2003 CHEVROLET SILVERADO 2500 HD Electrical Wiring

Automatic Transmission Wiring Harnesses, Replacement, AM General, Aston Martin, Bentley, Cadillac, Chevrolet, GMC, Hummer, Jaguar, Rolls-Royce, Each

Part Number: ATP-JE-22

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Wiring Pigtail, Benchtop Flash, OBD II, Chevy, Each

Part Number: PRF-60550

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

• Free Shipping

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: Monday 2/23/2026 if shipped by air

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

Part Number: ADO-PT3846

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Modules, LED, Each

Part Number: PPP-20-702

4.91 out of 5 stars ( 11 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Relay, 12 V, 10/20 amps, Single Pole, Spade Terminals, Each

Part Number: BCH-0332201107

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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: Monday 2/23/2026 if shipped by air

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: Monday 2/23/2026 if shipped by air

Relay, Multi Purpose, High Power, General, 8386, Each

Part Number: ADO-13500114

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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

Part Number: ADO-PT2782

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Wiring Pigtails, 3-pin, Male, Black, for use on Acura®, Chevy, Chrysler, Ford, GMC, International, Isuzu, Mitsubishi, Saab, Saturn, Suzuki, Each

Part Number: SMP-HP4440

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Power Window Switch, Master Switch, 8 Buttons, Black/Brown, Plastic, Illuminated, Cadillac, Chevy, GMC, Each

Part Number: RNB-901-075

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

• Free Shipping

Relays, Replacement, 35 amps, 12 V, 5 Blade Terminals, Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, Saab, Saturn, Suzuki, Each

Part Number: ADO-D1780C

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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

Part Number: SMP-NS85T

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Wiring Connectors, Coolant Temperature Sensor Extension, 36 in., 2 Pin, Each

Part Number: ICB-WECTS30-36

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Wiring Pigtail, Coolant Temperature Sensor, Each

Part Number: SMP-TX3A

4.6 out of 5 stars ( 5 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Ground Strap, Body Electrical, 17.490 in. Length, Cadillac, Chevrolet, GMC, Truck, Each

Part Number: ADO-15179982

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Turn Signal Switches, Multi-function, With Cruise Control, Labeled, Wiring Included, Plastic, GM, Each

Part Number: RNB-2330856

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Headlight Switch, OEM Replacement, Chevy, GMC, Each

Part Number: RNB-901-142

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Harness Adapter, Nexus Rebel LS, Cable Operated, TPS, IAC, Chevrolet, LS, Each

Part Number: HTH-HT-186504

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Electrical Switches, Gold Headlight Switches, Rotary, Plastic, Black, Lights Logo, Cadillac, Chevrolet, GMC, Hummer, Each

Part Number: ADO-19381535

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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: Monday 2/23/2026 if shipped by air

Wire Extension 24" LS Gen 3 MAP Manifold Absolute Pressure Sensor Connector

Part Number: ICB-WEMAP30-24

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

LS Gen 3 Truck TAC Module Pedal Position 72" Wire Extension

Part Number: ICB-WEAPP30-72

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Wire Extension LS Gen 3 White 3-Wire CKP Crankshaft Position Sensor Connector

Part Number: ICB-WECKP30-36

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air