2003 CADILLAC Ignitions & Electrical

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

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

Part Number: GRN-28-1545-CBB

Not Yet Reviewed

Estimated Ship Date: May 7, 2026 if ordered today

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Estimated Ship Date: May 7, 2026 if ordered today

Standard Motor Throttle Position Sensors TH149T

Throttle Position Sensor, Replacement, Buick, Cadillac, Chevy, GMC, Isuzu, Oldsmobile, Pontiac, Each

Part Number: SMP-TH149T

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SCT Livewire Vision Performance Monitors 5015PWD

Computer Programmer, SCT Livewire Vision Performance Monitor, Hand-held, Each

Part Number: SCL-5015PWD

Not Yet Reviewed

Estimated Ship Date: Apr 29, 2026 if ordered today

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Estimated Ship Date: Apr 29, 2026 if ordered today

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SCT X4 Power Flash Programmers 7015

4.25 out of 5 stars ( 75 )

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Granatelli Motor Sports GM High Performance Coil Near Plug Wire Sets 28-1629S

Granatelli Motor Sports GM High Performance Coil Near Plug Wire Sets 28-1629S

Spark Plug Wires, 8mm, Blue, Straight Boots, Chevy, 4.8/5.3/6.0L, Set

Part Number: GRN-28-1629S

4.44 out of 5 stars ( 9 )

Estimated Ship Date: May 7, 2026 if ordered today

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Estimated Ship Date: May 7, 2026 if ordered today

Diode Dynamics LED Flasher Relays DD4013

LM487 LED Turn Signal Flasher

Part Number: DOD-DD4013

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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ACDelco Air Temperature Sensors 22834330

Air Temperature Sensors, OE Replacement, Push To Connect, Cadillac, Chevrolet, GMC, Hummer, Each

Part Number: ADO-22834330

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Powermaster High-Amp Alternators 38237

Alternator, High-Amp, GM AD244 Case, 220 amps, 12 V, Serpentine Pulley, Offset Mount, Chrome, Internal Regulator, Chevrolet, GMC, Each

Part Number: PWM-38237

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Standard Motor MAP Sensors AS59T

MAP Sensor, OEM Replacement, Stock-Style, Each

Part Number: SMP-AS59T

Not Yet Reviewed

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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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Dorman Accelerator Pedal Position Sensors 699-101

Sensor, Accelerator Pedal Position, Cadillac, Chevy, GMC, Each

Part Number: RNB-699-101

Not Yet Reviewed

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Standard Motor Wiring Connectors S-551

Wiring Pigtails, 4-pin, Male, Black, for use on Acura®, for use on Honda®, Buick, Cadillac, Chevy, Chrysler, GMC, Isuzu, Jeep, Pontiac, Toyota, Each

Part Number: SMP-S551

5.0 out of 5 stars ( 2 )

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Standard Motor Wiring Connectors HP4240

Wiring Connector and Pigtail, 3-pin, Black, Male, 10 in. Length, for use on Acura®, for use on Honda®, for Hyundai, Buick, Chevy, Chrysler, GMC, Each

Part Number: SMP-HP4240

Not Yet Reviewed

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ACCEL Super Coils 140043

Ignition Coils, Coil Pack, Black/Yellow, Epoxy, Buick, Chevy, GMC, Hummer, Pontiac, LS2, LS3, LS7, Each

Part Number: ACC-140043

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Standard Motor Blower Motor Resistors RU-631

Resistor, Blower Motor, Buick, Cadillac, Chevy, GMC, Oldsmobile, Each

Part Number: SMP-RU631

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Granatelli Motor Sports Spark Plug Wires 28-1811S

Spark Plug Wires, 8mm, Blue, OEM Boots, Chevy, Small Block, LS2, Set

Part Number: GRN-28-1811S

5.0 out of 5 stars ( 14 )

Estimated Ship Date: May 12, 2026 if ordered today

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Estimated Ship Date: May 12, 2026 if ordered today

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Dragon Fire High Performance Series Spark Plug Wire Sets PWJ256

4.5 out of 5 stars ( 17 )

Estimated Ship Date: Today

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Standard Motor Wiring Connectors HP3850

Wiring Pigtails, 1-pin, Female, Black, for use on Acura®, for use on Honda®, Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, Olds, Pontiac, Saturn, Each

Part Number: SMP-HP3850

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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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Bosch Premium Universal Type Oxygen Sensors 15730

Oxygen Sensor, Universal Replacement, OE SmartLink™, Each

Part Number: BCH-15730

2.2 out of 5 stars ( 5 )

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Taylor Spiro-Pro Spark Plug Wire Sets 74044

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

Part Number: TAY-74044

Not Yet Reviewed

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Champion Iridium Spark Plugs 9404

Spark Plug, Iridium, Gasket Seat, 14mm Thread, .708 in. Reach, Projected Tip, Resistor, Each

Part Number: CPN-9404

5.0 out of 5 stars ( 5 )

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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

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ACDelco Replacement Wiring Harness Connectors 12101857

Wiring Harness Connector, Replacement, OEM Type, Female, 2-pin, White, Each

Part Number: ADO-PT249

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Spectra Premium Mass Airflow Sensors MA145

MAF, Mass Air Flow, Sensor, Each

Part Number: SGT-MA145

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

Granatelli Motor Sports Spark Plug Wires 28-1629HTBB

Spark Plug Wire Sets, Assembled, Solid Core, Black, 8.00mm Diameter, Cadillac, Chevrolet, GMC, Hummer, Pontiac, V8, Set

Part Number: GRN-28-1629HTBB

Not Yet Reviewed

Estimated Ship Date: May 7, 2026 if ordered today

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Estimated Ship Date: May 7, 2026 if ordered today

35 amps ACDelco Replacement Relay 13503102

Relays, Replacement, 12 V, 35 amps, 4 Blade Terminals, Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, Saab, Saturn, Each

Part Number: ADO-13503102

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