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

B&M Traveler 1,900-2,100 Stall Torque Converter 70431

Torque Converter, Traveler, Chevy, 4L80E, 1,900-2,100 rpm Stall Range, Each

Part Number: BMM-70431

1.0 out of 5 stars ( 3 )

Estimated Ship Date: Feb 23, 2026 if ordered today

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Estimated Ship Date: Feb 23, 2026 if ordered today

TCI EZ-TCU Transmission Controller Main Harnesses 30261

TCI EZ-TCU Transmission Controller Main Harnesses 30261

Wiring Harness, EZ-TCU Transmission Controller Main Harness, Each

Part Number: TCI-30261

Not Yet Reviewed

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ACDelco Automatic Transmission Fluid Pan Magnets 24239049

Automatic Transmission Pan Magnet, THM125C, THM440, 4T60, ME9, TH400, 4l80, Buick, Cadillac, Chevrolet, Each

Part Number: ADO-24239049

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Timken Automatic Transmission Selector Shaft Seals 8792S

Seal, Automatic Transmission Selector Shaft, Each

Part Number: TMK-8792S

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Today

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PRW Flywheel Fasteners 1001282

Flywheel Bolts, 12pt Head, M11 x 1.5 in., 0.800 in. UHL, 8740 Chromoly, Black, LS, Set of 6

Part Number: PQX-1001282

Not Yet Reviewed

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ACDelco GM Genuine Parts Transmission Vent Tubes 24200374

Transmission Vent Tubes, ACDelco GM Genuine Parts Transmission Vent Tubes, Steel, Silver, Buick, Cadillac, Chevrolet, GMC, Oldsmobile, Pontiac, Each

Part Number: ADO-24200374

Not Yet Reviewed

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Chevrolet Performance Flexplate Bolts 11589040

Flexplate Bolt, Steel, Black Oxide, 10mm x 1.50 Thread, Hex, 1.400 in. Underhead, Chevrolet, Each

Part Number: NAL-11589040

5.0 out of 5 stars ( 1 )

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ACDelco Transmission Drain Plugs 24233099

Drain Plug, Steel, Stock Replacement, Each

Part Number: ADO-24233099

5.0 out of 5 stars ( 1 )

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ACDelco Gold Automatic Transmission Fluid Filters 25325570

Automatic Transmission Filter, Chevrolet, GMC, Each

Part Number: ADO-TF329

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Standard Motor Automatic Transmission Control Solenoids TCS13

Transmission Control Solenoid, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: SMP-TCS13

4.0 out of 5 stars ( 4 )

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Standard Motor Automatic Transmission Control Solenoids TCS39

Transmission Control Solenoid, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: SMP-TCS39

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Silver Sport Transmission Bellhousings BHG-12005

Bellhousing Chevy LS

Part Number: IST-BHG-12005

Not Yet Reviewed

Estimated Ship Date: Mar 11, 2026 if ordered today

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Estimated Ship Date: Mar 11, 2026 if ordered today

ATP Automatic Transmission Inline Filter Kits JX-150

Transmission Filter, Inline, Hose Barbs, fits 5/16 in. Lines, 2 Hoses, 4 Clamps, Kit

Part Number: ATP-JX150

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Hays Twister Full Race 3,200-3,600 Stall Torque Converter 97-1H32F

Torque Converters, Twister Full Race, 3,200-3,600 rpm Stall Speed Range, 30-spline, 9.600 in. Diameter, 4L60-E/4L65-E/4L80-E, NV3500, Chevy, GMC, Each

Part Number: HAY-97-1H32F

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

TCI Internal Wiring Harnesses 276610

Internal Wiring Harness, Upgrade, GM, Style Harness, Each

Part Number: TCI-276610

Not Yet Reviewed

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Sachs Stock Replacement Throwout Bearings SB60129

Throwout Bearing, Replacement, Standard Style, Chevrolet, GMC, Each

Part Number: SXR-SB60129

Not Yet Reviewed

Estimated Ship Date: Feb 27, 2026 if ordered today

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Estimated Ship Date: Feb 27, 2026 if ordered today

Zoom MU Series Clutches MU5997-1

Clutch Kits, MU Series Clutches, 1.125 in. - 10-spline, 11.688 in. Diameter Organic Disc, Pressure Plate, Chevrolet, GMC, 6.0L LS, Kit

Part Number: ZZZ-MU5997-1

Not Yet Reviewed

Estimated Ship Date: May 4, 2026 if ordered today

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Estimated Ship Date: May 4, 2026 if ordered today

Hays Twister 3/4 Race 3,600-4,200 Stall Torque Converter 97-1H36Q

Hays Twister 3/4 Race Torque Converter 1998- UP GM, 4L60E/4L65E, 3600-4200 RPM stall

Part Number: HAY-97-1H36Q

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

WIX Filters Transmission Filters 58608

Transmission Filter, Replacement, Each

Part Number: WIX-58608

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Standard Motor Automatic Transmission Control Solenoids TCS17

Transmission Control Solenoid, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: SMP-TCS17

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Pioneer Flywheel Shims FWS-28

FLYWHEEL SHIM .050

Part Number: PIO-FWS-28

1.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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USA Standard Gear Manual Transmission Bearing Kits ZMBK235DWS

Transmission Bearing and Seal, Getrag-5 Speed Transmission Bearing/Seal Kit w/Synchro Rings, 5-Speed Manual Trans 0.9 Inch Input/Output Bearings

Part Number: SPZ-79068

Not Yet Reviewed

Estimated Ship Date: Feb 20, 2026 if ordered today

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Estimated Ship Date: Feb 20, 2026 if ordered today

PRW Flexplate Fasteners 1001284

Flexplate Bolts, 11mm x 1.50 in., 1.075 in. UHL, 12-point, for Transmission Swap, GM, LS with TH350/TH400/700R4 with Crank Flange Adapter, Set of 6

Part Number: PQX-1001284

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Silver Sport Manual Transmission Bellhousings BHG-12005A

Bellhousing Chevy LS Kit

Part Number: IST-BHG-12005A

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 12, 2026 if ordered today

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Estimated Ship Date: Mar 12, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

Summit Racing™ Manual Transmission Bellhousings SUM-700172

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Dura-Bond Automatic Transmission Bushings 34005F

Transmission Bushing, Actual OD - 2.0245; Length - 0.995; Max Wall - 0.0673

Part Number: DUR-34005F

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