What brand of spark plugs does GM use?

[MacGabrielle]

GM stands for General Motors. There are many brands of spark plugs used in GM vehicles, depending on the specific model. Here is detailed information about automotive spark plugs: 1. Overview: Automotive spark plugs, commonly known as sparking plugs, function by discharging the high-voltage pulses sent through the ignition cables, creating an electric spark that ignites the air-fuel mixture in the cylinder. They can generally be categorized into standard spark plugs and insulator-protruding spark plugs. 2. Additional Information: The basic requirements for a high-performance engine include a stable, high-energy spark, a well-mixed air-fuel mixture, and a high compression ratio. The key component of a spark plug is the insulator. The insulator must possess excellent mechanical properties, high voltage resistance, the ability to withstand high-temperature shocks, and resistance to chemical corrosion. Most standard spark plugs are made of alumina-based ceramics.

[LeoLee]

When it comes to spark plug brands for GM vehicles, the one I'm most familiar with is ACDelco, since General Motors produces it themselves, so many original vehicles use it. For example, when I usually work on cars, I see Cadillac or Chevrolet engines almost always marked with the ACDelco logo. But it's not absolute—some older or specific models might use NGK or Denso, depending on the engine type, like four-cylinders often using ACDelco, while V8s might come with other brands. Confirming is easy—just check the owner's manual in the spark plug section, where the recommended model is listed. Spark plugs also have a long lifespan; with good maintenance, they can last up to 60,000 miles. Regular checks can prevent shaking or fuel consumption issues, keeping the car running smoothly. When replacing, it's best to buy original OEM parts to avoid any problems.

[Mike]

Having driven GM vehicles for most of my life, I must say ACDelco spark plugs are most commonly used in General Motors models. Like my pickup truck came with them originally - it's a pretty worry-free brand. But it really depends on the vehicle's age. Years ago when I replaced a Buick, I used Champion spark plugs which worked fine too. Always understand your engine's requirements before choosing a brand - don't just buy randomly, otherwise you might face starting issues or unstable idling. Normally, spark plugs should be replaced every 40,000-80,000 miles. The material (copper or platinum) affects performance - ACDelco ones are durable and you'll notice clear power improvement after replacement. Pay attention to your engine sounds while driving - if you hear anything unusual, get it checked immediately to avoid more expensive repairs later.

[LaLeonardo]

GM vehicles generally use ACDelco spark plugs, which are the most common OEM choice. When replacing, simply refer to the manual for the correct model to avoid mismatches. Some models like the Chevrolet Cruze may use NGK, but ACDelco is the most prevalent. In terms of materials, copper-core plugs are cheaper but have a shorter lifespan, while platinum ones are more durable. Using the right spark plugs can improve fuel efficiency and reduce emissions. Remember to regularly clean the spark plug area during maintenance to extend their service life.

[LaCora]

I'm passionate about modifying GM vehicles. The original spark plugs are mostly ACDelco, reliable but ordinary. When modifying, I switch to high-performance ones like Iridium NGK, with a heat range that better matches for improved acceleration. Different engines require different brands; for example, small-displacement cars are fine with ACDelco, while SUVs or sports cars benefit more from NGK upgrades. Spark plug selection affects ignition efficiency—choosing the right ones can reduce fuel consumption by about 10%. Don't forget to regularly check electrode wear and replace them every 30,000 miles for safety.