Availability
2003 GMC SIERRA 1500 HD Ignitions & Electrical
Showing In Stock Items. Show All 65 Items.
Spark Plug, IZTR5B11, Laser Iridium, 14mm Thread, 0.708 in. Reach, Tapered Seat, 5/8 in. Hex, Each
Part Number: NGK-1465
Estimated Ship Date: Today
Estimated Ship Date: Today
Spark Plugs, Ruthenium HX, Platinum, Resistor, 14mm Thread Size, 0.708 in. Reach, Tapered Seat, Each
Part Number: NGK-94567
Estimated Ship Date: Today
Estimated Ship Date: Today
Starter Bolts, Steel, Zinc, Long Bolts, Chevrolet, LS, Pair
Part Number: MRG-60941MRG
Estimated Ship Date: Today
Estimated Ship Date: Today
Estimated Ship Date: Today
Throttle Body Replacement Components, LS Idle Air Control Valve and Throttle Position Sensor Bolt Kits, Mounting Hardware, Chevrolet, GMC, LS, Kit
Part Number: ICB-551722
Estimated Ship Date: Today
Estimated Ship Date: Today
Relay, Multi Purpose, High Power, General, 8386, Each
Part Number: ADO-13500114
Estimated Ship Date: Today
Estimated Ship Date: Today
Estimated Ship Date: Today
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
Estimated Ship Date: Today
Estimated Ship Date: Today
Ground Strap, Body Electrical, 17.490 in. Length, Cadillac, Chevrolet, GMC, Truck, Each
Part Number: ADO-15179982
Estimated Ship Date: Today
Estimated Ship Date: Today
Wiring Harness Connector, Replacement, Multipurpose, Male, 2-pin, Gray, Each
Part Number: ADO-PT209
Estimated Ship Date: Today
Estimated Ship Date: Today
Sensor, Engine Crankshaft Position Sensor, Replacement, Each
Part Number: HLN-2CRK0065
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
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
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Sensor, Coolant Temperature, Brass, Natural, Chevrolet, Pontiac. Buick, Saturn, Each
Part Number: SMP-TX89T
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
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
Estimated Ship Date: Today
Estimated Ship Date: Today
Wiring Pigtails, Replacement, Female Wire Connector Type, Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, Saab, Each
Part Number: ADO-PT308
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Switch - Misc.
Part Number: SMP-FLS14
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Wiring Connectors, Mass Air Flow Sensor Connector, Male, 10 in. Length, For Use on Acura®, Avanti, Buick,Chevy, Each
Part Number: SMP-HP4240
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Wiring Harness Connector, Replacement, OEM Type, Female, 2-pin, White, Each
Part Number: ADO-PT249
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Wiring Pigtails, Wiring Connectors, Female, Buick, Cadillac, Chevy, GMC, Hummer, Oldsmobile, Pontiac, Saab, Saturn, Each
Part Number: RNB-645-595
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Sensor, ABS Wheel Speed Sensor, Replacement, Each
Part Number: HLN-2ABS1547
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Estimated Ship Date: Today
Automatic Headlight Sensor
Part Number: SMP-EFL166
Not Yet Reviewed
Estimated Ship Date: Feb 23, 2026 if ordered today
Estimated Ship Date: Feb 23, 2026 if ordered today
Sensor, Vehicle Speed Sensor, Replacement, Each
Part Number: HLN-2VSS0043
Not Yet Reviewed
Estimated Ship Date: Feb 17, 2026 if ordered today
Estimated Ship Date: Feb 17, 2026 if ordered today
KEY ASM-DR LK & IGN LK (UNCODED)
Part Number: NAL-23372321
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Stoplight Switch
Part Number: SMP-SLS303T
Not Yet Reviewed
Estimated Ship Date: Feb 23, 2026 if ordered today
Estimated Ship Date: Feb 23, 2026 if ordered today
Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
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Circle Track
Street Rod
Powersports
Paint & Body
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