2003 GMC SIERRA 1500 HD Transmissions Transmission & Drivetrain - In Stock Filter Options - Vendor In Stock Filter Options

Pioneer 168-Tooth Flexplate FRA-452

Flexplate, Direct Replacement, New Style without Spacer, 168-Tooth, Chevrolet, LS, Each

Part Number: PIO-FRA452

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TCI Beast Automatic Transmission Sun Shells 373900

TCI Beast Automatic Transmission Sun Shells 373900

Sun Shell, Automatic Transmission, Steel, GM, 700R4, 4L60E, 4L65E, Each

Part Number: TCI-373900

5.0 out of 5 stars ( 9 )

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PRW Flexplate Fasteners 1003907

Flexplate Bolts, 11mm x 1.5 Thread, 12-Point, .880 Length, GM Gen III/IV, Set of 6

Part Number: PQX-1003907

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Chevrolet Performance Flexplate Bolts 19257940

Flexplate Bolt, Steel, 11mm x 1.5, 1.000 in. UHL, For Use With 12563532 Flexplate Spacer, Chevy, Gen III, Each

Part Number: NAL-19257940

1.5 out of 5 stars ( 4 )

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Dorman Torque Converter Bolts 14099

Bolts, Torque Converter, 10mm x 1.5, Steel, Natural, 0.887 in. UHL, Buick, Cadillac, Chevrolet, GMC, Isuzu, Oldsmobile, Pontiac, Saab, Set of 3

Part Number: RNB-14099

5.0 out of 5 stars ( 3 )

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Lokar Hi-Tech Flexible Braided Stainless Transmission Dipsticks TD-34L80TM

Transmission Dipstick, Braided Stainless Steel, Natural, Transmission Mount, 4L80E, Each

Part Number: LOK-TD-34L80TM

3.0 out of 5 stars ( 1 )

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TCI Automatic Transmission Controller Components 302611

Automatic Transmission Controller Component, Bluetooth Adapter, for Use Adapting the TCI EZ-TCU To Work with Bluetooth, GM, TCI, Each

Part Number: TCI-302611

1.0 out of 5 stars ( 1 )

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Hays Twister Full Race 3,200-3,600 Stall Torque Converter 97-1J32F

Torque Converters, Twister Full Race, 3,200-3,600 rpm Stall Speed Range, 35-spline, 9.600 in. Diameter, Chevrolet 4L80-E, Cadillac, Chevy, GMC, Each

Part Number: HAY-97-1J32F

Not Yet Reviewed

Estimated Ship Date: Feb 24, 2026 if ordered today

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Estimated Ship Date: Feb 24, 2026 if ordered today

ACDelco Torque Converter Dust Covers 24261712

Flywheel And Flexplate Dust Covers, Torque Converter, Plastic, Black, GM, Each

Part Number: ADO-24261712

4.67 out of 5 stars ( 6 )

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ATP Automatic Transmission Filter Kits TF-174

Automatic Transmission Filters, Rubber Gasket, 4L60-E, 4L65-E, 4L80-E, 4L80-E-HD/MN8, 4L85-E, Kit

Part Number: ATP-TF174

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National Bearing Automatic Transmission Selector Shaft Seals 8792S

Seal, Automatic Transmission Shift Shaft, Steel/Rubber, GM, Each

Part Number: NTL-8792S

3.67 out of 5 stars ( 3 )

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B&M Street and Strip Transmissions 118002BM

Automatic Transmission, Street and Strip, Automatic Valve Body, Forward Shift Pattern, Chevy, GMC, 4L80E, RWD

Part Number: BMM-118002

3.29 out of 5 stars ( 7 )

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ACDelco Transmission Fluid Dipstick Seals 01259475

Transmission Fluid Dipstick Components, Seals, Tube Grommet, Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, Saab, Saturn, Each

Part Number: ADO-1259475

4.33 out of 5 stars ( 6 )

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TCI Replacement Steel Transmission Pans 378011

Automatic Transmission Pan, Stock, Steel, Chrome, GM, 700R4, 4L60E, Each

Part Number: TCI-378011

4.67 out of 5 stars ( 3 )

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ACDelco Flywheel Housing Inspection Covers 24261713

Flywheel And Flexplate Dust Covers, Flywheel Housing Inspection, Plastic, Black, Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, Oldsmobile, Saab, Each

Part Number: ADO-24261713

4.5 out of 5 stars ( 2 )

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Pioneer 168-Tooth Flexplate FRA-471HD

FLEXPLATE ASSEMBLY

Part Number: PIO-FRA-471HD

Not Yet Reviewed

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ACDelco Transmission Solenoids 19139322

Transmission Solenoids, TCC/Lock-up Solenoid, GM, Each

Part Number: ADO-214-1892

5.0 out of 5 stars ( 3 )

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ACDelco Automatic Transmission Shift Shaft Seals 19340257

Automatic Transmission Shift Shaft Seal, Nitrile, Buick, Cadillac, Chevy, Each

Part Number: ADO-8792S

1.0 out of 5 stars ( 2 )

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ACDelco GM Genuine Parts Transmission Vent Tubes 25892279

Vent, Transfer Case, Each

Part Number: ADO-25892279

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TCI Sprags and Roller Clutch Kits 373601

Sprag/Roller Clutch, 29-Element, Forward Sprag, Low-Reverse Clutch, GM, 4L60E/700R4, Each

Part Number: TCI-373601

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SKF Bearings Pilot Bearings 6302-VSP43

Pilot Bearing and Bushings, Clutch Pilot Bearing, Roller, Steel, Natural Finish, 1.704 in. OD, 0.591 in. ID, 0.512 in. Width, Chevy, GMC, Each

Part Number: SKF-6302-VSP43

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ATP Automatic Transmission Filter Kits B-174

Transmission Filter, Direct-Fit, Kit

Part Number: ATP-B174

4.75 out of 5 stars ( 4 )

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RAM Competition Pressure Plates 402L

Pressure Plate, Diaphragm-Style, 11 in. Disc Diameter, Chevy, GMC, Each

Part Number: RAM-402L

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TCI 10-Vane Billet Rotor Kits 373400

Billet Rotor, 10-Vane, Automatic Transmission Pump, GM, 4L60E, 700R4, Each

Part Number: TCI-373400

5.0 out of 5 stars ( 2 )

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ACDelco GM Genuine Parts Automatic Transmission Servo Pistons 24223081

Automatic Transmission Servo Piston, 4L80, 4L85, Chevrolet, GMC, Kit

Part Number: ADO-24223081

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