2004 GMC SIERRA 2500 HD Ignitions & Electrical - In Stock Filter Options - Vendor In Stock Filter Options

Standard Motor Throttle Position Sensors TH602

Throttle Position Sensor, Replacement, Buick, Chevrolet, GMC, Hummer, Isuzu, Workhorse, Workhorse Custom Chassis, Each

Part Number: SMP-TH602

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

Dorman Ignition Key Lock Cylinders 924-725

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

Part Number: RNB-924-725

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Standard Motor Wiring Connectors S-524

Wiring Pigtails, 2-pin, Male, Black, for use on Honda®, for Hyundai, for Nissan, BMW, Chevy, Chrysler, Dodge, Ford, GMC, Saab, Toyota, Volvo, Each

Part Number: SMP-S524

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Bosch Relays 0986AH0115

Relays, Buick, Cadillac, Chevrolet, GMC, Pontiac, Each

Part Number: BCH-0986AH0115

Not Yet Reviewed

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Dorman Wiring Connectors 84756

7-Wire GM Neutral Safety Switch Harness

Part Number: RNB-84756

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Feb 24, 2026 if ordered today

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Estimated Ship Date: Feb 24, 2026 if ordered today

Davis Unified Ignition SOS Ignition Coil Packs 65150

Ignition Coil Pack, SOS, Round, Epoxy Filled, Black, 40,000 V, Set of 8

Part Number: DUI-65150

5.0 out of 5 stars ( 2 )

Estimated Ship Date: May 4, 2026 if ordered today

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Estimated Ship Date: May 4, 2026 if ordered today

Davis Unified Ignition SOS Ignition Coil Packs 65350

Ignition Coil Pack, SOS, Triangular, Epoxy Filled, Black, 40,000 V, Set of 8

Part Number: DUI-65350

3.0 out of 5 stars ( 1 )

Estimated Ship Date: May 4, 2026 if ordered today

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Estimated Ship Date: May 4, 2026 if ordered today

ACDelco Wiring Connectors 15306071

Wiring Pigtail, Alternator, Female, 1-pin, Each

Part Number: ADO-PT1235

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Fleece Performance Wiring Pigtails FPE-HAR-DMAX-CPS-0416

Wire Connectors, Crankshaft Position Sensor Pigtail, 6 in., 3-pin, Female, with Heat Sealable Butt-style Connectors, Duramax, Chevy, GMC, Each

Part Number: FLE-S0482

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Eddie Motorsports Ball Milled Billet Coil Covers MS109-04CL

Coil Covers, Aluminum, Clear Powdercoated, Chevy, LS, With Cutout, Pair

Part Number: EMS-MS109-04CL

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Moroso Ultra 40 Unsleeved Custom-Fit Wire Sets 73660

Spark Plug Wires, Ultra 40, Assembled, Spiral Core, 8.65mm, Blue, Straight, Chevy, Pontiac, 5.7L LS, Set

Part Number: MOR-73660

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 2, 2026 if ordered today

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Estimated Ship Date: Mar 2, 2026 if ordered today

Moroso Ultra 40 Unsleeved Custom-Fit Wire Sets 73680

Spark Plug Wires, Ultra 40, Spiral Core, 8.65mm, Red, 180 Degree Boots, Chevy, Pontiac, 5.7L, Set

Part Number: MOR-73680

Not Yet Reviewed

Estimated Ship Date: Mar 2, 2026 if ordered today

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Estimated Ship Date: Mar 2, 2026 if ordered today

Dorman Wiring Connectors 645-785

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

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MechMan High-Output Racing Alternators 8237170B

170 Amp Racing Alternator

Part Number: MEH-8237170B

Not Yet Reviewed

Estimated Ship Date: Feb 19, 2026 if ordered today

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Estimated Ship Date: Feb 19, 2026 if ordered today

Eddie Motorsports Ball Milled Billet Coil Covers MS109-04M

Coil Covers, Aluminum, Machined, Chevy, LS, With Cutout, Pair

Part Number: EMS-MS109-04M

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Standard Motor Wiring Connectors S-656

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

Not Yet Reviewed

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Eddie Motorsports Smooth Billet Coil Covers MS109-02M

Ignition Coil Covers, Smooth, Billet Aluminum, Machined, Cadillac, Chevy, GMC, Pontiac, Small Block LS, Pair

Part Number: EMS-MS109-02M

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Eddie Motorsports Smooth Billet Coil Covers MS109-01M

Ignition Coil Covers, Smooth, Billet Aluminum, Machined, Cadillac, Chevy, GMC, Pontiac, Small Block LS, Pair

Part Number: EMS-MS109-01M

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Taylor ThunderVolt 8.2mm Spark Plug Wire Sets 82025

Spark Plug Wires, ThunderVolt, Spiro-Wound, 8.2mm, Black, Stock Boots, Chevy, GMC, 8.1L, Set

Part Number: TAY-82025

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Feb 20, 2026 if ordered today

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Estimated Ship Date: Feb 20, 2026 if ordered today

Taylor ThunderVolt 8.2mm Spark Plug Wire Sets 82625

Spark Plug Wires, ThunderVolt, Spiro-Wound, 8.2mm, Blue, Stock Boots, Chevy, GMC, 8.1L, Set

Part Number: TAY-82625

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

JET Stage 2 Computer Chips/Modules 20307S

JET Stage 2 Computer Chips/Modules 20307S

Computer Chip/Module, Stage 2, Chevy, GMC, Each

Part Number: JET-20307S

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

Champion Iridium Spark Plugs 9402

Spark Plug, Iridium, Tapered Seat, 14mm Thread, .708 in. Reach, Resistor, Each

Part Number: CPN-9402

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Taylor Spiro-Pro Spark Plug Wire Sets 72025

Spark Plug Wires, Spiro-Pro, 8mm, Black, Stock Boots, Chevy, GMC, 8.1L, V8, Set

Part Number: TAY-72025

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Feb 20, 2026 if ordered today

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Estimated Ship Date: Feb 20, 2026 if ordered today

Standard Motor Spark Plug Wire Sets 27874

Spark Plug Wires, Black Wire, Black Boots, Set

Part Number: SMP-27874

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Delphi Oxygen Sensors ES20008

Oxygen Sensor, 4-wire, Thread-in, Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, Saab, Each

Part Number: DFP-ES20008

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