2003 CHEVROLET SILVERADO-2500-HD Electrical Wiring

Wire Connectors, Female Type, Gray, Buick, Cadillac, Chevrolet, Geo, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, Saab, Saturn, Suzuki, Each

Part Number: ADO-PT1798

Not Yet Reviewed

Estimated Ship Date: Today

Wire Connectors, Internal Harness and Viton® O-ring Seal for Allison LCT and GM 4T65-E Transmissions, 20-pin, Gray, 2-piece, Each

Part Number: FLE-S0483

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Wiring Pigtails, Replacement, Female Wire Connector Type, Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, Saab, Saturn, Suzuki, Each

Part Number: ADO-PT2782

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Estimated Ship Date: Today

Wiring Connector, GM 19368859, Cadillac, CTS, Gray Plastic, Each

Part Number: ADO-PT3846

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

Relay, SPDT/Form C Mini 280, 12 V, 20/40 amps, Single Pole, Male Spade Terminal Type with Resistor, Each

Part Number: HLA-H41410081

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Wiring Harness Connector, Replacement, OEM Type, Male, 2-pin, Black, Buick, Cadillac, Chevy, GMC, Pontiac, Saturn, Suzuki, Each

Part Number: ADO-PT2183

Not Yet Reviewed

Estimated Ship Date: Today

Neutral Safety and Backup Light Switch, T-Series, Cadillac, Chevrolet, GMC, Isuzu, Oldsmobile, Each

Part Number: SMP-NS85T

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Estimated Ship Date: Today

Headlight Switch, OEM Replacement, Chevy, GMC, Each

Part Number: RNB-901-142

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

Wiring Pigtails, Replacement, Female Wire Connector Type, Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, Saab, Saturn, Each

Part Number: ADO-PT1799

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Wiring Connectors and Pigtails, ACDelco Wiring Connectors, Pigtail Connector, 6 Wires, Multi-Purpose Connector, Each

Part Number: ADO-PT2712

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Estimated Ship Date: Today

Wiring Pigtails, 2-pin, Male, Black, for Hyundai, for Kia, Buick, Cadillac, Chevy, Dodge, Fiat, Genesis, GMC, Isuzu, Jeep, Saab, Saturn, Suzuki, Each

Part Number: SMP-S575

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Estimated Ship Date: Today

Ignition Switch Lock Cylinder, Buick, Cadillac, Chevrolet, GMC, Pontiac, Each

Part Number: RNB-924-725

Not Yet Reviewed

Estimated Ship Date: Today

Wiring Wire Extension, 18 in., MAP Sensor, Fuel Pressure Sensor, Chevy, GMC, Dodge, Ram, Each

Part Number: FLE-FPE-HARRPEXT

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Estimated Ship Date: Today

Wiring Pigtails, 3-pin, Male, Black, for use on Acura®, for Hyundai, Buick, Cadillac, Chevy, Dodge, GMC, Mitsubishi, Olds, Pontiac, Saab, Suzuki, Each

Part Number: SMP-S656

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Estimated Ship Date: Today

Ignition Switch, Replacement, 7 Way Female Connector, Plastic, Black, Buick, Cadillac, Chevy, GMC, Hummer, Oldsmobile, Pontiac, Each

Part Number: RNB-924-715

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

Wiring Pigtails, Male, for use on Honda®, AMC, Buick, Cadillac, Chevy, Dodge, Ford, GMC, Isuzu, Jeep, Lincoln, Olds, Pontiac, Saturn, Suzuki, Each

Part Number: SMP-HP4375

Not Yet Reviewed

Estimated Ship Date: Today

Rail Pressure Sensor Pigtail

Part Number: FLE-FPE-HAR-RPPT

Not Yet Reviewed

Estimated Ship Date: Today

LED Light Harness, Resistors, 921,194 Bulb Type, Kit

Part Number: PUT-240002

Not Yet Reviewed

Estimated Ship Date: Jan 22, 2026 if ordered today

• Drop Ship
• Special Order

Wiring Pigtails, Wiring Connectors, Buick, Cadillac, Chevy, GMC, Hummer, Oldsmobile, Pontiac, Saab, Saturn, Workhorse, Workhorse Custom Chassis, Each

Part Number: RNB-645-785

Not Yet Reviewed

Estimated Ship Date: Today

Switch, Power Door Lock, Plastic, Black, Chevy, GMC, Each

Part Number: SMP-DS2128

Not Yet Reviewed

Estimated Ship Date: Today

EM- Fog Lamp Switch Cn

Part Number: SMP-S-1399

Not Yet Reviewed

Estimated Ship Date: Jan 26, 2026 if ordered today

• Drop Ship
• Special Order

Glow Plug Harness Relay

Part Number: RNB-904-100

Not Yet Reviewed

Estimated Ship Date: Jan 27, 2026 if ordered today

• Drop Ship
• Special Order

Wiring Pigtail, Vehicle Speed Sensor, 2-pin, 700R4, 4L60E, 4L80E, Each

Part Number: ATP-JE15

Not Yet Reviewed

Estimated Ship Date: Jan 21, 2026 if ordered today

• Drop Ship
• Special Order

Wiring Harnesses, Fleece Performance, Outer Injector, External Connector Pigtail, 6 in. Long, Chevy, GMC, 2500, 3500, HD, 6.6L, Duramax, LB7, Each

Part Number: FLE-S0453

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Estimated Ship Date: Today

Wiring Pigtail, Barometric Pressure Sensor Connector, Cam Position Connector, Crankshaft Position Connector, MAP Sensor Connector, Chevy, GMC, Each

Part Number: FLE-S0444

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Estimated Ship Date: Today