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Welcome to Source One Auto Parts!

Welcome to Source One Auto Parts!

General Motors

Shop our complete catalog of genuine General Motors OEM parts. Our GM inventory covers Chevrolet, Cadillac, Buick, GMC, and Saturn vehicles — airbags, control modules, HVAC components, body parts, drivetrain components, and more, all sourced from GM factory surplus.

General Motors vehicles are built with a wide range of platform-specific components. Our factory-original GM parts are the correct replacement for your specific vehicle — same connector, same calibration, same mechanical specification as the part installed at the factory.

Browse by category or search by GM part number to find exactly what you need. Contact us at 269-343-3323 for part identification and fitment assistance.

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New OEM GM Radiator 600W Cooling Fan Assembly 2016-19 Camaro ATS CTS 2.0L 3.6L-1
$967.88 - $967.88
$967.88
$967.88 - $967.88
$967.88

New OEM GM Radiator 600W Cooling Fan Assembly 2016-19 Camaro ATS CTS 2.0L 3.6L

Only 3 left!

Cooling Pack Assembly, Includes: Radiator, Cooling Fan (600W)/Shroud/Blade/Module, A/C Condenser, Intercooler Description: Cooling Pack Asse...

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SKU: 2020318

$967.88 - $967.88
$967.88
$967.88 - $967.88
$967.88
New OEM GM Radiator HD Cooling Fan Assembly 2016-19 Camaro ATS CTS 3.6L-1
$860.21 - $860.21
$860.21
$860.21 - $860.21
$860.21

New OEM GM Radiator HD Cooling Fan Assembly 2016-19 Camaro ATS CTS 3.6L

Only 2 left!

Cooling Pack Assembly, Includes: Radiator, Cooling Fan (600W)/Shroud/Blade/Module, A/C Condenser Description: Cooling Pack Assembly, Include...

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SKU: 2020317

$860.21 - $860.21
$860.21
$860.21 - $860.21
$860.21
New OEM GM Heater Coolant Pump 2016-18 Cadillac ATS CT6 CTS 2.0L 23208583-1
$96.75 - $96.75
$96.75
$96.75 - $96.75
$96.75

New OEM GM Heater Coolant Pump 2016-18 Cadillac ATS CT6 CTS 2.0L 23208583

in stock

Heater Coolant Pump Description: Heater Coolant Pump Part Number: 23208583 Condition: New OEM, Generic Packaging Other Info: This i...

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SKU: 2020313

$96.75 - $96.75
$96.75
$96.75 - $96.75
$96.75
Left Rear Side Door Sill Trim Plate 2016-2019 Cadillac CTS V 23120051-1
$44.36 - $44.36
$44.36
$44.36 - $44.36
$44.36

Left Rear Side Door Sill Trim Plate 2016-2019 Cadillac CTS V 23120051

in stock

Left Hand (Driver's Side) Rear Side Door Sill Trim Plate With CTS "V" Logo Description: Left Hand (Driver's Side) Rear Side Door Sill Trim P...

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SKU: 2020310

$44.36 - $44.36
$44.36
$44.36 - $44.36
$44.36
New OEM GM Heater Coolant Pump 2016-18 Cadillac CTS 16-19 ATS 3.6L 23170416-1
$60.45 - $60.45
$60.45
$60.45 - $60.45
$60.45

New OEM GM Heater Coolant Pump 2016-18 Cadillac CTS 16-19 ATS 3.6L 23170416

in stock

Heater Coolant Pump Description: Heater Coolant Pump Part Number: 23170416 Condition: New OEM, Generic Packaging Other Info: This i...

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SKU: 2020312

$60.45 - $60.45
$60.45
$60.45 - $60.45
$60.45
Transmission Mount New OEM GM 2016-2019 Cadillac CTS Vsport 84119716-1
$97.52 - $97.52
$97.52
$97.52 - $97.52
$97.52

Transmission Mount New OEM GM 2016-2019 Cadillac CTS Vsport 84119716

Only 5 left!

Transmission Mount, Fits 2016-2019 Cadillac CTS, 3.6L Vsport Description: Transmission Mount, Fits 2016-2019 Cadillac CTS, 3.6L Vsport Par...

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SKU: 2020292

$97.52 - $97.52
$97.52
$97.52 - $97.52
$97.52
New OEM GM Video Processing Module 2016-19 Cadillac CTS 84489485-1
$366.26 - $366.26
$366.26
$366.26 - $366.26
$366.26

New OEM GM Video Processing Module 2016-19 Cadillac CTS 84489485

Only 3 left!

Video Processing Module Description: Video Processing Module Part Number: 84459970, 84489485 Condition: New OEM, Generic Packaging Oth...

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SKU: 2020282

$366.26 - $366.26
$366.26
$366.26 - $366.26
$366.26
New OEM GM Windshield Wiper System Module Assembly 2014-19 Cadillac CTS 22773541-1
$154.25 - $154.25
$154.25
$154.25 - $154.25
$154.25

New OEM GM Windshield Wiper System Module Assembly 2014-19 Cadillac CTS 22773541

in stock

Wiper Transmission, Motor & Linkage, Module Description: Wiper Transmission, Motor & Linkage, Module Part Number: 22773541 Condi...

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SKU: 2020291

$154.25 - $154.25
$154.25
$154.25 - $154.25
$154.25
New OEM GM Transfer Case Control Module 2017-19 Cadillac ATS CTS 84160285-1
$120.90 - $120.90
$120.90
$120.90 - $120.90
$120.90

New OEM GM Transfer Case Control Module 2017-19 Cadillac ATS CTS 84160285

in stock

Transfer Case Control Module, Fits 2017-2019 Cadillac ATS and CTS Description: Transfer Case Control Module, Fits 2017-2019 Cadillac ATS and...

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SKU: 2020280

$120.90 - $120.90
$120.90
$120.90 - $120.90
$120.90
New OEM GM Park Assist Control Module 2017-19 Cadillac CTS 2017 XTS 84172656-1
$61.01 - $61.01
$61.01
$61.01 - $61.01
$61.01

New OEM GM Park Assist Control Module 2017-19 Cadillac CTS 2017 XTS 84172656

in stock

Park Assist Control Module Description: Park Assist Control Module Part Number: 84172656 Condition: New OEM, Generic Packaging Other I...

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SKU: 2020277

$61.01 - $61.01
$61.01
$61.01 - $61.01
$61.01
New OEM GM Park Assist Control Module 2017-19 Cadillac CTS 84172654-1
$47.64 - $47.64
$47.64
$47.64 - $47.64
$47.64

New OEM GM Park Assist Control Module 2017-19 Cadillac CTS 84172654

in stock

Park Assist Control Module, Fits 2017-2019 Cadillac CTS (Except 6.2L, Without Front Park Assist Description: Park Assist Control Module, Fit...

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SKU: 2020276

$47.64 - $47.64
$47.64
$47.64 - $47.64
$47.64
New OEM GM Keyless Entry Control Module 2017 Escalade Yukon Tahoe 13523241-1
$43.23 - $43.23
$43.23
$43.23 - $43.23
$43.23

New OEM GM Keyless Entry Control Module 2017 Escalade Yukon Tahoe 13523241

in stock

Keyless Entry Control Module Description: Keyless Entry Control Module Part Number: 13523236 Condition: New OEM, Generic Packaging Oth...

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SKU: 2020275

$43.23 - $43.23
$43.23
$43.23 - $43.23
$43.23
OnStar Communication Interface Module 2018-19 Cadillac ATS CTS XTS 84431137-1
$83.21 - $83.21
$83.21
$83.21 - $83.21
$83.21

OnStar Communication Interface Module 2018-19 Cadillac ATS CTS XTS 84431137

Only 3 left!

OnStar Communication Interface Module (Without Smartphone Interface Option) Description: OnStar Communication Interface Module (Without Smar...

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SKU: 2020265

$83.21 - $83.21
$83.21
$83.21 - $83.21
$83.21
New OEM GM Electronic Suspension Control Module 2017-19 Cadillac CTS 84214669-1
$157.14 - $157.14
$157.14
$157.14 - $157.14
$157.14

New OEM GM Electronic Suspension Control Module 2017-19 Cadillac CTS 84214669

in stock

Electronic Suspension Control Module Description: Electronic Suspension Control Module Part Number: 84214669 Condition: New OEM, Generic...

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SKU: 2020269

$157.14 - $157.14
$157.14
$157.14 - $157.14
$157.14
Impact Sensor and Diagnostics Module 2017-19 ATS CTS XTS Cruze 13520995-1
$360.71 - $360.71
$360.71
$360.71 - $360.71
$360.71

Impact Sensor and Diagnostics Module 2017-19 ATS CTS XTS Cruze 13520995

in stock

Impact Sensor and Diagnostics Module

SKU: 2020263

$360.71 - $360.71
$360.71
$360.71 - $360.71
$360.71
New OEM GM Active Safety Communication Module 2017-19 Cadillac CTS 84423365-1
$138.71 - $138.71
$138.71
$138.71 - $138.71
$138.71

New OEM GM Active Safety Communication Module 2017-19 Cadillac CTS 84423365

Only 3 left!

Active Safety Communication Module Description: Active Safety Communication Module Part Number: 84497072, 84423365 Condition: New OEM, G...

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SKU: 2020262

$138.71 - $138.71
$138.71
$138.71 - $138.71
$138.71
New OEM GM Active Safety Communication Module 84737638-1
$55.46 - $55.46
$55.46
$55.46 - $55.46
$55.46

New OEM GM Active Safety Communication Module 84737638

Only 4 left!

Active Safety Communication Module Description: Active Safety Communication Module Part Number: 84451866, 84737638, 84559185 Condition: ...

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SKU: 2020261

$55.46 - $55.46
$55.46
$55.46 - $55.46
$55.46
Outside Rearview Mirror Switchblade Silver GAN LH 2015-19 Cadillac CTS 84348267-1
$416.21 - $416.21
$416.21
$416.21 - $416.21
$416.21

Outside Rearview Mirror Switchblade Silver GAN LH 2015-19 Cadillac CTS 84348267

Only 5 left!

Outside Rearview Mirror, Painted Switchblade Silver (GAN, WA636R), Left Hand (Driver's Side), Manual Folding, With Lane Change Assist, Defrost, ...

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SKU: 2020259

$416.21 - $416.21
$416.21
$416.21 - $416.21
$416.21
Outside Rearview Mirror Switchblade Silver GAN RH 2016-19 Cadillac CTS 84348247-1
$260.81 - $260.81
$260.81
$260.81 - $260.81
$260.81

Outside Rearview Mirror Switchblade Silver GAN RH 2016-19 Cadillac CTS 84348247

Only 4 left!

Outside Rearview Mirror, Painted Switchblade Silver (GAN, WA636R), Right Hand (Passenger's Side), Manual Folding, Defrost, Memory, Turn Signal, ...

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SKU: 2020258

$260.81 - $260.81
$260.81
$260.81 - $260.81
$260.81
Outside Rearview Mirror Switchblade Silver GAN LH 2016-19 Cadillac CTS 84348246-1
$277.46 - $277.46
$277.46
$277.46 - $277.46
$277.46

Outside Rearview Mirror Switchblade Silver GAN LH 2016-19 Cadillac CTS 84348246

Only 2 left!

Outside Rearview Mirror, Painted Switchblade Silver (GAN, WA636R), Left Hand (Driver's Side), Manual Folding, Defrost, Memory, Turn Signal, Auto...

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SKU: 2020257

$277.46 - $277.46
$277.46
$277.46 - $277.46
$277.46
Outside Rearview Mirror Switchblade Silver GAN LH 2016-19 Cadillac CTS 84348244-1
$205.31 - $205.31
$205.31
$205.31 - $205.31
$205.31

Outside Rearview Mirror Switchblade Silver GAN LH 2016-19 Cadillac CTS 84348244

Only 1 left!

Outside Rearview Mirror, Painted Switchblade Silver (GAN, WA636R), Left Hand (Driver's Side), Manual Folding, Defrost, Memory, Turn Signal, Flat...

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SKU: 2020255

$205.31 - $205.31
$205.31
$205.31 - $205.31
$205.31
Outside Rearview Mirror Satin Steel Gray G9K RH 2015-19 Cadillac CTS 84348266-1
$416.21 - $416.21
$416.21
$416.21 - $416.21
$416.21

Outside Rearview Mirror Satin Steel Gray G9K RH 2015-19 Cadillac CTS 84348266

Only 5 left!

Outside Rearview Mirror, Painted Satin Steel Gray Metallic (G9K, WA464C), Right Hand (Passenger's Side), Manual Folding, With Lane Change Assist...

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SKU: 2020254

$416.21 - $416.21
$416.21
$416.21 - $416.21
$416.21
Outside Rearview Mirror Satin Steel Gray G9K LH 2015-19 Cadillac CTS 84348267-1
$416.21 - $416.21
$416.21
$416.21 - $416.21
$416.21

Outside Rearview Mirror Satin Steel Gray G9K LH 2015-19 Cadillac CTS 84348267

Only 1 left!

Outside Rearview Mirror, Painted Satin Steel Gray Metallic (G9K, WA464C), Left Hand (Driver's Side), Manual Folding, With Lane Change Assist, De...

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SKU: 2020253

$416.21 - $416.21
$416.21
$416.21 - $416.21
$416.21
Outside Rearview Mirror Satin Steel Gray G9K RH 2016-19 Cadillac CTS 84348247-1
$260.81 - $260.81
$260.81
$260.81 - $260.81
$260.81

Outside Rearview Mirror Satin Steel Gray G9K RH 2016-19 Cadillac CTS 84348247

Only 3 left!

Outside Rearview Mirror, Painted Satin Steel Gray Metallic (G9K, WA464C), Right Hand (Passenger's Side), Manual Folding, Defrost, Memory, Turn S...

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SKU: 2020252

$260.81 - $260.81
$260.81
$260.81 - $260.81
$260.81

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