drivetrain part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.

What are the signs of drivetrain problems on a 2016 Buick Lacrosse?

Common symptoms include clicking in tight turns, a clunk when shifting between drive and reverse, vibration that builds with speed, or gear oil on the inside of a wheel. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.

What should I replace at the same time?

Where labor overlaps, replace the differential or transfer-case fluid with any axle or seal job while everything is already open.

What do the market flags (US, CA, MX) on each part mean?

They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2016 Buick Lacrosse was originally sold in the US, the safest choice is a part marked for the US market.

How do I make sure a part fits my 2016 Buick Lacrosse?

First match the engine — each row shows which engine(s) the part fits. Then a torn CV boot caught early is a cheap boot kit; caught late it is a whole axle — inspect before deciding which to buy. The notes column carries position and trim qualifiers where they apply.

Other Parts for the 2016 Buick Lacrosse

Drivetrain Parts for Other Buick Lacrosse Years

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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.