Original GM Spark Plugs
What Do Spark Plugs Do?
They ignite the mixture of oxygen and fuel a vehicle's engine needs to burn for power.
How Do Spark Plugs Work?
The process, called spark ignition, starts when the key turns in the ignition lock cylinder and the ignition switch trips. The car battery, plus other ignition parts, like a starter motor, a starter solenoid, and an ignition coil, then start to generate electricity. The charge travels to the plugs' leads, which capture it, and combustion occurs. The engine's pistons then begin to pump, and its crankshaft turns. The vehicle then starts and, thanks to the alternator, remains running.
In short, no engine could start at all, let alone run, without spark plugs.
What are the Symptoms of Spark Plugs Going Bad?
- Corrosion
- Widening leads
- Inferior conductivity
- Hard starts
- A marked drop in fuel economy
- Engine misfires
- Idling roughly
- Problems speeding up
- Physical deterioration and breakage
When Should Spark Plugs Be Changed?
If you see any of the aforementioned signs, or if an engine inspection's results suggest you need to replace them. Otherwise, be sure to make the change before they surpass the kilometrage limits specified in your owner's manual.
Why Buy Genuine OEM Spark Plugs?
They're built to fit a brand's cars , trucks, and SUVs specifically. In other words, they'll be compatible with your model, guaranteed.
Where Can I Order Replacement Spark Plugs?
Online, right here at our auto parts store. They'll come straight from your OEM, too. We carry the copper, platinum, and iridium kind, both regular and extended-life. Just browse our inventory by make, model, and year to find those that fit what you drive. Buy now, and we'll ship on the double, directly to your address.
- Buick:
- Envision,
- LaCrosse
- Cadillac:
- ATS
- Chevrolet:
- Blazer,
- Colorado,
- 5 more
- Buick:
- Century,
- LaCrosse,
- LeSabre,
- Lucerne,
- Park Avenue,
- 32 more
- Buick:
- Encore GX
- Cadillac:
- CT4
- Chevrolet:
- Silverado 1500,
- Trailblazer
- GMC:
- Sierra 1500
- Buick:
- Century,
- Skylark
- Chevrolet:
- Astro,
- Blazer,
- C/K Pickup,
- 65 more
- Buick:
- Skyhawk,
- Skylark
- Cadillac:
- Cimarron
- Chevrolet:
- Camaro,
- Cavalier,
- 15 more
- Buick:
- Commercial Chassis,
- Roadmaster
- Cadillac:
- Brougham
- Chevrolet:
- Camaro,
- Caprice,
- 10 more
- Buick:
- Skylark
- Chevrolet:
- Beretta
- Oldsmobile:
- Achieva,
- Cutlass Calais,
- Cutlass Supreme
- 2 more
- GMC:
- Syclone,
- Typhoon
- Chevrolet:
- C/K Pickup,
- G20,
- G30,
- P20,
- P30,
- 27 more
- Buick:
- LaCrosse,
- Regal,
- Verano
- Chevrolet:
- Captiva Sport,
- Cobalt,
- 7 more
- Buick:
- Cascada,
- Encore,
- Encore GX
- Chevrolet:
- Cruze,
- Equinox,
- 4 more
- Buick:
- Lucerne
- Cadillac:
- DeVille,
- DTS,
- Eldorado,
- Seville,
- 5 more
- Chevrolet:
- Avalanche 1500,
- Express 1500,
- Express 2500,
- Express 3500
- GMC:
- Savana 1500,
- 2 more
- Saturn:
- LW300
- Buick:
- Skyhawk
- Chevrolet:
- Camaro,
- Express 1500,
- Express 2500
- GMC:
- Savana 1500,
- Savana 2500
- Buick:
- Envision
- Cadillac:
- CT4,
- CT5,
- CT6,
- XT4,
- 4 more
- Cadillac:
- Escalade,
- Escalade ESV
- Chevrolet:
- Camaro,
- Corvette,
- Express 2500,
- 15 more
- Buick:
- Enclave
- GMC:
- Acadia
- Saturn:
- Outlook
- Buick:
- Envision,
- Regal,
- Regal Sportback,
- Regal TourX
- Cadillac:
- ATS,
- 7 more
- Buick:
- LaCrosse,
- Rainier
- Cadillac:
- CTS,
- Escalade,
- Escalade ESV,
- 62 more
- Buick:
- Century,
- LeSabre,
- Park Avenue,
- Regal,
- Riviera,
- 12 more
- Chevrolet:
- Nova,
- S10,
- Spectrum,
- Sprint
- GMC:
- S15
- 1 more
- Chevrolet:
- Express 1500,
- Express 2500,
- Express 3500
- GMC:
- Savana 1500,
- Savana 2500,
- 1 more
- Buick:
- Skylark
- Oldsmobile:
- Achieva
- Pontiac:
- Grand Am,
- Sunfire
- Chevrolet:
- C2500,
- C3500,
- Express 3500,
- K2500 Pickup,
- K3500 Pickup,
- 18 more
- Chevrolet:
- Avalanche 2500,
- Express 3500,
- Silverado 2500 HD,
- Silverado 2500 HD Classic,
- Silverado 3500,
- 8 more
- Buick:
- LaCrosse,
- Regal Sportback
- Cadillac:
- ATS,
- CT6,
- CTS,
- 7 more
- Cadillac:
- Escalade,
- Escalade ESV,
- Escalade EXT
- Chevrolet:
- Avalanche,
- Avalanche 1500,
- 29 more
- Buick:
- Enclave,
- LaCrosse
- Cadillac:
- ATS,
- CTS,
- SRX,
- 18 more
- Buick:
- Rainier
- Chevrolet:
- Cavalier,
- Classic,
- Cobalt,
- Colorado,
- 21 more
- Buick:
- Electra,
- LeSabre,
- Regal,
- Riviera
- Cadillac:
- Brougham,
- 9 more
- Buick:
- Enclave,
- LaCrosse,
- Rendezvous
- Cadillac:
- CTS,
- SRX,
- 11 more
- Chevrolet:
- Cavalier,
- S10
- GMC:
- S15,
- Sonoma
- Pontiac:
- Sunfire
- Chevrolet:
- Astro,
- Blazer,
- C2500,
- C3500,
- Express 1500,
- 20 more
- Cadillac:
- Escalade,
- Escalade ESV,
- Escalade EXT
- Chevrolet:
- Avalanche 1500,
- Silverado 1500,
- 24 more
- Saturn:
- SC1,
- SC2,
- SL,
- SL1,
- SL2,
- 2 more
- Buick:
- Century,
- Regal,
- Skyhawk
- Cadillac:
- Cimarron
- Chevrolet:
- Beretta,
- 11 more
- Pontiac:
- Firebird,
- Grand Prix
- Chevrolet:
- Beretta,
- Corvette,
- Metro,
- Tracker
- Oldsmobile:
- Achieva
- 1 more
- Buick:
- Century,
- Electra,
- LeSabre,
- Park Avenue,
- Reatta,
- 12 more
- Buick:
- Rainier
- Chevrolet:
- Express 1500,
- Express 2500,
- Express 3500,
- SSR,
- 6 more
- Chevrolet:
- Equinox
- Pontiac:
- Torrent
- Chevrolet:
- Equinox
- Pontiac:
- Torrent
- Buick:
- Regal,
- Riviera
- Chevrolet:
- Camaro,
- Monte Carlo
- Pontiac:
- Firebird
- Buick:
- Park Avenue,
- Riviera
- Chevrolet:
- Camaro
- Oldsmobile:
- 88,
- 98
- 2 more
- Chevrolet:
- Cavalier,
- Classic,
- Cobalt,
- HHR,
- Malibu
- 8 more
- Cadillac:
- CTS
- Chevrolet:
- Camaro,
- Corvette
- Buick:
- Century,
- Regal,
- Skylark
- Chevrolet:
- Beretta,
- Corsica,
- 8 more
- Buick:
- LaCrosse,
- Rendezvous
- Cadillac:
- CTS,
- SRX,
- STS
- Cadillac:
- Brougham
- Chevrolet:
- Camaro
- Pontiac:
- Firebird
- Chevrolet:
- Caprice
- Chevrolet:
- Aveo,
- Aveo5
- Chevrolet:
- Equinox
- Pontiac:
- Torrent
- Saturn:
- Astra
- Cadillac:
- CTS
- Chevrolet:
- Camaro,
- Corvette
- Cadillac:
- ATS,
- CT4,
- CTS,
- XTS
- Cadillac:
- CTS
- Chevrolet:
- Camaro
- Cadillac:
- CTS,
- XTS
- Buick:
- Encore
- Chevrolet:
- Cruze,
- Cruze Limited,
- Sonic,
- Trax
- Buick:
- Lucerne,
- Terraza
- Chevrolet:
- Impala,
- Malibu,
- Monte Carlo,
- 6 more
- Cadillac:
- CTS
- Chevrolet:
- Camaro
- Buick:
- Century,
- Electra,
- LeSabre,
- Riviera,
- Skylark,
- 11 more
- Buick:
- Skyhawk
- Chevrolet:
- Metro,
- Sprint,
- Tracker
- Pontiac:
- Grand Am,
- 2 more
- Chevrolet:
- Aveo,
- Aveo5
- Pontiac:
- G3
- Chevrolet:
- Spark,
- Spark EV
- Chevrolet:
- Prizm
- Pontiac:
- Vibe
- Chevrolet:
- Corvette
- Chevrolet:
- Cobalt
- Saturn:
- Ion
- Cadillac:
- ELR
- Chevrolet:
- Cruze,
- Cruze Limited,
- Sonic,
- Volt
- Pontiac:
- Vibe
- Cadillac:
- Escalade
- Chevrolet:
- C2500,
- C3500,
- Express 1500,
- Express 2500,
- 12 more
- Chevrolet:
- Caprice
- Chevrolet:
- Corvette
- Chevrolet:
- Corvette
- Pontiac:
- Grand Am
- Buick:
- Century
- Chevrolet:
- Corvette
- Pontiac:
- Grand Prix
- Saturn:
- SC,
- SC1,
- SC2,
- SL,
- SL1,
- 3 more
- Buick:
- Commercial Chassis
- Cadillac:
- Fleetwood
- Chevrolet:
- Caprice,
- Commercial Chassis
- Chevrolet:
- Camaro
- Pontiac:
- Firebird
- Buick:
- Century,
- Rendezvous
- Chevrolet:
- Impala,
- Lumina,
- Malibu,
- 9 more
- Chevrolet:
- Camaro
- Pontiac:
- Firebird
- Chevrolet:
- C/K Pickup,
- G10,
- G20,
- G30,
- P20,
- 23 more
- Buick:
- Roadmaster
- Cadillac:
- Fleetwood
- Chevrolet:
- Caprice,
- Impala
- Buick:
- Roadmaster
- Cadillac:
- Fleetwood
- Chevrolet:
- Caprice,
- Impala
- Cadillac:
- DeVille,
- Eldorado
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