2003 GMC SIERRA 1500 HD Parts & Accessories

VEGE Remanufactured Automatic Transmissions 1659A-82

Automatic Transmission, Remanufactured, 4L80E, Four Gears, Stock Aluminum Pan Style, Torque Converter, Cadillac, Chevrolet, GMC, V8, Each

Part Number: VRE-1659A-82

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

Motive Gear Performance Ring and Pinion Sets G885488 GM 8.5/8.6 in. 4.88 Gears

Gear, Ring and Pinion, 4.88:1 Ratio, GM, 8.5/8.6 in., Set

Part Number: MGR-G885488

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Pacer Performance Hi-Five Cab Lights 20-253

Cab Roof Lights, Chevy/GMC, Amber Lens, Amber LED Bulbs, Set of 3

Part Number: PPP-20-253

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Delphi Fuel Pump Module Assemblies FG0407

Fuel Pumps, Fuel Pump Module Assemblies, Electric In-tank, 12 V, Chevy, GMC, Kit

Part Number: DFP-FG0407

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Dorman Universal Threaded U-Bolt Kits 929-723

U-Bolts, Leaf Springs, 9.625 in. Length, 2.563 in. Width, 0.562 in. Diameter, Black, Steel, Cadillac, Chevy, GMC, Pair

Part Number: RNB-929-723

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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DiabloSport Trinity 2 EX Performance Programmers 9200

Computer Programmer, Trinity 2 EX Performance, Buick, Cadillac, Chevy, GMC, Hummer, Pontiac, Each

Part Number: DBL-9200

Not Yet Reviewed

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ACDelco Gold Brake Master Cylinders 19288627

Brake Master Cylinders, Professional, 2 Holes Mounting, Reservoir, Chevrolet, GMC, Each

Part Number: ADO-18M2426

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Mar 9, 2026 if ordered today

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Estimated Ship Date: Mar 9, 2026 if ordered today

Mr. Gasket LS Timing Cover Alignment Tools LSTC1

Timing Cover Installation Tool, Crankshaft Seal Position, Chevy, Each

Part Number: MRG-LSTC1

5.0 out of 5 stars ( 12 )

Estimated Ship Date: Today

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Dorman Valve Covers 264-965

Valve Cover, Left Side, Centerbolt Mounting, Cast Aluminum, Natural, Chevy, GMC, Pontiac, Small Block LS, Each

Part Number: RNB-264-965

4.89 out of 5 stars ( 9 )

Estimated Ship Date: Today

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Bilstein Shock Reservoir Mounting Brackets 11-176015

Bilstein Shock Reservoir Mounting Brackets 11-176015

Shock Reservoir Mounting Bracket, Aluminum, Black Anodized, Each

Part Number: BSN-11-176015

4.43 out of 5 stars ( 14 )

Estimated Ship Date: Today

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VEGE Remanufactured 2,200 Stall Torque Converter TQBU54

Torque Converter, GM 4L80E 98-09 Convtr

Part Number: CCV-TQBU54

Not Yet Reviewed

Estimated Ship Date: Today

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Dorman Fuel Tank Crossmembers 926-987

Rear Crossmember, Front Fuel Tank Crossmember, Includes Crossmember, Bracket, Mounting Hardware, Steel, Black, Chevy, GMC, Each

Part Number: RNB-926-987

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Go Rhino Bed Bars 9009560DSB

Roll Bar, Truck Bed Mount, Steel, Black Powdercoated, Chevy, Dodge, Ford, GMC, Ram, Toyota, Kit

Part Number: GRH-9009560DSB

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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MSD Blaster OEM Replacement Coils 82638

Ignition Coil, Blaster OEM Replacement, Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, 4.8, 5.3, 6.0L, Set of 8

Part Number: MSD-82638

4.82 out of 5 stars ( 11 )

Estimated Ship Date: Today

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King SI-Series Main Bearings MB5293SI 001

Main Bearings, SI-Series, 0.001 in. Crankshaft Undersize, Bi-metal, Grooved, Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Pontiac, Saab, Set of 5

Part Number: KGB-MB5293SI001

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Today

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MSD Blaster OEM Replacement Coils 826383

Ignition Coil, Blaster OEM Replacement, Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, 4.8, 5.3, 6.0L, Set of 8

Part Number: MSD-826383

Not Yet Reviewed

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ACDelco GM Genuine Parts Transmission Pan Gaskets 08677743

Transmission Pan Gaskets, GM OE, Chevrolet, GMC, Each

Part Number: ADO-8677743

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Prothane Body Mount Bushings 7-148-BL

Body Bushings, Cab Mount and Radiator Support, for Round Mounting Hole, 52mm Bore, and 21mm Bolt Hole, Polyurethane, Black, Kit

Part Number: PTP-7-148-BL

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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McGard Lug Nuts 64024

Lug Nuts, Conical Seat, 14mm x 1.50 RH, 1.945" Long, 22mm Hex, Closed End, Black, Steel, Set of 4

Part Number: MCG-64024

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Hastings Piston Ring Sets 2M4860010

Piston Rings, Plasma-moly, 4.010 in. Bore, 1.5mm, 1.5mm, 3.0mm Thickness, 8-Cylinder, Set

Part Number: HSN-2M4860010

Not Yet Reviewed

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MaxTrac Suspension Lowering Springs 250920-8

Lowering Springs, Front, Gray Powdercoated, 2 in. Drop, Chevy, GMC, V8, Pair

Part Number: MXT-250920-8

Not Yet Reviewed

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Yukon Gear & Axle 14 Bolt GM 9.5 Inch Differential Cover YP C5-GM9.5

Differential Cover, 14-bolt, Steel, Natural, GM 9.5 in., Each

Part Number: YGA-32333

4.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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King HP-Series Main Bearings MB5013HP 010

Main Bearings, 1/2 Groove, .010 in. Crankshaft Undersize, Alecular Silicon, Chevy, Small Block, LS, Set of 5

Part Number: KGB-MB5013HP010

Not Yet Reviewed

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Holley LS Valley Covers 241-369

Lifter Valley Plates, LS Valley, Billet Aluminum, Trussed with Oil Fill, Black Anodized, 10-Bolt Pattern, Chevy, LS, 5.7L, Each

Part Number: HLY-241-369

Not Yet Reviewed

Estimated Ship Date: Feb 23, 2026 if ordered today

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Estimated Ship Date: Feb 23, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

ICT Billet LS Lifter Valley Covers 551646

4 out of 5 stars ( 8 )

Estimated Ship Date: Today

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Fel-Pro Valve Stem Seals SS 71039

Valve Stem Seals, Rubber, GM, Saab, Set of 16

Part Number: FEL-SS71039

4.37 out of 5 stars ( 19 )

Estimated Ship Date: Today

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2003 GMC SIERRA 1500 HD Parts and Accessories