Description: GM Original Equipment Ignition Coil is a GM-recommended replacement for your vehicle's original component, and undergoes more stringent testing than aftermarket products.  It increases electrical system voltage to help ignite the air/fuel mixture as t ...

Description: This spark plug ignites the air-fuel mixture inside the engine?s combustion chamber. Spark plugs wear over time due to heat, electrical load, and carbon buildup, which can cause misfires, rough idle, reduced fuel efficiency, or hard starting. Replacing wor ...

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 Helps keep engine timing and fuel injection running in sync Helps provide proper alignment, positioning, and spacing for easy installation Synchronizes engine valves and pistons for excellent engine performance

Description: Helps keep engine timing and fuel injection running in sync Helps provide proper alignment, positioning, and spacing for easy installation Synchronizes engine valves and pistons for excellent engine performance