Description: Genuine GM Iridium Spark Plug, part number 12680074. This GM OEM iridium spark plug ignites the air-fuel mixture in the combustion chamber, delivering a strong, consistent spark. Made by General Motors to original equipment standards for correct fit, finish and durability—no guesswork with aftermarket parts. Verify fitment using your VIN or GM part number 12680074 before ordering. Shipped from Gateway Buick GMC, an authorized GM dealer.

Description: Genuine GM Engine Camshaft Position Sensor, part number 12638266. This GM OEM engine camshaft position sensor reads the position of the camshaft and reports it to the engine computer, which uses the signal to time fuel injection and ignition. Made by General Motors to original equipment standards for correct fit, finish and durability—no guesswork with aftermarket parts. Verify fitment using your VIN or GM part number 12638266 before ordering. Shipped from Gateway Buick GMC, an authorized GM dealer.

Description: This part requires programming and/or special setup procedures. GM Service Information describes the procedures and special tools needed to ensure proper operation in the vehicle Dictates the operation of your vehicle's vital systems, which is critical to the performance of your vehicle Manufactured to GM OE specification for fit, form, and function