GM Spark Plugs

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You probably don't spend a lot of time thinking about the factory spark plugs that came in your GM vehicle. That's good. It means they're doing their job. That's to produce the flash that ignites the air-and-fuel mix in your engine's combustion chamber. That's what allows your ignition to start the engine.

How Spark Plugs Work

The spark plugs create that flash, or spark, by firing an arc of electricity across the gap between two leads. If your GM runs on diesel, though, you don't have spark plugs. Instead, your engine is equipped with glow plugs. The heating element in your glowplug's tip ignites the fuel mist that is sprayed into the engine cylinder.

How Do You Know When Your Spark Plugs are Going Bad?

It's common for people to think that their alternator is at fault when their vehicle begins to suffer engine misfires and shutdowns. However, you should first check your spark plugs if you experience any of the following:

  • Unsteady idling
  • Your engine starts to misfire
  • You have trouble starting your vehicle
  • The Check Engine light triggers

The high-quality original spark plugs in your car, pickup, or SUV will eventually weaken in time. The gaps may have widened to the point where the spark is insufficient, or they've become corroded. Consult your owner's manual to determine how long you should expect your plugs to perform their best. You want to change them out before they reach that rated mileage, or else you're risking engine issues. When it is time to change your spark plugs, make sure to only choose the high-quality GM plugs that were designed for your model and its engine. You’ll find a great selection of them in stock at our online parts department. Buy today and save!

Spark Plug
Part Number: 12620540
Description: 2.4L. 3.0L. 2.0L turbocharged. More Info
Fits:
  • Buick:
    • LaCrosse,
    • Regal,
    • Verano
  • Chevrolet:
    • Captiva Sport,
    • Cobalt,
    • Equinox,
    • HHR,
    • Impala,
    • Malibu
  • GMC:
    • Terrain
  • Pontiac:
    • Solstice
  • Saturn:
    • Sky
  • 7 more
$13.10
$7.07
$13.10
$7.07
Spark Plug
Part Number: 12642722
Description: 6.2L, with supercharger. 6.2L supercharged. More Info
Fits:
  • Cadillac:
    • CTS
  • Chevrolet:
    • Camaro,
    • Corvette
$13.10
$7.07
$13.10
$7.07
Spark Plug
Part Number: 12674112
Description: 1.4L, acdelco # 1267411. More Info
Fits:
  • Chevrolet:
    • Cruze
$13.10
$7.07
$13.10
$7.07
Spark Plug
Part Number: 12680072
Description: Vendor #41-985. 4.8, 5.3 & 6.0L. Iridium. Vendor:acdelco. More Info
Fits:
  • Cadillac:
    • Escalade,
    • Escalade ESV,
    • Escalade EXT
  • Chevrolet:
    • Avalanche,
    • Avalanche 1500,
    • Camaro,
    • Caprice,
    • Colorado,
    • Corvette,
    • Express 1500,
    • Express 2500,
    • Express 3500,
    • LCF 3500,
    • Silverado 1500,
    • Silverado 2500 HD,
    • Silverado 3500 HD,
    • SS,
    • Suburban 1500,
    • Suburban 2500,
    • Suburban 3500 HD,
    • Tahoe
  • GMC:
    • Canyon,
    • Savana 1500,
    • Savana 2500,
    • Savana 3500,
    • Sierra 1500,
    • Sierra 2500 HD,
    • Sierra 3500 HD,
    • Yukon,
    • Yukon XL 1500,
    • Yukon XL 2500
  • Hummer:
    • H3,
    • H3T
  • Pontiac:
    • G8
  • 29 more
$13.10
$7.07
$13.10
$7.07
Spark Plug
Part Number: 12681656
Replaces: 55576026, 55585517
Description: 1.4L turbo. Without high output. 1.8L. More Info
Fits:
  • Buick:
    • Encore
  • Chevrolet:
    • Cruze,
    • Cruze Limited,
    • Sonic,
    • Trax
$13.10
$7.07
$13.10
$7.07
Spark Plug
Part Number: 12681657
Replaces: 12611882
Fits:
  • Buick:
    • Enclave
  • GMC:
    • Acadia
  • Saturn:
    • Outlook
$13.10
$7.07
$13.10
$7.07
Spark Plug
Part Number: 12681663
Replaces: 12625058
Fits:
  • Buick:
    • Rainier
  • Chevrolet:
    • Cavalier,
    • Classic,
    • Cobalt,
    • Colorado,
    • HHR,
    • Malibu,
    • Trailblazer,
    • Trailblazer EXT
  • GMC:
    • Canyon,
    • Envoy,
    • Envoy XL,
    • Envoy XUV
  • Hummer:
    • H3,
    • H3T
  • Oldsmobile:
    • Alero,
    • Bravada
  • Pontiac:
    • G5,
    • G6,
    • Grand Am,
    • Solstice,
    • Sunfire
  • Saturn:
    • Aura,
    • Ion,
    • L100,
    • L200,
    • L300,
    • LW200,
    • Sky,
    • Vue
  • 25 more
$13.10
$7.07
$13.10
$7.07
Spark Plug
Part Number: 25186682
Description: 2009-11. More Info
Fits:
  • Chevrolet:
    • Aveo,
    • Aveo5
  • Pontiac:
    • G3
$11.02
$5.95
$11.02
$5.95
Spark Plug
Part Number: 25190786
Replaces: 25181358
Fits:
  • Chevrolet:
    • Spark,
    • Spark EV
$13.10
$7.07
$13.10
$7.07
Spark Plug
Part Number: 55504354
Other Names: F (S)Spark Plug More Names
Description: 2.0L turbo. More Info
Fits:
  • Cadillac:
    • CT4,
    • CT5,
    • CT6,
    • XT4,
    • XT5
  • Chevrolet:
    • Blazer
  • GMC:
    • Acadia
  • 2 more
$14.74
$7.96
$14.74
$7.96
Spark Plug
Part Number: 19185432
Other Names: F (S)Spark Plug More Names
Description: 2.4L. 1.8l with ho. More Info
Fits:
  • Pontiac:
    • Vibe
$13.10
$7.07
$13.10
$7.07
Spark Plug
Part Number: 19208535
Fits:
  • Cadillac:
    • Allante,
    • DeVille,
    • Eldorado,
    • Seville
  • Oldsmobile:
    • Aurora
$11.02
$5.95
$11.02
$5.95
Spark Plug
Part Number: 19300383
Replaces: 19157988, 19302739, 19310655
Description: Optional. Vendor:acdelco. Vendor #R44T8. More Info
Fits:
  • Chevrolet:
    • C/K Pickup,
    • G20,
    • G30,
    • P20,
    • P30,
    • R20,
    • R30,
    • R3500,
    • Suburban C10,
    • Suburban C20,
    • Suburban K10,
    • Suburban K20,
    • V20,
    • V30,
    • V3500
  • GMC:
    • C1500 Pickup,
    • C2500 Pickup,
    • C3500 Pickup,
    • G2500,
    • G3500,
    • K1500 Pickup,
    • K2500 Pickup,
    • K3500 Pickup,
    • P2500,
    • P3500,
    • R2500 Pickup,
    • R3500 Pickup,
    • Suburban C1500,
    • Suburban C2500,
    • Suburban K2500,
    • V2500,
    • V3500
  • 27 more
$3.00
$1.62
$3.00
$1.62
Spark Plug
Part Number: 19300749
Replaces: 19157986
Fits:
  • Buick:
    • Century,
    • Electra,
    • LeSabre,
    • Riviera,
    • Skylark,
    • Somerset,
    • Somerset Regal
  • Oldsmobile:
    • 98,
    • Calais,
    • Cutlass Calais,
    • Cutlass Ciera,
    • Cutlass Cruiser,
    • Delta 88,
    • Toronado
  • Pontiac:
    • Bonneville,
    • Grand Am
  • 11 more
$3.22
$1.74
$3.22
$1.74
Spark Plug
Part Number: 19302733
Description: Vendor #R42XLS. Standard. Vendor:acdelco. More Info
Fits:
  • Buick:
    • Skyhawk
  • Chevrolet:
    • Metro,
    • Sprint,
    • Tracker
  • Pontiac:
    • Grand Am,
    • J2000 Sunbird,
    • Sunbird
  • 2 more
$3.00
$1.62
$3.00
$1.62
Spark Plug
Part Number: 19302741
Description: Optional. Vendor:acdelco. Vendor #cr43tsm. Standard. More Info
Fits:
  • Buick:
    • Commercial Chassis,
    • Roadmaster
  • Cadillac:
    • Brougham
  • Chevrolet:
    • Astro,
    • Blazer,
    • C1500,
    • C2500,
    • C3500,
    • Caprice,
    • G10,
    • G20,
    • G30,
    • K1500 Pickup,
    • K2500 Pickup,
    • K3500 Pickup,
    • P20,
    • P30,
    • R20,
    • R2500,
    • R30,
    • R3500,
    • S10,
    • S10 Blazer,
    • Suburban C1500,
    • Suburban C2500,
    • Suburban K1500,
    • Suburban K2500,
    • Suburban R10,
    • Suburban R1500,
    • Suburban R20,
    • Suburban R2500,
    • Suburban V10,
    • Suburban V1500,
    • Suburban V20,
    • Suburban V2500,
    • Tahoe,
    • V30,
    • V3500
  • GMC:
    • C1500 Pickup,
    • C2500 Pickup,
    • C3500 Pickup,
    • G1500,
    • G2500,
    • G3500,
    • Jimmy,
    • Jimmy S15,
    • K1500 Pickup,
    • K2500 Pickup,
    • K3500 Pickup,
    • P2500,
    • P3500,
    • R2500 Pickup,
    • R3500 Pickup,
    • S15,
    • Safari,
    • Sonoma,
    • Suburban C1500,
    • Suburban C2500,
    • Suburban K1500,
    • Suburban K2500,
    • Suburban R1500,
    • Suburban R2500,
    • V1500 Suburban,
    • V2500 Suburban,
    • V3500,
    • Yukon
  • Oldsmobile:
    • Bravada,
    • Custom Cruiser
  • 63 more
$3.22
$1.74
$3.22
$1.74
Spark Plug
Part Number: 19302744
Replaces: 5613957
Description: Optional. Exc.Police. Exc.Taxi. Standard. Vendor:acdelco. Vendor #CR43TS. Vendor #R45TS. More Info
Fits:
  • Buick:
    • Commercial Chassis,
    • Roadmaster
  • Cadillac:
    • Brougham
  • Chevrolet:
    • Camaro,
    • Caprice,
    • El Camino,
    • Impala,
    • Monte Carlo
  • GMC:
    • Caballero,
    • K1500 Pickup
  • Pontiac:
    • Bonneville,
    • Firebird,
    • Grand Prix,
    • Parisienne
  • 9 more
$3.22
$1.74
$3.22
$1.74
Spark Plug
Part Number: 19307138
Description: Exc.Police. Exc.Taxi. Rapid Fire. Vendor:acdelco. Vendor #CR43TS. More Info
Fits:
  • Chevrolet:
    • Caprice
$6.38
$3.45
$6.38
$3.45
Spark Plug
Part Number: 19307139
Replaces: 19250960
Description: Exc.Police. Exc.Taxi. Platinum. Vendor:acdelco. Vendor #CR43TS. More Info
Fits:
  • Chevrolet:
    • Caprice
$6.38
$3.45
$6.38
$3.45
Spark Plug
Part Number: 19308033
Replaces: 19238464, 19250971
Description: Rapid Fire. Vendor:acdelco. Vendor #14. 3.8L, without supercharged. 3.1L. More Info
Fits:
  • Buick:
    • Century
  • Chevrolet:
    • Corvette
  • Pontiac:
    • Grand Prix
$6.38
$3.45
$6.38
$3.45
Spark Plug
Part Number: 19355205
Replaces: 19301655
Fits:
  • Buick:
    • Century,
    • Electra,
    • LeSabre,
    • Park Avenue,
    • Reatta,
    • Regal,
    • Riviera,
    • Skylark
  • Cadillac:
    • Eldorado,
    • Seville
  • Oldsmobile:
    • 98,
    • Cutlass Calais,
    • Cutlass Ciera,
    • Cutlass Cruiser,
    • Delta 88,
    • Toronado
  • Pontiac:
    • Bonneville
  • 12 more
$3.22
$1.74
$3.22
$1.74
Spark Plug
Part Number: 19362247
Fits:
  • Buick:
    • Skylark
  • Chevrolet:
    • Beretta
  • Oldsmobile:
    • Achieva,
    • Cutlass Calais,
    • Cutlass Supreme
  • Pontiac:
    • Grand Am,
    • Grand Prix
  • 2 more
$3.22
$1.74
$3.22
$1.74
Spark Plug
Part Number: 12582002
Description: 3.5L. More Info
Fits:
  • Saturn:
    • Vue
$32.04
$17.30
$32.04
$17.30
Spark Plug
Part Number: 12622441
Description: 5.3 & 6.2L. 4.3L, 2018-19. 6.6L gas. 6.2L, without supercharger. More Info
Fits:
  • Cadillac:
    • Escalade,
    • Escalade ESV
  • Chevrolet:
    • Camaro,
    • Corvette,
    • Express 2500,
    • Express 3500,
    • Silverado 1500,
    • Silverado 1500 LD,
    • Silverado 2500 HD,
    • Silverado 3500 HD,
    • Suburban,
    • Tahoe
  • GMC:
    • Savana 2500,
    • Savana 3500,
    • Sierra 1500,
    • Sierra 1500 Limited,
    • Sierra 2500 HD,
    • Sierra 3500 HD,
    • Yukon,
    • Yukon XL
  • 15 more
$13.10
$7.07
$13.10
$7.07
Spark Plug
Part Number: 12662396
Description: Coupe, 3.6L with twin-turbo. More Info
Fits:
  • Cadillac:
    • ATS,
    • CTS,
    • XTS
$13.10
$7.07
$13.10
$7.07
Spark Plug
Part Number: 12664824
Other Names: F (S)Spark Plug More Names
Fits:
  • Chevrolet:
    • Corvette
$21.64
$11.69
$21.64
$11.69
Spark Plug
Part Number: 12680074
Replaces: 12627160
Description: Sedan, 2.5L, 2.0L turbo, 2.5L. More Info
Fits:
  • Buick:
    • Envision,
    • LaCrosse
  • Cadillac:
    • ATS
  • Chevrolet:
    • Blazer,
    • Colorado,
    • Impala,
    • Malibu,
    • Malibu Limited
  • GMC:
    • Acadia,
    • Canyon
  • 5 more
$13.10
$7.07
$13.10
$7.07
Spark Plug
Part Number: 12681655
Other Names: More Names
Replaces: 55564962, 55580961, 55585534
Description: 1.8L. More Info
Fits:
  • Chevrolet:
    • Volt
$13.10
$7.07
$13.10
$7.07
Spark Plug
Part Number: 12681660
Replaces: 12622561
Description: 3.6L, without bi-fuel. 3.0L & 3.6L. Wagon, 3.0, 3.6L. 3.6L, without twin-turbo. 3.6L, 2nd design. More Info
Fits:
  • Buick:
    • Enclave,
    • LaCrosse
  • Cadillac:
    • ATS,
    • CTS,
    • SRX,
    • STS,
    • XTS
  • Chevrolet:
    • Camaro,
    • Caprice,
    • Captiva Sport,
    • Colorado,
    • Equinox,
    • Impala,
    • Impala Limited,
    • Malibu,
    • Traverse
  • GMC:
    • Acadia,
    • Acadia Limited,
    • Canyon,
    • Terrain
  • Saturn:
    • Aura,
    • Outlook,
    • Vue
  • 18 more
$13.10
$7.07
$13.10
$7.07
Spark Plug
Part Number: 12688094
Other Names: F (S)Spark Plug More Names
Description: 2.7L turbo. 1.3L turbo. More Info
Fits:
  • Buick:
    • Encore GX
  • Cadillac:
    • CT4
  • Chevrolet:
    • Silverado 1500,
    • Trailblazer
  • GMC:
    • Sierra 1500
$14.74
$7.96
$14.74
$7.96
Spark Plug
Part Number: 19158037
Fits:
  • Buick:
    • Skylark
  • Chevrolet:
    • Cavalier,
    • Malibu
  • Oldsmobile:
    • Achieva,
    • Alero
  • Pontiac:
    • Grand Am,
    • Sunfire
  • 2 more
$11.02
$5.95
$11.02
$5.95
Spark Plug
Part Number: 21025103
Other Names: F (S)Spark Plug More Names
Fits:
  • Saturn:
    • SC,
    • SC1,
    • SC2,
    • SL,
    • SL1,
    • SL2,
    • SW1,
    • SW2
  • 3 more
$4.37
$2.37
$4.37
$2.37
Spark Plug
Part Number: 9195166
Description: Vendor:bosch. Vendor #flr9lte. More Info
Fits:
  • Cadillac:
    • Catera
  • Saturn:
    • L300,
    • LS2,
    • LW2,
    • LW300
$11.06
$5.97
$11.06
$5.97
Spark Plug
Part Number: 55564748
Description: 2.8L. More Info
Fits:
  • Cadillac:
    • SRX
$20.80
$11.23
$20.80
$11.23
Spark Plug
Part Number: 5613878
Fits:
  • Pontiac:
    • LeMans,
    • Sunbird
$3.22
$1.74
$3.22
$1.74
Spark Plug
Part Number: 5613932
Fits:
  • Pontiac:
    • LeMans,
    • Sunbird
$2.90
$1.57
$2.90
$1.57
Spark Plug
Part Number: 19185438
Description: 1.8L. More Info
Fits:
  • Pontiac:
    • Vibe
$13.10
$7.07
$13.10
$7.07
Spark Plug
Part Number: 19208523
Description: Police. Taxi. Vendor:acdelco. Vendor #CR43TS. More Info
Fits:
  • Cadillac:
    • Fleetwood
  • Chevrolet:
    • Caprice
$11.02
$5.95
$11.02
$5.95
Spark Plug
Part Number: 19238463
Description: Rapid Fire. More Info
Fits:
  • Chevrolet:
    • Astro,
    • Express 2500
  • GMC:
    • Sonoma
  • Oldsmobile:
    • Achieva
$6.14
$3.32
$6.14
$3.32
Spark Plug
Part Number: 12681665
Positions: Left, Right
Other Names: More Names
Replaces: 19256067
Description: Platinum. 4.8, 5.3, 6.0 & 6.2L. 5.3, 6.0L. 5.3L. Vendor:acdelco. Vendor #41-993. 4.3L, 2008-2014. 5.7L. 4.3L, 2003-2007. More Info
$13.10
$7.07
$13.10
$7.07
Spark Plug
Part Number: 19300872
Positions: Left, Right
Replaces: 12597464
Description: Platinum. Vendor:acdelco. Vendor #41-990. 3.6L, 2nd design. 2.8 & 3.6L. 3.0 & 3.6L. More Info
Fits:
  • Buick:
    • Enclave,
    • LaCrosse,
    • Rendezvous
  • Cadillac:
    • CTS,
    • SRX,
    • STS
  • Chevrolet:
    • Equinox,
    • Malibu,
    • Traverse
  • GMC:
    • Acadia
  • Pontiac:
    • G6,
    • G8,
    • Torrent
  • Saturn:
    • Aura,
    • Outlook,
    • Vue
  • 11 more
$11.02
$5.95
$11.02
$5.95
Spark Plug
Part Number: 19300875
Replaces: 19244463, 19244468
Description: Platinum. More Info
Fits:
  • Buick:
    • Regal
  • Cadillac:
    • 60 Special,
    • DeVille,
    • Eldorado,
    • Fleetwood,
    • Seville
  • 1 more
$11.02
$5.95
$11.02
$5.95
Spark Plug
Part Number: 19354421
Other Names: More Names
Replaces: 19157987, 19301658
$3.22
$1.74
$3.22
$1.74
Spark Plug
Part Number: 19301808
Description: Platinum. Vendor:acdelco. Vendor #41-906. More Info
Fits:
  • Buick:
    • Commercial Chassis,
    • Roadmaster
  • Cadillac:
    • Fleetwood
  • Chevrolet:
    • Camaro,
    • Caprice,
    • Corvette,
    • Impala
  • Pontiac:
    • Firebird
  • 3 more
$11.02
$5.95
$11.02
$5.95
Spark Plug
Part Number: 19301814
Positions: Left, Right
Replaces: 12565996
Description: 2.8 & 3.6L. 3.6L, 1st design. More Info
Fits:
  • Buick:
    • LaCrosse,
    • Rendezvous
  • Cadillac:
    • CTS,
    • SRX,
    • STS
$13.10
$7.07
$13.10
$7.07
Spark Plug
Part Number: 19308031
Description: 2.4L. Rapid Fire. Vendor:acdelco. Vendor #8. More Info
Fits:
  • Chevrolet:
    • Corvette
  • Pontiac:
    • Grand Am
$6.38
$3.45
$6.38
$3.45
Spark Plug
Part Number: 19308034
Replaces: 19250994, 19308039
Description: Platinum. More Info
Fits:
  • Chevrolet:
    • Tracker
$11.02
$5.95
$11.02
$5.95
Spark Plug
Part Number: 19308035
Description: Platinum. Vendor:acdelco. Vendor #41-803. More Info
Fits:
  • Chevrolet:
    • Camaro,
    • Express 1500,
    • Express 2500
  • GMC:
    • Savana 1500,
    • Savana 2500
$11.02
$5.95
$11.02
$5.95
Spark Plug
Part Number: 19354417
Fits:
  • Buick:
    • Century,
    • LeSabre,
    • Park Avenue,
    • Regal,
    • Riviera,
    • Skylark
  • Chevrolet:
    • Lumina APV
  • Oldsmobile:
    • 88,
    • 98,
    • Achieva,
    • Cutlass Ciera,
    • Cutlass Cruiser,
    • Silhouette,
    • Toronado
  • Pontiac:
    • Bonneville,
    • Grand Am,
    • Trans Sport
  • 12 more
$3.22
$1.74
$3.22
$1.74

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