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

Standard Motor Coolant Temperature Sensors TX89T

Sensor, Coolant Temperature, Brass, Natural, Chevrolet, Pontiac. Buick, Saturn, Each

Part Number: SMP-TX89T

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Standard Motor Wiring Connectors HP3840

Wiring Pigtails, 2-pin, Male, Black, for use on Acura®, Buick, Cadillac, Chevy, Chrysler, Ford, GMC, Lincoln, Mercury, Mitsubishi, Olds, Pontiac, Each

Part Number: SMP-HP3840

5.0 out of 5 stars ( 2 )

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Standard Motor Glow Plug Controllers RY-1731

Glow Plug Controller, Duramax Diesel V8, 6.6L/403, Each

Part Number: SMP-RY-1731

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

ACDelco ABS Wheel Speed Sensors 19300584

Sensor, ABS Speed Sensor, Stock Replacement, Front, Chevrolet, GMC, Truck, Each

Part Number: ADO-19300584

2.0 out of 5 stars ( 1 )

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Taylor 409 Pro Race Spiro-Wound 10.4mm Spark Plug Wires 79005

Spark Plug Wires, 409 Pro Race, Spiro-Wound, 10.4mm, Black, Straight Boots, Cadillac/Chevy/GMC, 5.3/6.0L, V8

Part Number: TAY-79005

4.0 out of 5 stars ( 1 )

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MechMan Elite Series Billet Alternators B8206400RD

MechMan Elite Series Billet Alternators B8206400RD

Alternators and Generators, Elite Series Billet Alternators, 12 V, 400 amps, Red, Anodized, Buick, Cadillac, Chevrolet, GMC, Hummer, Each

Part Number: MEH-B8206400RD

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

Moroso Mag-Tune Spark Plug Wires 9643M

Spark Plug Wires, Mag-Tune, Assembled, Spiral Core, Black, 7.0mm, Chevy, GMC, Small Block LS, Set

Part Number: MOR-9643M

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Moroso Ultra 40 Unsleeved Custom-Fit Wire Sets 73681

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

Part Number: MOR-73681

5.0 out of 5 stars ( 1 )

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Taylor ThunderVolt 8.2mm Spark Plug Wire Sets 84644

Spark Plug Wires, ThunderVolt, Spiro-Wound, 8.2mm, Blue, Cadillac, Chevy, Pontiac, LS1/LS6, Set

Part Number: TAY-84644

5.0 out of 5 stars ( 4 )

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Edge Juice Modules with Attitude CTS3 Programmers 21501-3

Computer Programmer, Juice Module with Attitude CTS3 Programmer, Chevy, GMC, 6.6L Diesel, LLY, Kit

Part Number: EGE-21501-3

Not Yet Reviewed

Estimated Ship Date: Feb 16, 2026 if ordered today

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Estimated Ship Date: Feb 16, 2026 if ordered today

Fleece Performance Wiring Pigtails FPE-HAR-MU-PT-5

Wiring Pigtail, Transmission Speed, Coolant Temp, Brake Fluid Level, Washer Fluid Level, Chevy, GMC, Dodge, Ram, Each

Part Number: FLE-S0429

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Powermaster Street Alternators 582473

Alternator, Street, 165 Amps, Black Powdercoated Finish, Under Drive Serpentine Pulley, Cadillac, Chevy, GMC, Each

Part Number: PWM-582473

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Dorman Battery Boxes and Trays 00085

Tray, Battery, Steel, Rubber, Cadillac, Chevrolet, GMC, Each

Part Number: RNB-00085

5.0 out of 5 stars ( 4 )

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Dorman Battery Boxes and Trays 00097

Tray, Battery, Steel, Black, Cadillac, Chevrolet, GMC, Each

Part Number: RNB-00097

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Taylor ThunderVolt 8.2mm Spark Plug Wire Sets 86246

Wire, ThunderVolt, Spiral Core, 8.2mm, Red, Coil Pack, Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, Saab

Part Number: TAY-86246

4.67 out of 5 stars ( 3 )

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Granatelli Motor Sports GM High Performance Coil Near Plug Wire Sets 28-1545-CBBL

Spark Plug Wire Sets, Assembled, Solid Core, Black Ceramic Boots, Blue, 8.00mm Diameter, 10 in. Length, Cadillac, Chevrolet, GMC, Hummer, V8, Set

Part Number: GRN-28-1545-CBBL

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

MechMan Indicator Light Harnesses H104

H104 Indicator light harness for 1996-2004 GM Truck

Part Number: MEH-H104

Not Yet Reviewed

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PerTronix Flame-Thrower Ignition Coils 30818

Ignition Coil, Flame-Thrower, Coil Pack, Epoxy Construction, Black, Square, Chevy, GMC, Set of 8

Part Number: PNX-30818

5.0 out of 5 stars ( 1 )

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Taylor Spiro-Pro Spark Plug Wire Sets 74244

Spark Plug Wires, Spiro-Pro, 8mm, Red, Straight Boots, Chevy, Pontiac, LS1/LS6, Set

Part Number: TAY-74244

5.0 out of 5 stars ( 3 )

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ACDelco GM Genuine Parts Oxygen Sensors 19209812

Oxygen Sensor, 4-wire, Chevy, GMC, Each

Part Number: ADO-213-1149

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E3 Spark Plugs E3.44

Spark Plug, E3, Tapered Seat, 14mm Thread, 0.708 in. Reach, Projected Tip, Resistor, Each

Part Number: ETP-E3-44

4.0 out of 5 stars ( 3 )

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Dorman Throttle Body Modules 599-959

THROTTLE CTRL MODULE

Part Number: RNB-599-959

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

ACDelco Replacement Switches 15143597

Electrical Switches, ACDelco Replacement Switches, Fog Lamp and Cargo Lamp Switch, Cadillac, Chevy, GMC, Each

Part Number: ADO-D7096C

5.0 out of 5 stars ( 1 )

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Beck/Arnley Engine Coolant Temperature Sensors 158-0536

Coolant Temperature Sensor, Each

Part Number: BCK-158-0536

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ACDelco Wiring Connectors 13584094

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

Part Number: ADO-PT2712

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